METHOD FOR IN-SITU PREPARATION OF POLYBENZIMIDAZOLE-BASED ELECTROLYTE MEMBRANE AND POLYBENZIMIDAZOLE-BASED ELECTROLYTE MEMBRANE PREPARED THEREBY

Disclosed is a method for in-situ preparation of a polybenzimidazole-based electrolyte membrane, including: polymerizing a polybenzimidazole polymer in a solution; casting a solution containing the polymerized polymer onto a substrate and drying the solution in air to form a membrane; washing the dried membrane with water or alcohol; and allowing water or alcohol to evaporate from the membrane containing water or alcohol, while maintaining the shape of the membrane. The method for in-situ preparation of a polybenzimidazole-based electrolyte membrane allows easy preparation of a polybenzimidazole-based electrolyte membrane having a desired area without any complicated processes, and thus contributes to simplification of an overall process for fabricating a fuel cell. 1. A method for in-situ preparation of a polybenzimidazole-based electrolyte membrane , comprising:polymerizing a polybenzimidazole polymer in a solution;casting a solution containing the polymerized polymer onto a substrate and drying the solution in air to form a membrane;washing the dried membrane with water or alcohol; andallowing water or alcohol to evaporate from the membrane containing water or alcohol, while maintaining the shape of the membrane.2. The method for in-situ preparation of a polybenzimidazole-based electrolyte membrane according to claim 1 , wherein the membrane is fixed at the end portions thereof with a plurality of tongs to maintain the shape of the membrane.3. The method for in-situ preparation of a polybenzimidazole-based electrolyte membrane according to claim 2 , wherein the end portions of the membrane are fixed at four directions thereof.5. A polybenzimidazole-based electrolyte membrane prepared by the method as defined in .6. A polybenzimidazole-based electrolyte membrane prepared by the method as defined in .7. A polybenzimidazole-based electrolyte membrane prepared by the method as defined in .8. A polybenzimidazole-based electrolyte membrane prepared by the method as ...

METHODS OF PREPARING ELECTROCATALYSTS FOR FUEL CELLS IN CORE-SHELL STRUCTURE AND ELECTROCATALYSTS

Provided are a method of preparing an electrocatalyst for fuel cells in a core-shell structure, an electrocatalyst for fuel cells having a core-shell structure, and a fuel cell including the electrocatalyst for fuel cells. The method may be useful in forming a core and a shell layer without performing a subsequent process such as chemical treatment or heat treatment and forming a core support in which core particles having a nanosize diameter are homogeneously supported, followed by selectively forming shell layers on surfaces of the core particles in the support. Also, the electrocatalyst for fuel cells has a high catalyst-supporting amount and excellent catalyst activity and electrochemical property. 1. A method of preparing an electrocatalyst for fuel cells , the method comprising:preparing a core support in which core particles having a nanosize diameter are supported through out a support by a reaction of the support and metal precursors for forming core particles in an ether-based solvent; andselectively forming shell layers on surfaces of the core particles by a reaction of the core support and metal precursors for forming shell layers in the presence of an ester-based reducing agent.2. The method according to claim 1 , wherein an amine-based reducing agent is further used in the preparation of the core support.3. The method according to claim 1 , wherein the metal precursors for forming core particles are metal compounds comprising at least one selected from the group consisting of palladium claim 1 , copper claim 1 , gold and iridium.4. The method according to claim 1 , wherein the metal precursors for forming shell layers comprise at least one selected from the group consisting of platinum claim 1 , iridium and gold.5. The method according to claim 1 , wherein the ether-based solvent is benzyl ether.6. The method according to claim 1 , wherein the ester-based reducing agent is Hanztsch ester or a derivative thereof.7. The method according to claim 3 , ...

Molten carbonate fuel cells including reinforced lithium aluminate matrix, method for preparing the same, and method for supplying lithium source

Disclosed is a molten carbonate fuel cell comprising a reinforced lithium aluminate matrix, a cathode, an anode, a cathode frame channel and an anode frame channel, wherein at least one of the cathode frame channel and the anode frame channel is filled with a lithium source. Disclosed also are a method for producing the same, and a method for supplying a lithium source. The molten carbonate fuel cell in which a lithium source is supplied to an electrode has high mechanical strength and maintains stability of electrolyte to allow long-term operation.

CATHODE FOR MOLTEN CARBONATE FUEL CELL AND MANUFACTURING METHOD OF THE SAME

Provided is a cathode for molten carbonate fuel cells, including a porous nickel-based electrode containing nickel particles, and metal particles coated on the electrode, wherein at least a part of the metal particles are attached to the surface of the nickel particles. A method for preparing the same is also provided. The cathode for molten carbonate fuel cells accelerates the cathodic oxygen reduction and reduces polarization resistance occurring at the cathode, thereby providing a fuel cell with improved performance even at low temperature. Additionally, it is possible to improve the service life of a molten carbonate fuel cell due to such low operation temperature. 1. A cathode for molten carbonate fuel cells , comprising a porous nickel-based electrode containing nickel particles , and metal particles coated on the electrode , wherein at least a part of the metal particles are attached to the surface of the nickel particles.2. The cathode for molten carbonate fuel cells according to claim 1 , wherein the metal particles include at least one selected from the group consisting of silver (Ag) claim 1 , gold (Au) claim 1 , copper (Cu) claim 1 , platinum (Pt) claim 1 , titanium (Ti) and cobalt (Co).3. The cathode for molten carbonate fuel cells according to claim 1 , wherein the metal particles are present in an amount of 0.05-30 parts by weight based on 100 parts by weight of the porous nickel-based electrode.4. The cathode for molten carbonate fuel cells according to claim 1 , wherein the metal particles have a diameter of 0.001 nm-2 μm.5. The cathode for molten carbonate fuel cells according to claim 1 , which has a porosity of 50-85%.6. The cathode for molten carbonate fuel cells according to claim 1 , wherein the pores in the cathode have a size of 4-15 μm.7. A method for manufacturing a cathode for molten carbonate fuel cells claim 1 , comprising:dispersing metal particles into a solvent to provide a coating solution; andapplying the coating solution of metal ...

ELECTROLYTE MEMBRANE FOR FUEL CELL INCLUDING BLEND OF POLYMERS WITH DIFFERENT DEGREES OF SULFONATION, AND MEMBRANE-ELECTRODE ASSEMBLY AND FUEL CELL INCLUDING THE SAME

Disclosed herein is an electrolyte membrane for a fuel cell. The electrolyte membrane includes a blend of polymers with different degrees of sulfonation. The electrolyte membrane can exhibit excellent effects such as improved long-term cell performance and good long-term dimensional stability while at the same time solving the problems of conventional hydrocarbon electrolyte membranes. Further disclosed are a membrane-electrode assembly and a fuel cell including the electrolyte membrane. 1. An electrolyte membrane for a fuel cell comprising a blend of two or more sulfonated polymers of the same kind or different kinds with different degrees of sulfonation.2. The electrolyte membrane according to claim 1 , wherein the two or more sulfonated polymers are each independently a sulfonated hydrocarbon polymer selected from poly(ether sulfone)s claim 1 , poly(thiosulfone)s claim 1 , poly(ether ether ketone)s claim 1 , polyimides claim 1 , polystyrenes claim 1 , polyphosphazenes claim 1 , and random or block copolymers of the aforementioned polymers.3. The electrolyte membrane according to claim 2 , wherein each of the two or more sulfonated polymers is prepared by sulfonation of a non-sulfonated or low-sulfonated polymer or by polymerization of one or more sulfonated monomers.4. The electrolyte membrane according to claim 3 , wherein the difference in average degree of sulfonation between the two or more sulfonated polymers is larger than the maximum of the standard deviations of the individual degrees of sulfonation of the two or more sulfonated polymers.5. The electrolyte membrane according to claim 4 , wherein the average degrees of sulfonation of the two or more sulfonated polymers are different from each other by at least 5 to 40%.6. The electrolyte membrane according to claim 5 , wherein each of the two or more sulfonated polymers is a block copolymer prepared by condensation of one or more monomers having a sulfonic acid group and one or more monomers having no ...

CORE-SHELL STRUCTURED ELECTROCATALYSTS FOR FUEL CELLS AND PRODUCTION METHOD THEREOF

Disclosed is a method for producing a core-shell structured electrocatalyst for a fuel cell. The method includes uniformly supporting nano-sized core particles on a support to obtain a core support, and selectively forming a shell layer only on the surface of the core particles of the core support. According to the method, the core and the shell layer can be formed without the need for a post-treatment process, such as chemical treatment and heat treatment. Further disclosed is a core-shell structured electrocatalyst for a fuel cell produced by the method. The core-shell structured electrocatalyst has a large amount of supported catalyst and exhibits superior catalytic activity and excellent electrochemical properties. Further disclosed is a fuel cell including the core-shell structured electrocatalyst. 1. A method for preparing core nanoparticles supported on a support for a core-shell structured electrocatalyst , comprising(a) reacting a support with a precursor of at least one core-forming metal in an ether-based solvent.2. The method according to claim 1 , wherein the reaction in step (a) is carried out at 80 to 120° C.3. The method according to claim 1 , wherein the core is composed of an alloy of Pd and Cu claim 1 , and step (a) is carried out at room temperature.4. The method according to claim 1 , wherein the ether-based solvent is selected from benzyl ether claim 1 , phenyl ether claim 1 , dimethoxytetraglycol claim 1 , furan-based aromatic ethers claim 1 , and mixtures of two or more thereof.5. A method for producing a core-shell structured electrocatalyst for a fuel cell claim 1 , comprising(a) reacting a support with a precursor of at least one core-forming metal in an ether-based solvent to obtain core nanoparticles supported on the support, and(b) reducing a precursor of at least one shell-forming metal using an ester-based reducing agent in a solution in which the core nanoparticles supported on the support are dipped or dispersed.7. The method ...

INTACT METHOD OF EVALUATING UNIT CELLS IN A FUEL CELL STACK AND A DEVICE USING THE SAME

Disclosed are a method and an apparatus for an intact evaluation of the unit cells in a fuel cell stack. Since the degradation of the unit cells can be detected intactly, i.e. without disassembly of the stack, the time required for the detection and analysis thereof can be greatly reduced. 2. The apparatus according to claim 1 , wherein Cand Iare obtained from at least two ΔV/Δtvalues and at least two Ivalues in a zone where Ihas a positive value.3. The apparatus according to claim 2 , wherein the apparatus for evaluating the degradation of unit cells in a fuel cell stack further comprises: a fuel supplier for supplying fuel to an anode of the fuel cell; and an oxidant supplier for supplying oxidant to a cathode of the fuel cell.4. The apparatus according to claim 3 , wherein the number of the voltage measuring device is from 1 to n.5. The apparatus according to claim 4 , wherein the number of the voltage measuring device is from 1 to (n−1) claim 4 , and the voltage measuring device further comprises a connection terminal switching means allowing at least one of the voltage measuring device to measure voltage multiple times by switching a connection terminal from a measured separator to a separator to be measured.6. The apparatus according to claim 5 , wherein the voltage measuring device further comprises a sequence input means allowing to input the sequence of voltage measurement of the separators.7. A degradation detecting system for a vehicle comprising the apparatus for evaluating the degradation according to .87. The degradation detecting system for a vehicle according to claim claim 1 , wherein the degradation detecting system for a vehicle further comprises a warning display means warning when at least part or all of the measured physical property values are below predetermined values.9. The degradation detecting system for a vehicle according to claim 8 , wherein the degradation detecting system for a vehicle further comprises a means stopping current flow ...

Nlk as a marker for diagnosis of liver cancer and as a therapeutic agent thereof

A novel marker for diagnosis of liver cancer and use thereof are provided. To be specific, a marker for diagnosis of liver cancer using over-expression of NLK (neuro-like kinase) in liver cancer cell is provided, along with a composition for diagnosis of liver cancer, a kit, a microarray, and a method for diagnosing liver cancer using the marker. Additionally, a method for screening a substance to prevent or treat liver cancer by decreasing expression of the marker gene or protein, and a composition for preventing or treating liver cancer including such substance are provided. Accordingly, the NLK gene can be efficiently used as a target for diagnosis and treatment of liver cancer.

CERIA-BASED COMPOSITION, CERIA-BASED COMPOSITE ELECTROLYTE POWDER, METHOD FOR SINTERING THE SAME AND SINTERED BODY MADE THEREOF

Provided are a ceria-based composition including ceria or metal-doped ceria, lithium salt, and optionally, bismuth oxide, ceria-based composite electrolyte powder, and a sintering method and sintered body using the same. Particularly, the lithium salt is present in an amount more than wt % and equal to or less than wt %, and bismuth oxide is present in an amount more than wt % and equal to or less than 10 wt %. It is possible to reduce sintering temperature by adding a low-melting point and/or volatile compound to a ceria-based material. In this manner, it is possible to ensure a high composite sintering density, for example, of 95% or more even at a temperature, for example, of 1000° C. or lower, which is significantly lower than the conventional sintering temperature of 1500° C. in the case of a ceria-based material alone. 1. A ceria-based composition , comprising: ceria or metal-doped ceria; and a lithium salt , wherein the lithium salt is present in an amount more than 0 wt % and less than 50 wt % based on the total weight of the composition.2. The ceria-based composition according to claim 1 , wherein the lithium salt is lithium carbonate claim 1 , lithium hydroxide or lithium nitrate3. The ceria-based composition according to claim 2 , wherein the lithium salt is lithium carbonate.4. The ceria-based composition according to claim 3 , wherein lithium carbonate is present in an amount more than 0 wt % and equal to or less than 5 wt % based on the total weight of the ceria-based composition.5. The ceria-based composition according to claim 4 , wherein lithium carbonate is present in an amount more than 0 wt % and equal to or less than 1 wt % based on the total weight of the ceria-based composition.60. The ceria-based composition according to claim 5 , wherein lithium carbonate is present in an amount of .5 wt % or 1 wt % based on the total weight of the ceria-based composition.7. The ceria-based composition according to claim 1 , wherein the metal in the metal- ...

HYDROGEN PUMP SYSTEM OPERABLE WITHOUT EXTERNAL ELECTRIC POWER SUPPLY

Disclosed is a hydrogen pump system operable without external electric power supply. The hydrogen pump system is capable of separating or purifying hydrogen without an external electric power supply. 1. A hydrogen pump system operable without external electric power supply , comprising (i) m hydrogen pumps comprising (a) a first hydrogen pump , . . . , and (a) an m-th hydrogen pump and (ii) n fuel cells comprising (b) a first fuel cell , . . . , and (b) an n-th fuel cell ,wherein{'sub': 1', '1', '1', '1', '1', 'm', 'm', 'm', 'm', 'm, '(a) the first hydrogen pump comprises (a-1) a first hydrogen pump membrane electrode assembly, (a-2) a first hydrogen pump hydrogen supplier disposed at one side of the first hydrogen pump membrane electrode assembly, (a-3) a first hydrogen pump residual gas discharger, and (a-4) a first hydrogen pump hydrogen discharger disposed at the other side of the first hydrogen pump membrane electrode assembly; . . . ; and (a) the m-th hydrogen pump comprises (a-1) an m-th hydrogen pump membrane electrode assembly, (a-2) an m-th hydrogen pump hydrogen supplier disposed at one side of the m-th hydrogen pump membrane electrode assembly, (a-3) an m-th hydrogen pump residual gas discharger, and (a-4) an m-th hydrogen pump hydrogen discharger disposed at the other side of the m-th hydrogen pump membrane electrode assembly;'}{'sub': 1', '1', '1', '1', '1', 'n', 'n', 'n', 'n', 'n, '(b) the first fuel cell comprises (b-1) a first fuel cell membrane electrode assembly, (b-2) a first fuel cell hydrogen supplier disposed at one side of the first fuel cell membrane electrode assembly, (b-3) a first fuel cell fuel gas supplier disposed at the other side of the first fuel cell membrane electrode assembly, and (b-4) a first fuel cell water discharger; . . . ; and (b) the n-th fuel cell comprises (b-1) an n-th fuel cell membrane electrode assembly, (b-2) an n-th fuel cell hydrogen supplier disposed at one side of the n-th fuel cell membrane electrode assembly, ...

Poly(benzimidazole-co-benzoxazole) and method for preparing the same

Provided is poly(benzimidazole-co-benzoxazole) having polybenzimidazole to which benzoxazole units are introduced, as a polymer electrolyte material. The polymer electrolyte material has both high proton conductivity and excellent mechanical properties even when it is obtained by in-situ phosphoric acid doping. The polymer electrolyte material may substitute for the conventional phosphoric acid-doped polybenzimidazole in a polymer electrolyte membrane fuel cell, particularly in a high-temperature polymer electrolyte membrane fuel cell.

Perfluorinated sulfonic acid polymer membrane having porous surface layer and method for preparing the same

Provided are a perfluorinated sulfonic acid polymer membrane having a porous surface layer, which includes a surface layer and a bottom layer present at the bottom of the surface layer, wherein the surface layer is a porous layer, and the bottom layer is non-porous dense layer, and a method for preparing the same through a solvent evaporation process.

Fluid pumping device, fuel cell device and fuel gas recirculation method using the same

Provided is a fluid pumping device, and more particularly, a fluid pumping device capable of being used in fuel cell systems and the like and spatially separating a fluid temporary storage unit through which a fluid at high temperature passes from a pump, thereby maintaining the durability of the pump, facilitating replacement and management, and achieving a reduction in weight.

CERIA-BASED COMPOSITION INCLUDING BISMUTH OXIDE, CERIA-BASED COMPOSITE ELECTROLYTE POWDER INCLUDING BISMUTH OXIDE, METHOD FOR SINTERING THE SAME AND SINTERED BODY MADE THEREOF

Provided are a ceria-based composition having an undoped or metal-doped ceria and an undoped or metal-doped bismuth oxide, wherein the undoped or metal-doped bismuth oxide is present in an amount equal to or more than about 10 wt % and less than about 50 wt % based on the total weight of the ceria-based composition, and at least one selected from the ceria and the bismuth oxide is metal-doped. The ceria-based composition may ensure high sintering density even at a temperature significantly lower than the known sintering temperature of about 1400° C., i.e., for example at a temperature of about 1000° C. or lower, and increase ion conductivity as well. 1. A ceria-based composition consisting essentially of an undoped ceria or a metal-doped ceria; and an undoped bismuth oxide or a metal-doped bismuth oxide ,wherein the ceria-based composition comprises at least one selected from the group consisting of the metal-doped ceria and the metal-doped bismuth oxide; andthe metal doped ceria and/or the metal-doped bismuth oxide comprises a doping metal at a concentration between about 10 wt % and about 30 wt % with respect to the metal-doped ceria and/or the metal-doped bismuth oxide; andthe undoped bismuth oxide or the metal-doped bismuth oxide is present in an amount equal to or more than about 10 wt % and less than about 50 wt % based on the total weight of the ceria-based composition, andthe doping metal is at least one selected from the group consisting of samarium, gadolinium, lanthanum, zirconium, yttrium, ytterbium, erbium, praseodymium, neodymium, and combinations thereof.2. The ceria-based composition according to claim 1 , wherein the bismuth oxide or the metal-doped bismuth oxide is present in an amount of about 10 wt % to about 30 wt % based on the total weight of the ceria-based composition.3. The ceria-based composition according to claim 1 , wherein the bismuth oxide or the metal-doped bismuth oxide is present in an amount more than about 15 wt % and equal to or ...

CARBON SUPPORT FOR FUEL CELL CATALYST AND PREPARATION METHOD THEREOF

Disclosed is a carbon support for a fuel cell catalyst that supports a metal. The carbon support includes a conductive carbon support and nitrogen atoms doped into the conductive carbon support. Also disclosed is a method for preparing the carbon support. Also disclosed is a catalyst including the carbon support. The catalyst has greatly improved degradation resistance compared to conventional catalysts for fuel cells. In addition, the catalyst is not substantially degraded even when applied to a single cell. 1. A method for preparing a carbon support for a fuel cell catalyst , the method comprising:(A) mixing a conductive carbon support with a nitrogen-containing organic material;(B) primarily annealing the mixture; and(C) secondarily annealing the primarily annealed mixture at a temperature higher than the primary annealing temperature under a nitrogen atmosphere.2. The method according to claim 1 , wherein claim 1 , in step (A) claim 1 , the conductive carbon support is mixed with the nitrogen-containing organic material in a weight ratio of 1:0.5-3.3. The method according to claim 1 , wherein claim 1 , in step (A) claim 1 , the conductive carbon support and the nitrogen-containing organic material are dissolved in at least one solvent selected from the group consisting of distilled water and methanol claim 1 , ethanol claim 1 , and ethylene glycol as organic solvents.4. The method according to claim 1 , wherein claim 1 , in step (A) claim 1 , the conductive carbon support is selected from the group consisting of carbon black claim 1 , acetylene black claim 1 , carbon nanotubes (CNTs) claim 1 , graphite claim 1 , graphene claim 1 , graphite nanofibers (GNFs) claim 1 , fullerenes claim 1 , and combinations thereof.5. The method according to claim 1 , wherein claim 1 , in step (A) claim 1 , the nitrogen-containing organic material is selected from the group consisting of dicyandiamide claim 1 , pyrrole claim 1 , aniline claim 1 , phthalocyanine claim 1 , porphyrin ...

CORE-SHELL STRUCTURED ELECTROCATALYSTS FOR FUEL CELLS AND PRODUCTION METHOD THEREOF

Disclosed is a method for producing a core-shell structured electrocatalyst for a fuel cell. The method includes uniformly supporting nano-sized core particles on a support to obtain a core support, and selectively forming a shell layer only on the surface of the core particles of the core support. According to the method, the core and the shell layer can be formed without the need for a post-treatment process, such as chemical treatment and heat treatment. Further disclosed is a core-shell structured electrocatalyst for a fuel cell produced by the method. The core-shell structured electrocatalyst has a large amount of supported catalyst and exhibits superior catalytic activity and excellent electrochemical properties. Further disclosed is a fuel cell including the core-shell structured electrocatalyst. 1. A method for preparing core nanoparticles supported on a support for a core-shell structured electrocatalyst , comprising(a) reacting a support with a precursor of at least one core-forming metal in an ether-based solvent.2. The method according to claim 1 , wherein the reaction in step (a) is carried out at 80 to 120° C.3. The method according to claim 1 , wherein the core is composed of an alloy of Pd and Cu claim 1 , and step (a) is carried out at room temperature.4. The method according claim 1 , wherein the ether-based solvent is selected from benzyl ether claim 1 , phenyl ether claim 1 , dimethoxytetraglycol claim 1 , furan-based aromatic ethers claim 1 , and mixtures of two or more thereof.5. A method for producing a core-shell structured electrocatalyst for a fuel cell claim 1 , comprising(a) reacting a support with a precursor of at least one core-forming metal in an ether-based solvent to obtain core nanoparticles supported on the support, and(b) reducing a precursor of at least one shell-forming metal using an ester-based reducing agent in a solution in which the core nanoparticles supported on the support are dipped or dispersed.7. The method according ...

HIGH PURITY HYDROGEN PRODUCTION DEVICE AND HIGH PURITY HYDROGEN PRODUCTION METHOD

A hydrogen production device is provided. The device comprises: a dry reforming reaction unit for directly reacting methane and carbon dioxide in biogas to produce a synthesis gas containing hydrogen; and a gas shift unit for reacting carbon monoxide in the synthesis gas produced in the dry reforming reaction unit with water vapor to produce carbon dioxide and hydrogen, and for capturing the produced carbon dioxide. 1. A hydrogen production device comprising: a dry reforming reaction unit for directly reacting methane and carbon dioxide in biogas to produce a synthesis gas containing hydrogen; anda gas shift unit for reacting carbon monoxide in the synthesis gas produced in the dry reforming reaction unit with water vapor to produce carbon dioxide and hydrogen, and for capturing the produced carbon dioxide.2. The hydrogen production device according to claim 1 ,wherein the carbon dioxide captured in the gas shift unit is supplied to the dry reforming reaction unit to be recycled in the reaction with methane in biogas.3. The hydrogen production device according to claim 1 ,wherein the gas shift unit comprises a hydrogen production catalyst and an adsorbent for capturing carbon dioxide, andwherein the weight ratio of the hydrogen production catalyst and the adsorbent for capturing carbon dioxide is 1:9 to 9:1.4. The hydrogen production device according to claim 1 ,wherein the hydrogen production catalyst comprises at least one transition metal selected from the group consisting of Cu, Ni, and Fe.5. The hydrogen production device according to claim 1 ,wherein the adsorbent for capturing carbon dioxide comprises an alkali metal double salt-based adsorbent or a hydrotalcite-based adsorbent.6. The hydrogen production device according to claim 5 ,wherein the alkali metal double salt-based adsorbent is an adsorbent prepared by coprecipitation or impregnation process of an alkaline earth metal carbonate, and [{'br': None, 'i': 'x', 'sub': '2', '(1−)M(OH)\u2003\u2003Formula 1 ...

Method for supplying molten carbonate fuel cell with electrolyte and molten carbonate fuel cell using the same

Disclosed are a method for supplying molten carbonate fuel cell with electrolyte and a molten carbonate fuel cell using the same, wherein a molten carbonate electrolyte is generated from a molten carbonate electrolyte precursor compound in a molten carbonate fuel cell and is supplied to the molten carbonate fuel cell.

Pure isophthalaldehyde bisulfite adduct and novel preparation method thereof

Disclosed are a method for preparing a pure isophthalaldehyde bisulfite adduct free from impurities through a specific purification process, and use thereof as a starting material for polymerizing polybenzimidazole under a mild condition. According to the present disclosure, it is possible to obtain a pure isophthalaldehyde bisulfite adduct free from impurities, such as unreacted materials or byproducts. In addition, it is possible to accomplish industrial mass production of a high-molecular weight polybenzimidazole by using the adduct as a starting material for polymerizing polybenzimidazole under a mild condition in an organic solvent.

ELECTRODE BINDER USING ALCOHOL BASED SOLVENT FOR POLYMER ELECTROLYTE MEMBRANE FUEL CELL AND METHOD FOR PREPARING THE SAME

Disclosed is an alcohol mixture typed hydrocarbon based electrode binder for a polymer electrolyte membrane fuel cell. The binder may be directly applied to a hydrocarbon based electrolyte membrane of the same kind, and may exhibit a superior fuel cell performance over conventional hydrocarbon polymer binders using an organic solvent. 1. An electrode binder composition for a polymer electrolyte membrane fuel cell , comprising an alcohol based solvent comprising water and an alcohol; and a hydrocarbon based polymer binder.2. The electrode binder composition for a polymer electrolyte membrane fuel cell according to claim 1 ,wherein the alcohol has a boiling point of less than 150° C.3. The electrode binder composition for a polymer electrolyte membrane fuel cell according to claim 2 ,wherein the alcohol is one or more selected from the group consisting of 1-propanol, isopropanol, and ethanol.4. The electrode binder composition for a polymer electrolyte membrane fuel cell according to claim 1 ,wherein the hydrocarbon polymer binder comprises a partially fluorinated hydrocarbon based polymer binder.5. The electrode binder composition for a polymer electrolyte membrane fuel cell according to claim 1 ,wherein the hydrocarbon polymer binder is a polymer selected from the group consisting of sulfonated polyarylene ether sulfone, sulfonated polyimide, polysulfone, polyether sulfone, polyarylene ether ketone, polyether ether ketone, polybenzimidazole, polybenzoxazole, polybenzothiazole, and polyphosphazene, a copolymer of the polymer, or a mixture of two or more of the polymer.6. The electrode binder composition for a polymer electrolyte membrane fuel cell according to claim 1 ,wherein the alcohol based solvent contains, by weight, 5 to 95% of an alcohol and 95 to 5% of water.7. The electrode binder composition for a polymer electrolyte membrane fuel cell according to claim 1 ,wherein the mixture of an alcohol based solvent and a hydrocarbon based polymer binder contains 1 to ...

CATALYST FOR DEHYDROGENATION REACTION OF FORMIC ACID AND METHOD FOR PREPARING THE SAME

Provided is a method for preparing a catalyst for a dehydrogenation reaction of formic acid, the method including: preparing a nitrogen-doped carbon support; forming a mixed solution including a first aqueous metal precursor solution which includes palladium (Pd) and a second aqueous metal precursor solution which includes nickel (Ni); and forming a catalyst for a dehydrogenation reaction of formic acid by stirring the nitrogen-doped carbon support with the mixed solution, and then immobilizing alloy particles of Pd and Ni on the nitrogen-doped carbon support. 1. A method for preparing a catalyst for a dehydrogenation reaction of formic acid , the method comprising:preparing a nitrogen-doped carbon support;forming a mixed solution comprising a first aqueous metal precursor solution which comprises palladium (Pd) and a second aqueous metal precursor solution which comprises nickel (Ni); andforming a catalyst for a dehydrogenation reaction of formic acid by stirring the nitrogen-doped carbon support with the mixed solution, and then immobilizing alloy particles of Pd and Ni on the nitrogen-doped carbon support.2. The method according to claim 1 , wherein the preparing of the nitrogen-doped carbon support comprises:dissolving and stirring dicyandiamide and carbon black in a solvent;obtaining carbon black onto which a nitrogen precursor is adsorbed by evaporating the solvent at 50° C. to 150° C.; andpreparing a nitrogen-doped carbon support by subjecting the obtained carbon black onto which the nitrogen precursor is adsorbed to heat treatment in an inert atmosphere at 400° C. to 700° C.3. The method according to claim 2 , wherein the carbon black comprises at least one selected from the group comprising ketjen-black claim 2 , vulcan claim 2 , activated carbon claim 2 , carbon nanotubes claim 2 , carbon fibers claim 2 , fullerene and graphene.4. The method according to claim 1 , wherein a molar ratio of Pd ions to Ni ions in the mixed solution is 1:0.33 to 1:3.5. The ...

CATALYST FOR DEHYDROGENATION REACTION OF FORMATE AND HYDROGENATION REACTION OF BICARBONATE AND PREPARATION METHOD THEREOF

Provided is a method for preparing a catalyst for a dehydrogenation reaction of formate and a hydrogenation reaction of bicarbonate, the method including: adding a silica colloid to a polymerization step of polymerizing aniline and reacting the resulting mixture to form a poly(silica-aniline) composite; carbonizing the corresponding poly(silica-aniline) composite under an atmosphere of an inert gas; removing silica particles from the corresponding poly(silica-aniline) composite to form a polyaniline-based porous carbon support; and fixing palladium particles on the corresponding polyaniline-based porous carbon support to prepare the catalyst. 1. A method for preparing a catalyst for a dehydrogenation reaction of formate and a hydrogenation reaction of bicarbonate , the method comprising:adding a silica colloid to a polymerization step of polymerizing aniline to form polyaniline and reacting the resulting mixture to form a poly(silica-aniline) composite;carbonizing the poly(silica-aniline) composite under an atmosphere of an inert gas;removing silica particles from the poly(silica-aniline) composite to form a polyaniline-based porous carbon support; andfixing palladium particles on the polyaniline-based porous carbon support to prepare the catalyst.21. The method according to , wherein the catalyst is represented by the following Chemical Formula 1:{'br': None, 'Pd/PDMC-T-X\u2003\u2003[Chemical Formula 1]'}(In Chemical Formula 1, Pd and PDMC mean palladium and a polyaniline-based porous carbon support, respectively, T means a temperature in the carbonization step, and X is a weight (g) of the silica colloid added per 0.02 mmol of aniline in the polymerization step of polyaniline).32. The method according to , wherein T in Chemical Formula 1 is within a range of 500 to 1 ,000° C.43. The method according to , wherein T in Chemical Formula 1 is within a range of 750 to 860° C.52. The method according to , wherein X in Chemical Formula 1 is within a range of 4 to 18 g.65 ...

CATALYST FOR ELECTROCHEMICAL AMMONIA SYNTHESIS AND METHOD FOR PRODUCING THE SAME

The present disclosure relates to a catalyst for electrochemical ammonia synthesis and a method for producing the same. The catalyst has an ammonia synthesis activity up to several times to several tens of times of the activity of the existing single metal or metal oxide catalysts. Thus, when using the catalyst, it is possible to provide a method for electrochemical ammonia synthesis having an improved ammonia production yield and rate. 1. A catalyst for electrochemical ammonia synthesis , comprising iron , copper and sulfur.2. The catalyst for electrochemical ammonia synthesis according to claim 1 , wherein the elemental content of iron is 0.1-10% based on the total elemental content of iron claim 1 , copper and sulfur.3. The catalyst for electrochemical ammonia synthesis according to claim 1 , wherein the elemental content ratio of copper to sulfur is 1:2-2:1.4. The catalyst for electrochemical ammonia synthesis according to claim 1 , which is supported in a carbon carrier in an amount of 20-65 wt % based on the weight of carbon.5. The catalyst for electrochemical ammonia synthesis according to claim 4 , wherein the carbon carrier is at least one selected from Ketjen black claim 4 , carbon black claim 4 , graphite claim 4 , carbon nanotubes claim 4 , carbon nanocages and carbon fibers.6. The catalyst for electrochemical ammonia synthesis according to claim 1 , which is coated on at least one electrode selected from carbon paper claim 1 , carbon cloth claim 1 , carbon felt and fluorine-doped tin oxide (FTO) conducting glass.7. The catalyst for electrochemical ammonia synthesis according to claim 6 , wherein the coating is carried out through any one method selected from spray coating claim 6 , screen printing and ink jet printing.8. The catalyst for electrochemical ammonia synthesis according to claim 6 , wherein the coating is carried out at an areal density of 0.1-10 mg/cm.9. An electrode for ammonia synthesis claim 1 , comprising the catalyst as defined in . ...

Liquid hydrogen storage material and method of storing hydrogen using the same

Provided is a liquid hydrogen storage material including 1,1′-biphenyl and 1,1′-methylenedibenzene, the liquid hydrogen storage material including the corresponding 1,1′-biphenyl and 1,1′-methylenedibenzene at a weight ratio of 1:1 to 1:2.5. The corresponding liquid hydrogen storage material has excellent hydrogen storage capacity value by including materials having high hydrogen storage capacity, and is supplied in a liquid state, and as a result, it is possible to minimize initial investment costs and the like required when the corresponding liquid hydrogen storage material is used as a hydrogen storage material in a variety of industries.

Composite polymer electrolyte membrane for fuel cell, and method of manufacturing the same

Provided is a composite polymer electrolyte membrane for a fuel cell, including: a porous fluorinated polymer support; and a perfluorinated sulfonic acid polymer resin membrane which fills the inside of pores of the porous perfluorinated polymer support and covers an external surface of the porous fluorinated polymer support.

CATALYST FOR OXYGEN REDUCTION REACTION COMPRISING IRIDIUM-BASED ALLOY

Provided is a catalyst for an oxygen reduction reaction, including an alloy in which two metals are mixed, in which the corresponding alloy is an alloy of iridium (Ir); and silicon (Si), phosphorus (P), germanium (Ge), or arsenic (As). The corresponding catalyst for the oxygen reduction reaction may have excellent price competitiveness while exhibiting a catalytic activity which is equal to or similar to that of an existing Pt catalyst. Accordingly, when the catalyst is used, the amount of platinum catalyst having low price competitiveness may be reduced, so that a production unit cost of a system to which the corresponding catalyst is applied may be lowered. 1. A catalyst for an oxygen reduction reaction , comprising an alloy in which two metals are mixed ,wherein the alloy is an alloy of iridium (Ir); and silicon (Si), phosphorus (P), germanium (Ge), or arsenic (As).2. The catalyst according to claim 1 , wherein the alloy is represented by the following Chemical Formula 1.{'br': None, 'sub': 'x', 'IrM\u2003\u2003[Chemical Formula 1]'}(In Chemical Formula 1, 1 Подробнее

PROCESS OF PREPARING CARBON-SUPPORTED METAL CATALYST BY PHYSICAL DEPOSITION

The present disclosure relates to a method and an apparatus for preparing nanosized metal or alloy nanoparticles by depositing metal or alloy nanoparticles with superior size uniformity on the surface of a powder as a base material by vacuum deposition and then dissolving or melting the base material using a solvent or heat. The method solves the problems of the existing expensive multi-step synthesis method based on chemical reduction and allows effective synthesis of metal or alloy nanoparticles with very uniform size and metal or alloy catalyst nanoparticles supported on carbon at low cost. 1. A method for preparing an electrochemical catalyst , comprising:obtaining a water-soluble support with a metal catalyst or an alloy catalyst deposited by depositing a catalytic metal on a water-soluble support;obtaining a dispersion comprising the water-soluble support with a metal catalyst or an alloy catalyst deposited and a carbon support;obtaining a dispersion comprising a metal catalyst supported on the carbon support by stirring the dispersion at 20-90° C. for 1-24 hours;obtaining the metal catalyst supported on the carbon support in solid phase by washing and filtering the dispersion comprising the metal catalyst supported on the carbon support; anddrying and pulverizing the metal catalyst supported on the carbon support in solid phase.2. The method for preparing an electrochemical catalyst according to claim 1 , wherein the water-soluble support is selected from sugar powder comprising glucose claim 1 , sucrose and fructose claim 1 , water-soluble metal salt powder comprising sodium chloride claim 1 , potassium chloride and sodium bicarbonate claim 1 , water-soluble polymer powder comprising PVA and PVP claim 1 , or a combination thereof.3. The method for preparing an electrochemical catalyst according to claim 1 , wherein the water-soluble support is powder of 1-100 nm in diameter.4. The method for preparing an electrochemical catalyst according to claim 1 , ...

CARDO COPOLYBENZIMIDAZOLES, GAS SEPARATION MEMBRANES AND PREPARATION METHOD THEREOF

Provided are cardo copolybenzimidazoles, a gas separation membrane using the same and a method for preparing the same. More particularly, provided are cardo copolybenzimidazoles obtained by introducing cardo groups and aromatic ether groups to a polybenzimidazole backbone, a gas separation membrane having significantly improved oxygen permeability by using the same, and a method for preparing the same. The cardo copolybenzimidazoles have improved solubility as compared to the polybenzimidazole polymers according to the related art, show excellent mechanical properties while maintaining thermal stability so as to be formed into a film shape, and provide a gas separation membrane having significantly improved gas permeability, particularly, oxygen permeability. 2. A method for preparing cardo copolybenzimidazoles , comprising the steps of:i) dissolving 3,3′-diaminobenzidine and 9,9-bis(4-carboxyphenyl)fluorene as monomers and an aromatic dicarboxylic acid as a comonomer into a polymerization solvent under argon atmosphere and agitating them at 130-150° C. for 2-5 hours;ii) heating the reaction mixture of i) to 170-180° C. to carry out polycondensation for 12-15 hours;iii) carrying out precipitation of the polymer solution obtained from ii) in deionized water and removing the residual phosphoric acid; andiv) carrying out drying in a vacuum oven at 60-100° C. to obtain polymer powder.3. The method for preparing cardo copolybenzimidazoles according to claim 2 , wherein the aromatic dicarboxylic acid used as a comonomer in i) is any one selected from the group consisting of 4 claim 2 ,4′-oxybis(benzoic acid) claim 2 , diphenic acid claim 2 , biphenyl-4 claim 2 ,4′-dicarboxylic acid claim 2 , 4 claim 2 ,4′-sulfonyldibenzoic acid claim 2 , 4 claim 2 ,4′-(hexafluoroisopropylidene)bis(benzoic acid) claim 2 , terephthalic acid and isophthalic acid.4. The method for preparing cardo copolybenzimidazoles according to claim 2 , wherein the polymerization solvent used in i) is ...

Hydrogen purification/storage apparatus and method using liquid organic hydrogen carrier

The present disclosure relates to a hydrogen purification/storage apparatus and method using a liquid organic hydrogen carrier (LOHC).

USE OF SIRT7 AS NOVEL CANCER THERAPY TARGET AND METHOD FOR TREATING CANCER USING THE SAME

The present invention relates to the use of SIRT7 (sirtuin 7) as a marker for diagnosis of liver cancer. More specifically, the invention relates to a liver cancer diagnostic marker comprising SIRT7 gene, a liver cancer diagnostic composition, kit and microarray comprising the same, and a method of diagnosing liver cancer using the same. The invention also relates to a method for screening a substance capable of preventing or treating liver cancer by inhibiting the expression of SIRT7 gene or protein, and to a composition for preventing or treating liver cancer, which comprises the substance. The expression level of SIRT7 gene is higher in liver cancer tissue or cells than in non-liver cancer tissue or cells. Thus, when SIRT7 gene is used as a cancer diagnostic marker, cancer can be early diagnosed and predicted in a rapid and accurate manner, and it can be used as a target for development of an agent for preventing or treating cancer. Moreover, the invention is based on the finding that the expression of SIRT7 gene is indicative of the development and proliferation of cancer cells, and cell cycle transition, and thus the invention relates to the use of SIRT7 gene as a cancer diagnostic marker and to the anticancer use of inhibition of SIRT7 expression. In addition, the invention is based on the relationship between the SIRT7 expression and a specific miRNA, and thus relates to the use of the specific miRNA to regulate the cell cycle and inhibit tumor growth. 1. A cancer diagnostic marker comprising a substance for measuring the level of SIRT7 (sirtuin 7) gene or the level of SIRT7 protein.2. The cancer diagnostic marker of claim 1 , wherein the SIRT7 gene has a nucleotide sequence of SEQ ID NO: 1.3. The cancer diagnostic marker of claim 1 , wherein the substance for measuring the level of SIRT7 gene is a primer that can amplify the SIRT7 gene or a probe that can specifically bind to the SIRT7 gene.4. The cancer diagnostic marker of claim 1 , wherein the substance ...

Reversible fuel cell oxygen electrode, reversible fuel cell including the same, and method for preparing the same

Disclosed are a reversible fuel cell oxygen electrode in which IrO 2 is electrodeposited and formed on a porous carbon material and platinum is applied thereon to form a porous platinum layer, a reversible fuel cell including the same, and a method for preparing the same. According to the corresponding reversible fuel cell oxygen electrode, as the loading amounts of IrO 2 and platinum used in the reversible fuel cell oxygen electrode can be lowered, it is possible to exhibit excellent reversible fuel cell performances (excellent fuel cell performance and water electrolysis performance) by improving the mass transport of water and oxygen while being capable of reducing the loading amounts of IrO 2 and platinum. Further, it is possible to exhibit a good activity of a catalyst when the present disclosure is applied to a reversible fuel cell oxygen electrode and to reduce corrosion of carbon.

Anode for molten carbonate fuel cell having improved creep property, method for preparing the same, and molten carbonate fuel cell using the anode

Disclosed is an anode for a molten carbonate fuel cell (MCFC) having improved creep property by adding an additive for imparting creep resistance to nickel-aluminum alloy and nickel as materials for an anode. Improved sintering property, creep property and increased mechanical strength of a molten carbonate fuel cell may be obtained accordingly.

PtAu NANOPARTICLE CATALYST HEAT-TREATED IN THE PRESENCE OF CO AND METHOD FOR MANUFACTURING THE SAME

The present disclosure relates to a PtAu nanoparticle catalyst heat-treated in the presence of carbon monoxide (CO) and a method for preparing same. Since the PtAunanoparticle catalyst heat-treated under CO atmosphere has high Pt surface area and superior oxygen reduction reaction (ORR) activity, a high-efficiency, high-quality fuel cell can be achieved by applying the catalyst to a fuel cell. 1. A PtAu nanoparticle catalyst prepared by heat-treating an untreated PtAunanoparticle catalyst under carbon monoxide (CO) atmosphere , wherein x is an integer from 1 to 3 and y is 1.2. The PtAu nanoparticle catalyst according to claim 1 , which is heat-treated under air atmosphere before the heat treating under carbon monoxide (CO) atmosphere.3. The PtAu nanoparticle catalyst according to claim 1 , wherein the PtAu nanoparticle catalyst heat-treated in the presence of CO has a mass activity of 25-35 A/gfor oxygen reduction reaction (ORR).4. The PtAu nanoparticle catalyst according to claim 1 , wherein the PtAu nanoparticle catalyst heat-treated in the presence of CO has a surface Pt fraction of 70-80%.5. The PtAu nanoparticle catalyst according to claim 1 , wherein the PtAu nanoparticle catalyst heat-treated in the presence of CO has a specific activity of 1.5-2.0 mA/cm.6. The PtAu nanoparticle catalyst according to claim 1 , wherein the PtAu nanoparticle catalyst heat-treated in the presence of CO has an electrochemical surface area of Pt (ECA) of 35-45 m/g.7. The PtAu nanoparticle catalyst according to claim 1 , wherein the PtAu nanoparticle catalyst heat-treated in the presence of CO has a half-wave potential of 890-920 mV.8. The PtAu nanoparticle catalyst according to claim 1 , wherein the PtAu nanoparticle catalyst heat-treated in the presence of CO has a potential of zero total charge (pztc) of 210-250 mV.9. The PtAu nanoparticle catalyst according to claim 1 , wherein the heat treating is performed at 400-500 K.10. The PtAu nanoparticle catalyst according to claim 2 , ...

NON-PRECIOUS METAL BASED WATER ELECTROLYSIS CATALYST FOR OXYGEN EVOLUTION AT ANODE AND HYDROGEN EVOLUTION AT CATHODE AND PREPARATION METHOD OF THE SAME

Disclosed is a non-precious metal based water electrolysis catalyst represented by CoX/C (X is at least one selected from the group consisting of P, O, B, S and N) for evolution of hydrogen and oxygen at a cathode and anode, respectively, at the same time, the catalyst including a cobalt-containing compound fixed to a carbon carrier. 1. A non-precious metal based water electrolysis catalyst represented by the following Chemical Formula 1 for evolution of hydrogen and oxygen at a cathode and anode , respectively , the catalyst comprising a cobalt-containing compound fixed to a carbon carrier:{'br': None, 'CoX/C \u2003\u2003[Chemical Formula 1]'}wherein X is at least one selected from the group consisting of P, O, B, S and N.2. The non-precious metal based water electrolysis catalyst according to claim 1 , wherein X in the above formula is at least one selected from the group consisting of P claim 1 , B claim 1 , S and N.3. The non-precious metal based water electrolysis catalyst according to claim 1 , wherein X in the above formula is P.4. The non-precious metal based water electrolysis catalyst according to claim 1 , wherein the cobalt-containing compound is nanoparticles surrounded with an amorphous layer having a thickness of 0.1-7 nm.5. The non-precious metal based water electrolysis catalyst according to claim 4 , wherein the amorphous layer comprises Co claim 4 , X and O.6. The non-precious metal based water electrolysis catalyst according to claim 1 , wherein the cobalt-containing compound is nanoparticles having a particle size of 5-100 nm.7. The non-precious metal based water electrolysis catalyst according to claim 1 , wherein the cobalt-containing compound is nanoparticles having a particle size of 5-30 nm.8. The non-precious metal based water electrolysis catalyst according to claim 1 , wherein the cobalt-containing compound has oxide of X on the surface thereof.9. The non-precious metal based water electrolysis catalyst according to claim 1 , wherein the ...

METHOD AND APPARATUS FOR GENERATING HYDROGEN FROM FORMIC ACID

The present invention provides a hydrogen generating apparatus and a hydrogen generating method, wherein the hydrogen generating apparatus generates hydrogen by dehydrating formic acid, and comprises: a reactor for containing water and a heterogeneous catalyst; a formic acid feeder for feeding formic acid into the reactor; and a moisture remover for removing moisture generated from the reactor. 1. An apparatus for generating hydrogen by dehydrogenation of a formic acid , comprising:a reactor containing water and a heterogeneous catalyst;a formic acid feeder configured to supply a formic acid into the reactor; anda moisture remover configured to remove moisture generated at the reactor.2. The apparatus for generating hydrogen according to claim 1 , further comprising:a freezer configured to condense the moisture removed by the moisture remover and supply the condensed moisture to the reactor.3. The apparatus for generating hydrogen according to claim 1 ,wherein the heterogeneous catalyst is a solid catalyst.4. The apparatus for generating hydrogen according to claim 1 ,wherein the formic acid supplied to the reactor by the formic acid feeder is an aqueous formic acid solution with a concentration of 70 to 99.9 wt %.5. The apparatus for generating hydrogen according to claim 1 ,wherein the formic acid feeder supplies the formic acid to the reactor at a feed rate of 0.1 mL to 2.2 L per minute.6. The apparatus for generating hydrogen according to claim 1 ,wherein the water and the formic acid supplied to the reactor by the formic acid feeder are mixed at the reactor to form an aqueous formic acid solution with a concentration of 20 to 90 wt %.7. A method for generating hydrogen by dehydrogenation of a formic acid claim 1 , comprising claim 1 ,adding a formic acid to a mixture of water and a heterogeneous catalyst to perform a dehydrogenation reaction.8. The method for generating hydrogen according to claim 7 , further comprising:removing a moisture generated at the ...

POROUS NAFION MEMBRANE AND METHOD FOR PREPARING THE SAME

Provided are a method for preparing a Nafion membrane having a through-pore free monolithic porous structure throughout the bulk of the membrane through a one-step process very easily and a Nafion membrane having a through-pore free monolithic porous structure obtained from the method. The Nafion membrane having such a porous structure may have an increased surface area, and thus may improve the membrane/catalyst interfacial area and transport characteristics. 1. A porous Nafion membrane , wherein a surface and a whole inner part of the Nafion membrane consists of a monolithic porous structure , and the monolithic porous structure is a through-pore free structure.2. The porous Nafion membrane according to claim 1 , wherein the porous Nafion membrane has a uniform monolithic porous structure free from giant pores claim 1 , wherein open pores are distributed on both surfaces of the membrane and closed pores are distributed inside of the membrane.3. The porous Nafion membrane according to claim 1 , wherein all pores of the monolithic porous structure show a pore size deviation within +100% and −98% from average pore size of the monolithic porous structure.4. The porous Nafion membrane according to claim 1 , wherein the monolithic porous structure has the largest pore diameter (LPD) not exceeding twice of the 90% average pore diameter (APD).5. The porous Nafion membrane according to claim 1 , wherein the monolithic porous structure has pores less than 20% of which are connected and 80% or more of which are not connected but separated from each other.6. The porous Nafion membrane according to claim 1 , wherein the porous Nafion membrane maintains its membrane shape without any distortion of its membrane shape.7. The porous Nafion membrane according to claim 6 , wherein the porous Nafion membrane is an opaque white membrane.8. The porous Nafion membrane according to claim 1 , wherein the monolithic porous structure is obtained by a solvent evaporation process.9. The ...

Use of h2a.z.1 as a hepatocellular carcinoma biomarker

The present disclosure relates to a use of H2AFZ as a hepatocellular carcinoma (HCC) biomarker and more particularly, to a marker for diagnosing hepatocellular carcinoma consisting of a H2AFZ gene or an expression protein H2A.Z.1 thereof, a composition for diagnosing or estimating prognosis of HCC, a method for diagnosing or estimating prognosis of HCC, a method of detecting a biomarker for diagnosing or estimating prognosis of HCC, a screening method of an HCC therapeutic agent, and a pharmaceutical composition for preventing or treating HCC. As it is verified that the expression level of the H2AFZ gene according to the present disclosure is increased in an HCC tissue or HCC cells compared to a non-HCC tissue or non-HCC cells, in the case of using the H2AFZ gene as the marker for diagnosing the HCC, the HCC can be rapidly and accurately diagnosed and predicted in early stages and the H2AFZ gene can be used as a target for developing a therapeutic agent for preventing or treating the HCC.

Ionic conductivity measurement device of electrolyte membrane

An ionic conductivity measurement device of an electrolytic membrane includes a humidification chamber configured to accommodate an ion-conductive electrolytic membrane and having concave grooves respectively formed at both sides thereof which face the electrolytic membrane to form a measurement space for measuring ionic conductivity of the electrolytic membrane; a plurality of channels formed at a bottom surface of each of the concave grooves; a gas distribution unit detachably coupled to each of the concave grooves with the electrolytic membrane being interposed therebetween; and a plurality of electrodes provided in contact with one side of the electrolytic membrane and supported by the gas distribution unit, the plurality of electrodes being disposed side by side to measure an impedance of the electrolytic membrane.

AMMONIA MEMBRANE REACTOR COMPRISING A COMPOSITE MEMBRANE

The present specification discloses a membrane reactor comprising a reaction region; a permeate region; and a composite membrane disposed at a boundary of the reaction region and the permeate region, wherein the reaction region comprises a bed filled with a catalyst for dehydrogenation reaction, wherein the composite membrane comprises a support layer including a metal with a body-centered-cubic (BCC) crystal structure, and a catalyst layer including a palladium (Pd) or a palladium alloy formed onto the support layer, wherein ammonia (NH) is supplied to the reaction region, the ammonia is converted into hydrogen (H) by the dehydrogenation reaction in the presence of the catalyst for dehydrogenation reaction, and the hydrogen permeates the composite membrane and is emitted from the membrane reactor through the permeate region. 1. A membrane reactor comprising a reaction region; a permeate region; and a composite membrane disposed at a boundary of the reaction region and the permeate region ,wherein the reaction region comprises a bed filled with a catalyst for dehydrogenation reaction,wherein the composite membrane comprises a support layer including a metal with a body-centered-cubic (BCC) crystal structure, and a catalyst layer including a palladium (Pd) or a palladium alloy formed onto the support layer,{'sub': 3', '2, 'wherein ammonia (NH) is supplied to the reaction region, the ammonia is converted into hydrogen (H) by the dehydrogenation reaction in the presence of the catalyst for dehydrogenation reaction, and the hydrogen permeates the composite membrane and is emitted from the membrane reactor through the permeate region.'}2. The membrane reactor according to claim 1 , wherein the surface of the support layer is in contact with the reaction region claim 1 , and the surface of the catalyst layer is in contact with the permeate region.3. The membrane reactor according to claim 1 , wherein the metal with the body-centered-cubic (BCC) crystal structure includes ...

CATALYST FOR OXYGEN REDUCTION REACTION AND PREPARATION METHOD OF THE SAME

Provided is a catalyst for oxygen reduction reaction comprising an alloy comprising at least one selected from Pt, Pd and Ir supported on a carbon carrier functionalized with poly(N-isopropylacrylamide) (PNIPAM). The catalyst for oxygen reduction reaction has electronic ensemble effects by virtue of the carbon carrier functionalized with poly(N-isopropylacrylamide) (PNIPAM), and thus shows improved oxygen reduction activity and durability as compared to conventional catalysts supported on carbon. 1. A catalyst for oxygen reduction reaction , comprising an alloy comprising at least one selected from Pt , Pd and Ir supported on a carbon carrier functionalized with poly(N-isopropylacrylamide) (PNIPAM).2. The catalyst for oxygen reduction reaction according to claim 1 , wherein the alloy comprising at least one selected from Pt claim 1 , Pd and Ir is an alloy of a metal selected from the group consisting of Pt claim 1 , Pd and Ir with a transition metal other than Pt claim 1 , Pd and Ir.3. The catalyst for oxygen reduction reaction according to claim 2 , wherein the transition metal is selected from the group consisting of Co claim 2 , Ni claim 2 , Fe claim 2 , Cu claim 2 , Cr and Mn.4. The catalyst for oxygen reduction reaction according to claim 1 , wherein the alloy comprising at least one selected from Pt claim 1 , Pd and Ir is nanoparticles.5. The catalyst for oxygen reduction reaction according to claim 1 , wherein the alloy comprising at least one selected from Pt claim 1 , Pd and Ir is nanoparticles having a particle diameter of 1-20 nm.6. The catalyst for oxygen reduction reaction according to claim 1 , which is represented by the following Chemical Formula 1:{'br': None, 'i': XY/C', 'PNIPAM, '-\u2003\u2003[Chemical Formula 1]'}wherein X is at least one selected from the group consisting of Pt, Pd and Ir, Y is at least one selected from the group consisting of Co, Ni, Fe, Cu, Cr and Mn, C is carbon, and PNIPAM is poly(N-isopropylacrylamide).7. The catalyst for ...

Polymer electrolyte membrane fuel cell including complex catalyst and method for producing the complex catalyst

A polymer electrolyte membrane fuel cell is provided. The polymer electrolyte membrane fuel cell includes a phosphoric acid-doped polyimidazole electrolyte membrane and a complex catalyst. In the complex catalyst, an alloy or mixture of a metal and a chalcogen element is supported on a carbon carrier. The polymer electrolyte membrane fuel cell exhibits further improved long-term operation, power generation efficiency, and operational stability at high temperature. The complex catalyst can be produced by a simple method.

LIVER CANCER-SPECIFIC BIOMARKER

The present disclosure relates to the use of genes whose expression or protein changes specifically to hepatocellular carcinoma as biomarkers for the detection and diagnosis of hepatocellular carcinoma, in which the biomarkers of the present disclosure, HMMR, NXPH4, PITX1, THBS4, and UBE2T, since they change their expression specifically to hepatocellular carcinoma, may be used as hepatocellular carcinoma-specific markers, and furthermore, these biomarkers may be used independently or in combination with AFP, or may be independently combined to make a more specific and accurate diagnosis of hepatocellular carcinoma. 1. A biomarker for diagnosis of liver cancer , the biomarker comprising at least one gene selected from a group consisting of AFP (α-fetoprotein) , HMMR (hyaluronan-mediated motility receptor) , NXPH4 (neurexophilin 4) , PITX1 (paired-like homeodomain 1) , THBS4 (thrombospondin 4) and UBE2T (ubiquitin-conjugating enzyme E2T) or a protein expressed from the at least one gene.2. The biomarker of claim 1 , wherein the liver cancer is hepatocellular carcinoma (HCC).3. The biomarker of claim 2 , wherein the hepatocellular carcinoma includes early hepatocellular carcinoma or advanced hepatocellular carcinoma.4. A composition for diagnosis of liver cancer claim 2 , the composition comprising an agent for measuring an expression level of one or more biomarker genes selected from a group consisting of AFP claim 2 , HMMR claim 2 , NXPH4 claim 2 , PITX1 claim 2 , THBS4 and UBE2T at an mRNA or protein level.5. The composition of claim 4 , wherein the composition includes an agent for measuring an expression level of one or more biomarker gene sets selected from a group consisting of AFP and HMMR claim 4 , AFP and NXPH4 claim 4 , AFP and PITX1 claim 4 , AFP and THBS4 claim 4 , AFP and UBE2T claim 4 , HMMR and NXPH4 claim 4 , HMMR and PITX1 claim 4 , HMMR and THBS4 claim 4 , HMMR and UBE2T claim 4 , NXPH4 and PITX1 claim 4 , NXPH4 and THBS4 claim 4 , NXPH4 and UBE2T ...

Sulfonated polyethersulfone copolymer containing hydroxyl groups and preparation method thereof, polymer electrolyte membrane for fuel cells and membrane electrode assembly comprising the same

Provided are a hydroxyl group-containing sulfonated polyethersulfone copolymer, a method for preparing the same, a polymer electrolyte membrane for fuel cell, and a membrane electrode assembly including the same. More particularly, provided are a hydroxyl group-containing sulfonated polyethersulfone electrolyte membrane and a membrane electrode assembly including the same, which are applied to a fuel cell to provide significantly higher ion conductivity as compared to the sulfonated polymer electrolyte membranes according to the related art. The hydroxyl group-containing sulfonated polyethersulfone copolymer electrolyte membrane shows significantly higher ion conductivity under various temperature and humidity conditions as compared to the sulfonated polymer electrolyte membranes according to the related art. Therefore, it is expected that the hydroxyl group-containing sulfonated polyethersulfone copolymer substitutes for expensive fluoropolymer electrolyte membranes such as Nafion.

COMPOSITE POLYMER ELECTROLYTE MEMBRANE FOR FUEL CELL, AND METHOD OF MANUFACTURING THE SAME

A composite polymer electrolyte membrane for a fuel cell may be manufactured by the following method: partially or totally filling the inside of a pore of a porous support with a hydrogen ion conductive polymer electrolyte solution by performing a solution impregnation process; and drying the hydrogen ion conductive polymer electrolyte solution while completely filling the inside of the pore with the hydrogen ion conductive polymer electrolyte solution by performing a spin dry process on the porous support of which the inside of the pore is partially or totally filled with the hydrogen ion conductive polymer electrolyte solution. 1. A method of manufacturing a composite polymer electrolyte membrane for a fuel cell comprising: partially or totally filling inside of a pore of a porous support with a hydrogen ion conductive polymer electrolyte solution by performing a solution impregnation process; anddrying the hydrogen ion conductive polymer electrolyte solution while completely filling the inside of the pore with the hydrogen ion conductive polymer electrolyte solution by performing a spin dry process on the porous support in which the inside of the pore is partially or totally filled with the hydrogen ion conductive polymer electrolyte solution.2. The method according to claim 1 , wherein the spin dry process is performed after the solution impregnation process is performed.3. The method according to claim 1 , wherein the hydrogen ion conductive polymer electrolyte solution is a perfluorinated sulfonic acid ionomer (PFSA ionomer) solution claim 1 , and wherein the porous support is a porous fluorinated polymer support.4. The method according to claim 3 , wherein the perfluorinated sulfonic acid ionomer solution comprises a perfluorinated sulfonic acid ionomer in an amount of 1 wt % to 20 wt % based on a total amount of the perfluorinated sulfonic acid ionomer solution.5. The method according to claim 1 , wherein the solution impregnation process is a spray process ...

METHOD OF PREPARING NICKEL-ALUMINUM ALLOY POWDER AT LOW TEMPERATURE

Provided is a method for preparing nickel-aluminum alloy powder at low temperature, which is simple and economical and is capable of solving the reactor corrosion problem. The method for preparing nickel-aluminum alloy powder at low temperature includes: preparing a powder mixture by mixing nickel powder and aluminum powder in a reactor and adding aluminum chloride into the reactor (S1); vacuumizing the inside of the reactor and sealing the reactor (S2); and preparing nickel-aluminum alloy powder by heat-treating the powder mixture in the sealed reactor at low temperature (S3). 1. A method for preparing nickel-aluminum alloy powder at low temperature , comprising:preparing a powder mixture by mixing nickel powder and aluminum powder in a reactor and adding aluminum chloride into the reactor (S1);vacuumizing the inside of the reactor and sealing the reactor (S2); andpreparing nickel-aluminum alloy powder by heat-treating the powder mixture in the sealed reactor at low temperature (S3).2. The method for preparing nickel-aluminum alloy powder at low temperature according to claim 1 , wherein claim 1 , in said preparing the powder mixture claim 1 , the aluminum powder is included in an amount of 0.1-24 wt % based on the weight of the powder mixture and the aluminum chloride.3. The method for preparing nickel-aluminum alloy powder at low temperature according to claim 1 , wherein claim 1 , in said preparing the powder mixture claim 1 , the aluminum chloride is included in an amount of 0.01-5 wt % based on the weight of the powder mixture and the aluminum chloride.4. The method for preparing nickel-aluminum alloy powder at low temperature according to claim 1 , wherein claim 1 , in said vacuumizing the inside of the reactor claim 1 , the degree of vacuum inside the reactor is maintained at 10Torr or below.5. The method for preparing nickel-aluminum alloy powder at low temperature according to claim 1 , wherein claim 1 , in said heat-treating the powder mixture claim 1 , ...

COMPLEX APPARATUS OF REVERSE ELECTRODIALYSIS EQUIPMENT AND DESALINATION PLANT AND METHOD FOR IMPROVING POWER DENSITY THEREOF

In a complex system including a desalination plant and a reverse electrodialysis equipment, a concentrated sea water discharged from the desalination plant having a salt concentration of about 50 to 75 g/L or about 50 to 60 g/L is provided as a high-concentration salt solution of the reverse electrodialysis equipment while low salinity water having a salt concentration of about 0.01 to 2 g/L, most preferably about 0.01 to 1 g/L, is provided as a low-concentration salt solution of the reverse electrodialysis equipment. Thereby, a recycling degree of a concentrated sea water may be enhanced as well as a power density produced by the complex system is significantly improved. 1. A method for improving a power density of a reverse electrodialysis equipment in a complex apparatus of a desalination plant and the reverse electrodialysis equipment , comprising:supplying a sea water to the desalination plant and at least partially desalinize the sea water into a fresh water,supplying a concentrated sea water, whose salt concentration is increased to about 50 to 75 g/L after the desalinization, to the reverse electrodialysis equipment,supplying a low salinity water having a salt concentration of about 0.01 to 20 g/L to the reverse electrodialysis equipment.2. The method according to claim 1 , wherein the low salinity water has a salt concentration of about 0.01 to 2 g/L.3. The method according to claim 1 , wherein the low salinity water has a salt concentration of about 0.01 to 1 g/L.4. The method according to claim 1 , wherein the concentrated see water of about 50 to 60 g/L is supplied to the reverse electrodialysis equipment claim 1 , andthe low salinity water of has a salt concentration of about 0.01 to 2 g/L.5. The method according to claim 1 , wherein the concentrated see water of about 50 to 60 g/L is supplied to the reverse electrodialysis equipment claim 1 , andthe low salinity water of has a salt concentration of about 0.01 to 1 g/L.6. The method according to claim 2 ...

Dry reforming catalyst, method for preparing same, and dry reforming method using corresponding catalyst

Provided are: a dry reforming catalyst, in which a noble metal (M) is doped in a nickel yttria stabilized zirconia complex (Ni/YSZ) and an alloy (M-Ni alloy) of the noble metal (M) and nickel is formed at Ni sites on a surface of the nickel yttria stabilized zircona (YSZ); a method for producing the dry reforming catalyst using the noble metal/glucose; and a method for performing dry reforming using the catalyst. The present invention can exhibit a significantly higher dry reforming activity as compared with Ni/YSZ catalysts. Furthermore, the present invention can have an improved long-term performance by suppressing or preventing the deterioration. Furthermore, the preparing method is useful in performing the alloying of noble metal with Ni at Ni sites on the Ni/YSZ surface and can simplify the preparing process, and thus is suitable in mass production.

USE OF H2A.Z.1 AS A HEPATOCELLULAR CARCINOMA BIOMARKER

The present disclosure relates to a use of H2AFZ as a hepatocellular carcinoma (HCC) biomarker and more particularly, to a marker for diagnosing hepatocellular carcinoma consisting of a H2AFZ gene or an expression protein H2A.Z.1 thereof, a composition for diagnosing or estimating prognosis of HCC, a method for diagnosing or estimating prognosis of HCC, a method of detecting a biomarker for diagnosing or estimating prognosis of HCC, a screening method of an HCC therapeutic agent, and a pharmaceutical composition for preventing or treating HCC. 119.-. (canceled)20. A method for treating hepatocellular carcinoma (HCC) in an individual , comprising administering a small interference RNA (siRNA) that inhibits the expression of H2AFZ gene ,wherein the siRNA consists of a sequence set forth in SEQ ID NO:2.21. A method for treating hepatocellular carcinoma (HCC) in an individual comprising: treating a target biological sample with a material for measuring an expression level of H2A.Z.1 gene and H2A.Z.2 gene;', 'measuring the expression level of the H2A.Z.1 gene and H2A.Z.2 gene from the target biological sample;', 'comparing a measured result of the gene expression level with a reference value; determining that HCC is more present when the expression of the H2A.Z.1 gene is increased and the expression of H2A.Z.2 is not changed;, 'detecting a biomarker for estimating prognosis of hepatocellular carcinoma (HCC), comprisingtreating the individual comprising administering a small interference RNA (siRNA) that inhibits the expression of H2AFZ gene, wherein the siRNA consists of a sequence set forth in SEQ ID NO:2. This application is based on and claims priority from Korean Patent Application No. 10-2016-0006638, filed on Jan. 19, 2016, with the Korean Intellectual Property Office, the disclosure of which is incorporated herein in its entirety by reference.The present disclosure relates to a use of H2A.Z.1 as a hepatocellular carcinoma (HCC) biomarker and more particularly, to ...

CATHODE FOR MOLTEN CARBONATE FUEL CELLS HAVING STRUCTURE PROVIDING NEW ELECTROCHEMICAL REACTION SITES, METHOD FOR PREPARING THE SAME, AND METHOD FOR IMPROVING CATHODE PERFORMANCE BY WETTABILITY CONTROL ON MOLTEN CARBONATE ELECTROLYTE FOR MOLTEN CARBONATE FUEL CELLS

By forming a structure wherein an oxygen ionic conductor or a mixed ionic-electronic conductor (MIEC) on a cathode surface is not covered by a molten carbonate electrolyte using an oxygen ionic conductor or a mixed ionic-electronic conductor having poor wettability on the molten carbonate electrolyte, a new electrochemical reaction site may be provided in addition to that provided by the molten carbonate electrolyte. As a result, cell performance, particularly cathode performance, can be improved even at low operation temperatures (e.g., 500-600° C.). 1. A cathode for a molten carbonate fuel cell ,whereina first structure and a second structure are formed on the cathode,a surface of the second structure is exposed at least partly without being covered by a material of the first structure,the first structure comprises a molten carbonate electrolyte,the second structure comprises an oxygen ionic conductor, a mixed oxygen ionic-electronic conductor or a combination thereof,the first structure provides a first electrochemical reaction site, andthe second structure whose surface is exposed at least partly without being covered by the first structure provides a second electrochemical reaction site which is different from the first electrochemical reaction site provided by the first structure.2. The cathode for a molten carbonate fuel cell according to claim 1 , wherein the first structure is in contact with the second structure.3. The cathode for a molten carbonate fuel cell according to claim 2 , wherein a reaction according to [Reaction Formula 1] occurs in a portion where the first structure is in contact with the second structure and a reaction according to [Reaction Formula 2] occurs in a portion of the second structure exposed without being in contact with the first structure:{'br': None, 'sub': 2', '3, 'sup': 2−', '2−, 'CO+O→CO\u2003\u2003[Reaction Formula 1]'}{'br': None, 'sub': '2', 'i': 'e', 'sup': −', '2−, '½O+2→O\u2003\u2003[Reaction Formula 2]'}4. The cathode ...

5-(5-(2,6-DIOXYPHENYL)TETRAZOLE CONTAINING POLYMER, MEMBRANE CONTAINING THE SAME, ELECTROCHEMICAL DEVICE INCLUDING THE MEMBRANE AND METHOD FOR PREPARING THE SAME

Disclosed are a 5-(2,6-dioxyphenyl)tetrazole-containing polymer, a method for preparing the same, a membrane containing the same and an electrochemical device, particularly a high temperature polymer electrolyte membrane fuel cell, including the membrane. The membrane containing the 5-(2,6-dioxyphenyl)tetrazole-containing polymer is capable of providing high proton conductivity and exhibiting good mechanical properties, thereby capable of providing superior fuel cell performance. Accordingly, the membrane may be usefully used in an electrochemical device, particularly a fuel cell, more particularly a high temperature polymer electrolyte membrane fuel cell. 4. The 5-(2 claim 3 ,6-dioxyphenyl)tetrazole-containing polymer according to claim 3 , wherein unreacted nitrile groups are present in part of the 5-(2 claim 3 ,6-dioxyphenyl)tetrazole-containing polymer.5. The 5-(2 claim 1 ,6-dioxyphenyl)tetrazole-containing polymer according to claim 1 , wherein the 5-(2 claim 1 ,6-dioxyphenyl)tetrazole-containing polymer is capable of exhibiting resonance stabilization of positive charge as tetrazole groups are protonated to tetrazolium ions.6. The 5-(2 claim 1 ,6-dioxyphenyl)tetrazole-containing polymer according to claim 1 , wherein the 5-(2 claim 1 ,6-dioxyphenyl)tetrazole-containing polymer is capable of providing sites for proton hopping in protonated state.7. A polymer composition comprising the 5-(2 claim 1 ,6-dioxyphenyl)tetrazole-containing polymer according to .8. The polymer composition according to claim 7 , wherein the polymer composition is a polymer composition wherein the 5-(2 claim 7 ,6-dioxyphenyl)tetrazole-containing polymer is blended with a basic polymer.9. The polymer composition according to claim 7 , wherein the polymer composition is a polymer composition in which one or more selected from a group consisting of Nafion claim 7 , a Nafion derivative claim 7 , sulfonated poly(ether ether ketone) (SPEEK) claim 7 , sulfonated polysulfone claim 7 , ...

UNMANNED AERIAL VEHICLE SYSTEM HAVING MULTI-ROTOR TYPE ROTARY WING

The present invention relates to an unmanned aerial vehicle system having a multi-rotor type rotary wing. The unmanned aerial vehicle system having a multi-rotor type rotary wing includes a first unmanned aerial vehicle, at least one second unmanned aerial vehicle, and a bridge that connects the first unmanned aerial vehicle and the at least one second unmanned aerial vehicle to be separable from each other, wherein the at least one second unmanned aerial vehicle is moveable by the first unmanned aerial vehicle in a state where the at least one second unmanned aerial vehicle is coupled to the first unmanned aerial vehicle by the bridge without being driven, and the at least one second unmanned aerial vehicle is separable from the first unmanned aerial vehicle which is in flight. 1. An unmanned aerial vehicle system having a multi-rotor type rotary wing comprising:a first unmanned aerial vehicle;at least one second unmanned aerial vehicle; anda bridge that connects the first unmanned aerial vehicle and the at least one second unmanned aerial vehicle to be separable from each other,wherein the at least one second unmanned aerial vehicle is moveable by the first unmanned aerial vehicle in a state where the at least one second unmanned aerial vehicle is coupled to the first unmanned aerial vehicle by the bridge without being driven, andthe at least one second unmanned aerial vehicle is separable from the first unmanned aerial vehicle which is in flight.2. The unmanned aerial vehicle system of claim 1 , wherein the at least one second unmanned aerial vehicle is coupled vertically above or below the first unmanned aerial vehicle by the bridge.3. The unmanned aerial vehicle system of claim 2 , whereina plurality of the second unmanned aerial vehicles are coupled by a plurality of bridges attached to the first unmanned aerial vehicle, ora plurality of second unmanned aerial vehicles are coupled consecutively by the bridge attached to the second unmanned aerial vehicle ...

Ammonia membrane reactor comprising a composite membrane

The present specification discloses a membrane reactor comprising a reaction region; a permeate region; and a composite membrane disposed at a boundary of the reaction region and the permeate region, wherein the reaction region comprises a bed filled with a catalyst for dehydrogenation reaction, wherein the composite membrane comprises a support layer including a metal with a body-centered-cubic (BCC) crystal structure, and a catalyst layer including a palladium (Pd) or a palladium alloy formed onto the support layer, wherein ammonia (NH3) is supplied to the reaction region, the ammonia is converted into hydrogen (H2) by the dehydrogenation reaction in the presence of the catalyst for dehydrogenation reaction, and the hydrogen permeates the composite membrane and is emitted from the membrane reactor through the permeate region.

Catalyst in which catalytic metal is supported on hexagonal support, and preparation method therefor

The present invention relates to a catalyst in which a catalytic metal is supported on a support including a single-crystalline hexagonal material, and a preparation method therefor, wherein the catalyst can be effectively used in ammonia dehydrogenation or ammonia synthesis.

Use of SIRT7 as novel cancer therapy target and method for treating cancer using the same

The use of SIRT7 (sirtuin 7) as a marker for diagnosis of liver cancer is described. The disclosure variously relates to a liver cancer diagnostic marker including SIRT7 gene, a liver cancer diagnostic composition, a kit and microarray including the same, and a method of diagnosing liver cancer using the same. Also described is a method for screening a substance capable of treating liver cancer by inhibiting the expression of SIRT7 gene or protein, and a composition for preventing or treating liver cancer, which includes such substance. The disclosure further relates to the use of SIRT7 gene as a cancer diagnostic marker and the anticancer use of inhibition of SIRT7 expression, as well as the use of the specific miRNA to regulate the cell cycle and inhibit tumor growth by the expression of SIRT7 gene.

Catalyst for dehydrogenation reaction of formic acid and method for preparing the same

Provided is a method for preparing a catalyst for a dehydrogenation reaction of formic acid, the method including: preparing a nitrogen-doped carbon support; forming a mixed solution including a first aqueous metal precursor solution which includes palladium (Pd) and a second aqueous metal precursor solution which includes nickel (Ni); and forming a catalyst for a dehydrogenation reaction of formic acid by stirring the nitrogen-doped carbon support with the mixed solution, and then immobilizing alloy particles of Pd and Ni on the nitrogen-doped carbon support.

Direct formic acid fuel cell performing real time measurement and control of concentration of formic acid and operation method thereof

Provided are a direct formic acid fuel cell capable of maintaining performance constantly through implementing the real time measurement and control of formic acid concentration.

Internal reforming molten carbonate fuel cell with membrane for intercepting carbonate vapor

An internal reforming molten carbonate fuel cell having a membrane for intercepting carbonate vapor and hydrated vapor is disclosed. The intercepting membrane is made from nickel or nickel alloy which has a high electrical conductivity, corrosion resistant property in an anode environment, and a low affinity for the carbonate vapor. Due to the presence of the intercepting membrane, the transfer of the carbonate vapors and hydrated vapors to the internal reforming catalyst is markedly retarded to prolong the catalytic activity. As a result, a longer operating molten carbonate fuel cell can be obtained.

Partially sulfonated polybenzimidazole based polymer, method for preparing the same, MEA for fuel cell using the polybenzimidazole based polymer and method for preparing the same

A partially sulfonated polybenzimidazole based polymer for fuel cell membrane is prepared by copolymerizing monomers of 3,3′-diaminobenzidine, isophthalic acid and 5-sulfoisophthalic acid to obtain a partially sulfonated polybenzimidazole, and doping the partially sulfonated polybenzimidazole with inorganic acid.

Cardo copolybenzimidazoles, gas separation membranes and preparation method thereof

Method of preparing nickel-aluminum alloy powder at low temperature

Provided is a method for preparing nickel-aluminum alloy powder at low temperature, which is simple and economical and is capable of solving the reactor corrosion problem. The method for preparing nickel-aluminum alloy powder at low temperature includes: preparing a powder mixture by mixing nickel powder and aluminum powder in a reactor and adding aluminum chloride into the reactor (S1); vacuumizing the inside of the reactor and sealing the reactor (S2); and preparing nickel-aluminum alloy powder by heat-treating the powder mixture in the sealed reactor at low temperature (S3).

Electrode having microstructure of extended triple phase boundary by porous ion conductive ceria film coating and method to manufacture the said electrode

Disclosed is an electrode having a novel configuration for improving performance of the electrode used in solid-oxide fuel cells, sensors and solid state devices, in which the electrode providing electron conductivity is coated with ion conductive ceramic ceria film, enabling an electron conductive path and an ion conductive path to be independently and continuously maintained, and additionally extending a triple phase boundary where electrode/electrolyte/gas are in contact, and a method for manufacturing the same. The electrode is manufactured by coating the prefabricated electrode for use in a SOFC or sensor with a porous oxygen ion conductive ceramic ceria film by a sol-gel method, whereby the electron conductive material and ion conductive material exist independently, having a new microstructure configuration with a greatly extended triple phase boundary, thus improving electrode performance. Accordingly, such electrode does not require high cost equipment or starting materials, owing to the sol-gel method by which low temperature processes are possible. Moreover, the electrode microstructure can be controlled in an easy manner, realizing economic benefits, and the electrode/electrolyte interfacial resistance and electrode resistance can be effectively decreased, thereby improving performance of electrodes used in SOFCs, sensors and solid state devices.

Hydroxyl group-containing sulfonated polyethersulfone copolymer and preparation method thereof, polymer electrolyte membrane for fuel cell and membrane electrode assembly comprising the same

【課題】ヒドロキシ基を含有するスルホン化ポリエーテルスルホンの共重合体及びその製造方法、前記共重合体を用いた燃料電池用高分子電解質膜及び膜電極接合体の提供。【解決手段】ヒドロキシ基を含有するスルホン化ポリエーテルスルホンの共重合体であって、スルホン化度が３０〜７０％である燃料電池用高分子膜で、下記の方法で、製造する共重合体。ｉ）前記スルホニルクロリド基及びヒドロキシ基を含有するスルホン化ポリエーテルスルホンの共重合体ＩＩＩをジメチルアセトアミド、ジメチルスルホキシド又はＮ−メチルピロリドンに溶解させて、２〜５重量％の重合体溶液を得る段階と、ｉｉ）前記重合体溶液をガラス板に塗布した後、乾燥して膜を形成する段階と、ｉｉｉ）前記膜を薄い硫酸又は塩酸溶液に３〜４時間浸漬させた後、沸湯で洗浄して、前記スルホニルクロリド基をスルホン酸基に切り替える段階と、を含む燃料電池用高分子電解質膜の製造方法。【選択図】図４

Process for preparing a cathode containing alkaline earth metal oxides for molten carbonate fuel cells

The present invention relates to a cathode, which can be used in molten carbonate fuel cells (hereinafter, referred to as an "MCFC"), and a process for preparing the same. In such a cathode, NiO, which is inexpensive and has relatively good electrochemical performance, has been mainly used. However, NiO has a relatively large solubility in electrolytes of an MCFC which causes the cells to be short circuited, thereby shortening the life of the cells. However, according to the present invention, a cathode having a longer life than common cathodes for MCFC can be prepared by adding alkaline earth metal oxides, which are basic substances, to NiO, the main material of the cathodes, or impregnating an Ni plate with a solution of the alkaline earth metal oxides, to reduce the solubility of the NiO while maintaining its performance as the cathode.

Ionic conductivity measurement device of electrolyte membrane

An ionic conductivity measurement device of an electrolytic membrane includes a humidification chamber configured to accommodate an ion-conductive electrolytic membrane and having concave grooves respectively formed at both sides thereof which face the electrolytic membrane to form a measurement space for measuring ionic conductivity of the electrolytic membrane; a plurality of channels formed at a bottom surface of each of the concave grooves; a gas distribution unit detachably coupled to each of the concave grooves with the electrolytic membrane being interposed therebetween; and a plurality of electrodes provided in contact with one side of the electrolytic membrane and supported by the gas distribution unit, the plurality of electrodes being disposed side by side to measure an impedance of the electrolytic membrane.

Dehydrogenation reaction apparatus and system including the same

A dehydrogenation reaction apparatus and a system including the same are disclosed. The dehydrogenation reaction apparatus includes: a main housing; and a dehydrogenation reactor which is provided inside of the main housing and has a catalyst provided inside. In particular, the dehydrogenation reactor generates hydrogen from a liquid organic hydrogen carrier (LOHC). The dehydrogenation reaction apparatus further includes: a heating device provided inside of the main housing and configured to apply heat to the dehydrogenation reactor through a phase change material, where the phase change material is provided between the main housing, and the dehydrogenation reactor and the heating device.

Unit cell of honeycomb-type solid oxide fuel cell, stack using the unit cell and method manufacturing the unit cell and stack

Disclosed is a unit cell of a honeycomb-type solid oxide fuel cell (SOFC) having a plurality of channels. The channels include cathode channels and anode channels. The cathode channels and anode channels are set up alternately in the unit cell. A collector is installed inside each of the cathode channels and the anode channels, and a packing material is packed into the channels having the collector. Disclosed also is a stack including the unit cells and methods for manufacturing the unit cell and the stack.

Dehydrogenation reaction apparatus

A dehydrogenation reaction apparatus includes a dehydrogenation reactor having a reaction vessel that stores a chemical hydride; and a methane generator that converts carbon monoxide generated in the dehydrogenation reactor into methane.

Composition for prevention or treatment of liver cancer, comprising modified rt-let7 as active ingredient

The present invention relates to a pharmaceutical composition for prevention or treatment of liver cancer, comprising, as an active ingredient, modified RT-LET7 or modified RT-LET7 with which a liver cell-targeted moiety is combined, and compared to a conventional RT-LET7, which is antisense microRNA (AS-miRNA) for inhibiting Let-7i-5p, the modified RT-LET7 according to the present invention increases the inhibition of Let-7i-5p expression, increases the inhibition of liver cancer cell growth, increases TSP1 expression, and increases phagocytosis activity of macrophages. In addition, the liver cell-targeted moiety is combined with the modified RT-LET7 so as to improve delivery liver cancer cells and remarkably improve the effectiveness of liver cancer treatment, and thus the modified RT-LET7 can be effectively used in a pharmaceutical composition for prevention or treatment of liver cancer, or as a checkpoint inhibitor for prevention or treatment of CD47-positive liver cancer.

Composition for prevention or treatment of liver cancer, comprising modified rt-let7 as active ingredient

The present invention relates to a pharmaceutical composition for prevention or treatment of liver cancer, comprising, as an active ingredient, modified RT-LET7 or modified RT-LET7 with which a liver cell-targeted moiety is combined, and compared to a conventional RT-LET7, which is antisense microRNA (AS-miRNA) for inhibiting Let-7i-5p, the modified RT-LET7 according to the present invention increases the inhibition of Let-7i-5p expression, increases the inhibition of liver cancer cell growth, increases TSP1 expression, and increases phagocytosis activity of macrophages. In addition, the liver cell-targeted moiety is combined with the modified RT-LET7 so as to improve delivery liver cancer cells and remarkably improve the effectiveness of liver cancer treatment, and thus the modified RT-LET7 can be effectively used in a pharmaceutical composition for prevention or treatment of liver cancer, or as a checkpoint inhibitor for prevention or treatment of CD47-positive liver cancer.

Ultralight hydrogen production reactor comprising high-efficiency composite

The present invention relates to a hydrogen production reactor comprising a high-efficiency composite having a high thermal conductivity and an antioxidant property. Specifically, the hydrogen production reactor comprises: a first region in which the combustion reaction of a fuel occurs; a second region in which a hydrogen extraction reaction occurs; a metal substrate allowing division into the first region and the second region; and a coating layer which comprises boron nitride (BN) and which is formed on at least one surface of the metal substrate, wherein the heat generated in the first region is transferred to the second region through the metal substrate.

Multi-layered electrode for fuel cell and method for producing the same

Disclosed are a multi-layered electrode for fuel cell and a method for producing the same, wherein the electrode can be operated under non-humidification and normal temperature, the flooding of the electrode catalyst layer can be prevented, and the long-term operation characteristic can be increased due to the prevention of the loss of the electrode catalyst layer.

Ammonia membrane reactor comprising a composite membrane

The present specification discloses a membrane reactor comprising a reaction region; a permeate region; and a composite membrane disposed at a boundary of the reaction region and the permeate region, wherein the reaction region comprises a bed filled with a catalyst for dehydrogenation reaction, wherein the composite membrane comprises a support layer including a metal with a body-centered-cubic (BCC) crystal structure, and a catalyst layer including a palladium (Pd) or a palladium alloy formed onto the support layer, wherein ammonia (NH3) is supplied to the reaction region, the ammonia is converted into hydrogen (H2) by the dehydrogenation reaction in the presence of the catalyst for dehydrogenation reaction, and the hydrogen permeates the composite membrane and is emitted from the membrane reactor through the permeate region.

Method for preparing membrane-electrode assembly, membrane-electrode assembly prepared therefrom and fuel cell comprising the same

Provided is a method for producing a membrane-electrode assembly for a full cell, comprising: preparing catalyst ink slurry from a catalyst, an ion conductive polymer and a solvent; applying the catalyst ink slurry onto a support film, followed by vacuum drying; and transferring the support film to either surface or both surfaces of an electrolyte membrane to form a catalyst layer on the electrolyte membrane. A membrane-electrode assembly obtained by the method and a fuel cell including the membrane-electrode assembly are also provided. The method provides a membrane-electrode assembly having increased porosity, and thus the membrane-electrode assembly shows significantly reduced mass transfer resistance. Therefore, the output density and the quality of the fuel cell including the membrane-electrode assembly prepared therefrom can be improved.

Dehydrogenation reaction apparatus

A dehydrogenation reaction apparatus includes: an aqueous add solution tank that stores an aqueous acid solution; a dehydrogenation reactor that stores a chemical hydride and selectively receives the aqueous acid solution stored in the aqueous add solution tank; and a heat control device. The heat control device is disposed inside or outside the dehydrogenation reactor and controls an internal temperature of the dehydrogenation reactor.

Dehydrogenation reaction device and control method thereof

A dehydrogenation reaction device is disclosed. The device includes a chemical hydride storage unit including a chemical hydride storage tank, a reaction unit including an acid aqueous solution storage tank, and a dehydrogenation reactor for generating hydrogen by reacting a chemical hydride with an acid aqueous solution. The device further includes a hydrogen storage unit including a hydrogen storage tank for storing the hydrogen produced in the dehydrogenation reactor, and a recovery unit for recovering the product produced in the dehydrogenation reactor.

Dehydrogenation reaction device and system having the same

An operating method is disclosed for a dehydrogenation reaction system. The method includes providing a system having: an acid aqueous solution tank including an acid aqueous solution; a dehydrogenation reactor including a chemical hydride of a solid state and receiving an acid aqueous solution from the acid aqueous solution tank to react the chemical hydride with the acid aqueous solution to generate hydrogen; and a fuel cell stack receiving hydrogen generated from the dehydrogenation reactor to be reacted with oxygen to generate water and simultaneously to generate electrical energy. The method also includes recycling the water generated from the fuel cell stack to one or all of the acid aqueous solution tank, the dehydrogenation reactor, and a separate water tank. The acid is formic acid and, in in the dehydrogenation reactor, the temperature is in a range of 10° C. to 400° C. and the pressure is in a range of 1 bar to 100 bar.

Method for preparing membrane-electrode assembly, membrane-electrode assembly prepared therefrom and fuel cell comprising the same

Provided is a method for producing a membrane-electrode assembly for a full cell, comprising: preparing catalyst ink slurry from a catalyst, an ion conductive polymer and a solvent; applying the catalyst ink slurry onto a support film, followed by vacuum drying; and transferring the support film to either surface or both surfaces of an electrolyte membrane to form a catalyst layer on the electrolyte membrane. A membrane-electrode assembly obtained by the method and a fuel cell including the membrane-electrode assembly are also provided. The method provides a membrane-electrode assembly having increased porosity, and thus the membrane-electrode assembly shows significantly reduced mass transfer resistance. Therefore, the output density and the quality of the fuel cell including the membrane-electrode assembly prepared therefrom can be improved.

Composition for prevention or treatment of liver cancer, comprising modified rt-let7 as active ingredient

The present invention relates to a pharmaceutical composition for prevention or treatment of liver cancer, comprising, as an active ingredient, modified RT-LET7 or modified RT-LET7 with which a liver cell-targeted moiety is combined. Compared to a conventional RT-LET7, which is antisense microRNA (AS-miRNA) for inhibiting Let-7i-5p, the modified RT-LET7 according to the present invention has effects of increasing the inhibition of Let-7i-5p expression, increasing the inhibition of liver cancer cell growth, increasing TSP1 expression, and increasing phagocytosis activity of macrophages. In addition, the liver cell-targeted moiety is combined with the modified RT-LET7 so as to improve delivery ability to liver cancer cells and remarkably improve the effectiveness of liver cancer treatment, and thus the modified RT-LET7 can be effectively used in a pharmaceutical composition for prevention or treatment of liver cancer, or as a checkpoint inhibitor for prevention or treatment of CD47-positive liver cancer.

Catalyst for a dehydrogenation reaction, a manufacturing method thereof, and a hydrogen production method using same

A catalyst for a dehydrogenation reaction includes a carrier including Al 2 O 3 having a theta (θ) phase, an active metal supported on the carrier and including a noble metal, and an auxiliary metal supported on the carrier and different from the active metal.

Catalyst in which catalytic metal is supported on hexagonal support, and preparation method therefor

The present invention relates to a catalyst in which a catalytic metal is supported on a support including a single-crystalline hexagonal material, and a preparation method therefor, wherein the catalyst can be effectively used in ammonia dehydrogenation or ammonia synthesis.

Vorrichtung für tragbare Brennstoffzellen und Betriebsverfahren hierfür

Vorrichtung für eine tragbare Brennstoffzelle, wobei die Vorrichtung umfasst: eine Brennstoffzelle, die eine Elementarzelle oder einen Stapel der Elementarzellen umfasst; eine Sekundärbatterie, die ladbar und entladbar ist; und ein Leistungsmanagementsystem (PMS) mit einem Gleichstromumrichter, wobei das PMS von der Brennstoffzelle erzeugte Leistung empfängt und die Leistung einem Gerät zuführt, das mit der Sekundärbatterie verbunden ist, um Leistung zu empfangen oder zuzuführen, Leistung für den Betrieb der Brennstoffzelle zuzuführen, die Spannung der Brennstoffzelle zu messen und die Leistungszufuhr anhand der Messung zu regulieren, wobei dem PMS bei einem Stabilisierungszustand Leistung von der Brennstoffzelle so zugeführt wird, dass die gemessene Spannung von der Brennstoffzelle nach dem Anfangsbetrieb der Brennstoffzelle einen konstanten Zustand erreicht.

Polymer electrolyte membrane for medium and high temperature, preparation method thereof and high temperature polymer electrolyte membrane fuel cell comprising the same

The present disclosure relates to a polymer electrolyte membrane for medium and high temperature, a preparation method thereof and a high-temperature polymer electrolyte membrane fuel cell including the same, more particularly to a technology of preparing a composite membrane including an inorganic phosphate nanofiber incorporated into a phosphoric acid-doped polybenzimidazole (PBI) polymer membrane by adding an inorganic precursor capable of forming a nanofiber in a phosphoric acid solution when preparing phosphoric acid-doped polybenzimidazole and using the same as a high-temperature polymer electrolyte membrane which is thermally stable even at high temperatures of 200-300° C. without degradation of phosphoric acid and has high ion conductivity.

Membrane-electrode assembly including guard gasket

Disclosed is a membrane-electrode assembly (MEA) that prevents an electrolyte membrane from being damaged upon the fabrication of a single cell or a stack of fuel cells. The MEA further includes a guard gasket interposed between conventional gaskets, wherein the guard gasket has a thickness corresponding to 70%-95% of the thickness of the electrolyte membrane. The MEA ensures mechanical protection of the electrolyte membrane, and thus prevents the electrolyte membrane from being damaged by an excessive binding pressure upon the fabrication of a single cell or a stack of fuel cells. Furthermore, the contact resistance between the electrolyte membrane and the catalyst layer and the contact resistance between the gas diffusion layer and the catalyst layer can be minimized, thereby improving the quality of a fuel cell.

Reversible fuel cell oxygen electrode, reversibli fuel cell including the same, and method for preparing the same

Disclosed are a reversible fuel cell oxygen electrode in which IrO2 is electrodeposited and formed on a porous carbon material and platinum is applied thereon to form a porous platinum layer, a reversible fuel cell including the same, and a method for preparing the same. According to the corresponding reversible fuel cell oxygen electrode, as the loading amounts of IrO2 and platinum used in the reversible fuel cell oxygen electrode can be lowered, it is possible to exhibit excellent reversible fuel cell performances (excellent fuel cell performance and water electrolysis performance) by improving the mass transport of water and oxygen while being capable of reducing the loading amounts of IrO2 and platinum. Further, it is possible to exhibit a good activity of a catalyst when the present disclosure is applied to a reversible fuel cell oxygen electrode and to reduce corrosion of carbon.

MEA for fuel cell, method for preparing the same and fuel cell using the MEA

Provided is an MEA for fuel cell containing hygroscopic inorganic material such as TEOS (tetraethylorthosilicate), zirconium propoxide or titanium t-butoxide.

Catalyst in which catalytic metal is supported on hexagonal support, and preparation method therefor

Catalyst in which catalytic metal is supported on hexagonal support, and preparation method therefor

The present invention relates to a catalyst in which a catalytic metal is supported on a support including a single-crystalline hexagonal material, and a preparation method therefor, wherein the catalyst can be effectively used in ammonia dehydrogenation or ammonia synthesis.

Catalyst in which catalytic metal is supported on hexagonal support, and preparation method therefor

The present invention relates to a catalyst in which a catalytic metal is supported on a support including a single-crystalline hexagonal material, and a preparation method therefor, wherein the catalyst can be effectively used in ammonia dehydrogenation or ammonia synthesis.

Hybrid dehydrogenation reaction system

A hybrid dehydrogenation reaction system includes: an acid aqueous solution tank having an acid aqueous solution; an exothermic dehydrogenation reactor including a chemical hydride of a solid state and receiving the acid aqueous solution from the acid aqueous solution tank for an exothermic dehydrogenation reaction of the chemical hydride and the acid aqueous solution to generate hydrogen; an LOHC tank including a liquid organic hydrogen carrier (LOHC); and an endothermic dehydrogenation reactor receiving the liquid organic hydrogen carrier from the LOHC tank and generating hydrogen through an endothermic dehydrogenation reaction of the liquid organic hydrogen carrier by using heat generated from the exothermic dehydrogenation reactor.

Composition for preventing or treating cancer comprising msh2 or msh6 inhibitor as active ingredient

The present invention relates to a composition for preventing or treating cancer, comprising an MSH2 or MSH6 inhibitor as an active ingredient. The MSH2 or MSH6 inhibitor according to the present invention was confirmed to: inhibit tumor cell growth and proliferation in various carcinoma cells, including hepatocellular carcinoma, and in particular, inhibit migration, invasion, and tumorigenic activity in hepatocellular carcinoma; and increase DNMT1 expression and reduce KLF4 expression, when MSH2 or MSH6 expression was increased, and thus can be used as a pharmaceutical composition for the prevention and treatment of cancer.