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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Применить Всего найдено 15. Отображено 15.
01-06-2011 дата публикации

Method of manufacturing an ultra-microelectrode

Номер: CN0101685091B
Принадлежит:

The present invention discloses a method of manufacturing an ultra-microelectrode and is characterized by sealing the top end of a capillary tube by adopting a flame fusing method, plating a dielectric film by adopting a cyclic voltammetry method for the first time and obtaining the top end of an ultra-microelectrode by using an electric shock method. Comparing with the traditional technology, the present invention discloses an ultra-microelectrode having a top end with a minimum diameter of 300-1000nm, having a uniform compact uneasy-falling dielectric film, and the size is controllable, thesensitivity is high, the steady-state current is reduced from 10[-7]A to 10[-9]A, the ultra-microelectrode can be tested in an organic system, and thus, application fields of the ultra-microelectrodeis widened greatly. The method has characteristics of simple manufacturing and low cost, and the manufactured ultra-microelectrode has a perfect electrochemical performance and can be used for singlecell ...

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23-06-2023 дата публикации

Extraction method of complex dielectric constant of carbon composite powder material

Номер: CN116304478A
Принадлежит:

The invention relates to the technical field of electromagnetic property testing of materials, and particularly discloses a method for extracting a complex dielectric constant of a carbon composite powder material. The complex dielectric constant of the carbon composite powder material is extracted through the steps of building a test system, loading a sample, obtaining an S parameter of a tested material, calculating the complex dielectric constant through the S parameter and carrying out de-embedding calculation on the complex dielectric constant, so that the tedious process of taking the sample as a solid machinable state in the prior art is improved; after the carbon composite powder material clamp is installed, the material in a 7mm coaxial line is measured by using a transmission reflection method to invert the dielectric constant of the tested material, so that pollution of powder to a clamp transmission line is avoided, and the test efficiency of the complex dielectric constant ...

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16-05-2023 дата публикации

Preparation method for high-performance multi-element oxide electrode material

Номер: CN116130616A
Принадлежит:

The invention provides a preparation method for a high-performance multi-element oxide material, and belongs to the technical field of preparation of lithium ion battery positive electrode materials. The method comprises the following steps: uniformly mixing a spherical LiNixCoyAlzO2 multi-element oxide material (x is greater than or equal to 0.80 and greater than or equal to 0.96, y is greater than or equal to 0.02 and greater than or equal to 0.15, and z is greater than or equal to 0.02 and greater than or equal to 0.05) with a single-crystal LiNixCoyAlzO2 multi-element oxide material (x is greater than or equal to 0.80 and greater than or equal to 0.96, y is greater than or equal to 0.02 and greater than or equal to 0.15, and z is greater than or equal to 0.02 and greater than or equal to 0.05) in a mixer, so that the compaction density of the prepared multi-element oxide electrode material can reach 3.80 g/cm < 3 > or above, and the first specific discharge capacity can reach 210 mAh ...

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31-03-2010 дата публикации

Method of manufacturing an ultra-microelectrode

Номер: CN0101685091A
Принадлежит:

The present invention discloses a method of manufacturing an ultra-microelectrode and is characterized by sealing the top end of a capillary tube by adopting a flame fusing method, plating a dielectric film by adopting a cyclic voltammetry method for the first time and obtaining the top end of an ultra-microelectrode by using an electric shock method. Comparing with the traditional technology, thepresent invention discloses an ultra-microelectrode having a top end with a minimum diameter of 300-1000nm, having a uniform compact uneasy-falling dielectric film, and the size is controllable, thesensitivity is high, the steady-state current is reduced from 10[-7]A to 10[-9]A, the ultra-microelectrode can be tested in an organic system, and thus, application fields of the ultra-microelectrodeis widened greatly. The method has characteristics of simple manufacturing and low cost, and the manufactured ultra-microelectrode has a perfect electrochemical performance and can be used for singlecell ...

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07-10-2015 дата публикации

Reduce device of lithium ion batteries cathode materials magnetism foreign matter content

Номер: CN0204696194U
Принадлежит:

The utility model discloses a reduce device of lithium ion batteries cathode materials magnetism foreign matter content. The device includes mainly that high -order pulp stirred tank (1), the liquid medium that communicate in proper order through the pipeline remove magnetism foreign matter equipment (2), low level pulp stirred tank (3), high -order pulp stirred tank (1) on be equipped with lithium ion batteries cathode materials entry (7) and liquid medium enter the mouth (8), high -order pulp stirred tank is provided with agitating unit, low level pulp stirred tank (3) is through the liquid medium entry (8) of the high -order pulp stirred tank of circulating pump (4) intercommunication, the low reaches that liquid medium removed magnetism foreign matter equipment (2) still are provided with centrifugal separator (5). The device of the utility model is simple in structure, low cost, convenient operation can high -efficient reduce magnetism foreign matter content among the lithium ion batteries ...

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11-03-2009 дата публикации

Lifting bracket for electrochemistry experiment

Номер: CN0101380602A
Принадлежит:

The invention provides a liftable test stand used for electrochemistry experiments, which is formed by an iron stand and a transverse lever. The end part of the transverse lever of the iron stank is provided with a clamp type polyfluortetraethylene beaker cover, the transverse lever as a bolt and the clamp type polyfluortetraethylene beaker cover as a nut are connected with each other; and the breaker cover is opened with 2 to 5mm of a hole. The liftable test stand overcomes the defect that a rubber plug is not convenient for fixing an electrode in an electrolytic cell in electrochemistry experiments, uses the polyfluortetraethylene material as the breaker cover to prevent the breaker cover from being eroded by solution, solves the problems of rubber plugs manufactured by hands in different types, and can conveniently and quickly carry out electrochemistry detection.

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23-12-2009 дата публикации

Symmetric tailed sulfhydryl porphyrin with two carbon chains (C9 and C12) in different lengths

Номер: CN0101607962A
Принадлежит:

The invention relates to symmetric tailed sulfhydryl porphyrin with two carbon chains (C9 and C12) in different lengths, prepared by bromizing, esterifying and hydrolyzing acrinyl porphyrin at the beginning of hydroxy porphyrin. The synthesized symmetric tailed sulfhydryl porphyrin has a certain practical value for realizing multi-layered self assembly, two-dimensional molecular devices and photoelectric conversion.

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12-08-2015 дата публикации

Method and device for lowering content of magnetic foreign bodies in cathode material for lithium ion cell

Номер: CN104835944A
Принадлежит:

The invention discloses a method and a device for lowering content of magnetic foreign bodies in a cathode material for a lithium ion cell. The device mainly comprises a high altitude slurrying agitation tank (1), a liquid medium magnetic foreign body removing device (2) and a low altitude slurrying agitation tank (3), which are sequentially connected through pipelines. The high altitude slurrying agitation tank (1) is provided with a lithium ion cell cathode material inlet (7) and a liquid medium inlet (8). The high altitude slurrying agitation tank is provided with an agitation device. The low altitude slurrying agitation tank (3) is connected with the liquid medium inlet (8) of the high altitude slurrying agitation tank through a circulating pump (4). The downstream section of the liquid medium magnetic foreign body removing device (2) is also provided with a centrifugal machine (5). The device has a simple structure and low cost, is convenient to operate, can lower the content of the ...

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18-11-2009 дата публикации

Electrochemical detection method for dihydrogen phosphate ions in water system

Номер: CN0101581688A
Принадлежит:

The invention provides an electrochemical detection method for dihydrogen phosphate ions in a water system, which comprises the steps: inserting a gold electrode the surface of which is self-assembled with a porphyrin monolayer, a reference electrode and a counter electrode into an electrochemical detection cell of potassium hexafluorophosphate electrolyte solution containing red potassium prussiate/potassium ferrocyanide probe molecules, performing scanning by an electrochemical workstation, and obtaining a charge transfer resistance value (Rct) of the self-assembled porphyrin monolayer; and then jointly inserting the gold electrode modified by porphyrin, the reference electrode and the counter electrode into the electrochemical detection cell of the electrolyte solution which contains an object to be detected, namely the dihydrogen phosphate ions, performing scanning by the electrochemical workstation, and obtaining a charge transfer resistance value (Rct) of the self-assembled porphyrin ...

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27-07-2011 дата публикации

Electrolytic cell for quartz crystal microbalance / electrochemical quartz crystal microbalance

Номер: CN0101303323B
Принадлежит:

The present invention provides an electrolytic cell for quartz crystal microbalance/electrochemistry quartz crystal microbalance. The inside wall of the cell body of the electrolytic cell is provided with reference electrode slots; the cell body wall is embedded with platinum wire counter electrodes contacted with the inner space of the cell; the lateral surface of the cell body is provided with a baffle communicated with the inner space of the cell, rubber seal rings, quartz crystal vibration pieces and rubber seal rings are provided in the cell body and in the middle part of the lateral baffle, two inlet and outlet wires of the quartz crystal vibration piece penetrate from the narrow slit between the lateral baffle and the cell wall, and then the lateral baffle is fixed with the cell wall through screws; the bottom inside the cell is provided with stirring magnetons; the top of the cell body is provided with seal plastic rings and a top cover board, and the cover board is respectively ...

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26-05-2023 дата публикации

Preparation method of high-performance lithium battery positive electrode material

Номер: CN116169259A
Принадлежит:

The invention provides a preparation method of a high-voltage lithium battery positive electrode material, and belongs to the technical field of preparation of lithium ion battery positive electrode materials. The method comprises the following steps: uniformly mixing large and small nano magnesium lithium silicate coated lithium cobalt oxide with different particle sizes and F <->-doped single-crystal nickel cobalt lithium manganate, wherein the particle size D50 of the large nano magnesium lithium silicate coated lithium cobalt oxide is more than or equal to 17 microns and less than or equal to 19 microns, and the particle size D50 of the F <->-doped single-crystal nickel cobalt lithium manganate is more than or equal to 17 microns and less than or equal to 19 microns; the particle size D50 of the small-particle F-doped single crystal lithium nickel cobalt manganate is more than or equal to 1.5 microns and less than or equal to 3.5 microns, and the mass ratio of the large-particle-size ...

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10-03-2010 дата публикации

Tailed tetrasulfhydryl porphyrin with carbon chain length of 6

Номер: CN0101665494A
Принадлежит:

The invention relates to tailed tetrasulfhydryl porphyrin with the carbon chain length of 6, which has a structural formula shown on the right. A preparation method comprises the steps of starting from tetrahydroxyl porphyrin and performing bromination, esterification and hydrolysis in turn to prepare the tailed tetrasulfhydryl porphyrin with the carbon chain length of 6. The tetrasulfhydryl porphyrin synthesized in the invention is of certain practical value to the aspects of study on electron transfer, molecular catalysis, photoinduced molecular switches, molecular rectifiers and layer-by-layer assembly.

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30-06-2023 дата публикации

Graphene-based ternary composite wave-absorbing agent and wave-absorbing material

Номер: CN116355589A
Принадлежит:

The invention discloses a graphene-based ternary composite wave-absorbing agent and a wave-absorbing material. The graphene-based ternary composite wave-absorbing agent comprises graphene, ferroferric oxide and aluminum nitride, the mass ratio of the graphene to the aluminum nitride is (2-8): 1; the mass ratio of the ferroferric oxide to the aluminum nitride is (0.3-2): 1; the wave-absorbing agent and the wave-absorbing material are simple in preparation process, convenient to operate and free of pollution in the production process; the graphene-based ternary composite wave-absorbing agent and the wave-absorbing material with high reflection loss are prepared by optimizing preparation means such as the morphology and the particle size of ferroferric oxide, regulating the content ratio of ferroferric oxide, aluminum nitride and graphene, regulating the ratio of a binder to the wave-absorbing agent and the like. The coating thickness of the wave-absorbing material can be effectively and remarkably ...

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12-11-2008 дата публикации

Electrolytic cell for quartz crystal microbalance / electrochemical quartz crystal microbalance

Номер: CN0101303323A
Принадлежит:

The present invention provides an electrolytic cell for quartz crystal microbalance/electrochemistry quartz crystal microbalance. The inside wall of the cell body of the electrolytic cell is provided with reference electrode slots; the cell body wall is embedded with platinum wire counter electrodes contacted with the inner space of the cell; the lateral surface of the cell body is provided with a baffle communicated with the inner space of the cell, rubber seal rings, quartz crystal vibration pieces and rubber seal rings are provided in the cell body and in the middle part of the lateral baffle, two inlet and outlet wires of the quartz crystal vibration piece penetrate from the narrow slit between the lateral baffle and the cell wall, and then the lateral baffle is fixed with the cell wall through screws; the bottom inside the cell is provided with stirring magnetons; the top of the cell body is provided with seal plastic rings and a top cover board, and the cover board is respectively ...

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27-06-2012 дата публикации

Electrochemical detection method for dihydrogen phosphate ions in water system

Номер: CN0101581688B
Принадлежит:

The invention provides an electrochemical detection method for dihydrogen phosphate ions in a water system, which comprises the steps: inserting a gold electrode the surface of which is self-assembledwith a porphyrin monolayer, a reference electrode and a counter electrode into an electrochemical detection cell of potassium hexafluorophosphate electrolyte solution containing red potassium prussiate/potassium ferrocyanide probe molecules, performing scanning by an electrochemical workstation, and obtaining a charge transfer resistance value (Rct) of the self-assembled porphyrin monolayer; and then jointly inserting the gold electrode modified by porphyrin, the reference electrode and the counter electrode into the electrochemical detection cell of the electrolyte solution which contains an object to be detected, namely the dihydrogen phosphate ions, performing scanning by the electrochemical workstation, and obtaining a charge transfer resistance value (Rct) of the self-assembled porphyrin ...

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