GAS DIFFUSION ELECTRODE AND USE THEREOF

A gas diffusion electrode may be provided comprising an electron conducting layer with a first side and an opposite second side, wherein the first side is provided with a microstructuring, wherein the gas diffusion electrode additionally has a hydrophobic membrane with a first side and an opposite second side, wherein the second side of the membrane is arranged on the first side of the electron conducting layer. A battery or an accumulator or an electrolyser or a galvanic cell may be provided with a gas diffusion electrode of this type. 1. A gas diffusion electrode with an electron conducting layer , comprising a first side and an opposite second side , wherein the first side is provided with a micro-structuring , wherein the gas diffusion electrode further comprises a hydrophobic membrane with a first side and an opposite second side , with the second side of the membrane being arranged on the first side of the electron conducting layer.2. The gas diffusion electrode according to claim 1 , wherein the membrane comprises poly-tetrafluoroethylene or is made therefrom claim 1 , and/or that the membrane has a thickness of approximately 10 μn to approximately 100 μm and/or that the membrane is embodied in a gas-permeable fashion.3. The gas diffusion electrode according to claim 1 , wherein the electron conducting layer comprises titanium and/or nickel and/or gold and/or silver and/or molybdenum and/or tungsten and/or a stainless steel alloy or is made therefrom.4. The gas diffusion electrode according to claim 1 , wherein the micro-structuring can be generated by radiation with laser beams and/or that the micro-structuring has individual structures with an aspect ratio from approximately 1:3 to 3:1 and/or that the micro-structuring has individual structures with their diameter at the base ranging from approximately 10 μm to approximately 30 μm.5. The gas diffusion electrode according to claim 1 , wherein the micro-structuring is partially embedded in the hydrophobic ...

GAS DIFFUSION ELECTRODE AND USE THEREOF

A gas diffusion electrode may be provided comprising an electron conducting layer with a first side and an opposite second side, wherein the first side is provided with a microstructuring, wherein the gas diffusion electrode additionally has a hydrophobic membrane with a first side and an opposite second side, wherein the second side of the membrane is arranged on the first side of the electron conducting layer. A battery or an accumulator or an electrolyser or a galvanic cell may be provided with a gas diffusion electrode of this type. 1. A method comprising:forming a micro-structuring on an electron conducting layer by irradiating the electron conducting layer with laser radiation, the electron conducting layer having a first side and an opposite second side, the micro-structuring formed on the first side of the electron conducting layer, wherein the micro-structuring comprises a plurality of cone-shaped projections pointing away from the first side of the electron conducting layer, wherein each of the cone-shaped projections has a base diameter, a height, and an aspect ratio of the base diameter to the height within a range from approximately 1:3 to 3:1, and wherein the cone-shaped projections each has a base with a diameter in a range from approximately 10 μm to approximately 30 μm and a tip having a diameter from approximately 1 μm to approximately 5 μm; andforming a gas diffusion electrode by bringing the hydrophilic first side of the electron conducting layer and a hydrophobic membrane in contact with each other, the hydrophobic membrane having a first side and an opposite second side, wherein the second side of the membrane is arranged on the first side of the electron conducting layer, wherein the electron conducting layer comprises a plurality of electrolyte channels each of which extends from the first side of the electron conducting layer to the second side of the electron conducting layer.2. The method of claim 1 , wherein the membrane comprises poly- ...

TWO-TUBE MOTION HYDRAULIC SHOCK ABSORBER

AMORTISSEUR COMPORTANT UN CYLINDRE FERME 1 DIVISE EN DEUX CHAMBRES DE TRAVAIL 1.1, 1.2, CELLE DU COTE PISTON 1.1 COMMUNIQUANT AVEC UNE CHAMBRE D'EQUILIBRE 2.1 ET AVEC L'AUTRE CHAMBRE 1.2, CHAQUE FOIS PAR DEUX VANNES (NON-RETOURETRANGLEMENT 910, 1112) RESPECTIVEMENT DANS LE FOND DU CYLINDRE 1 ET DANS LE PISTON 8. LA CHAMBRE DU CYLINDRE 1 COMMUNIQUE AVEC UNE OUVERTURE D'ETRANGLEMENT 13 DE L'ENVELOPPE QUI EST FERMABLE PAR UN TIROIR 14 SUR TIGE DE PISTON 5 OU PAR LE PISTON 8, AVEC EFFET INFERIEUR A CELUI DE CHAQUE VANNE D'ETRANGLEMENT 10, 12, ET, DANS LA POSITION MOYENNE DE L'AMORTISSEUR, LADITE OUVERTURE 13 RESTE, NON FERMEE, A MI-DISTANCE ENTRE PISTON 8 ET TIROIR 14. EXEMPLE D'APPLICATION: SUSPENSION DE VEHICULES A SUSTENTATION MAGNETIQUE.

Gas diffusion electrode and use thereof

Heat exchanger and method for its production and use

Die Erfindung betrifft einen Wärmeübertrager (1) mit einem Grundkörper (10), dadurch gekennzeichnet, dass zumindest eine erste Teilfläche (101) des Grundkörpers (10) mit einer Oberflächenmodifikation (20) versehen ist, welche in zumindest einer Raumrichtung eine Mehrzahl von Erhebungen aufweist, welche eine Höhe von etwa 0,5 µm bis etwa 50 µm und einen Abstand von etwa 0,2 µm bis etwa 10 µm aufweisen. Weiterhin betrifft die Erfindung Verfahren zur Herstellung und Verwendung dieses Wärmeübertragers. The invention relates to a heat exchanger (1) with a basic body (10), characterized in that at least a first partial surface (101) of the basic body (10) is provided with a surface modification (20) which has a plurality of elevations in at least one spatial direction which have a height of about 0.5 μm to about 50 μm and a distance of about 0.2 μm to about 10 μm. Furthermore, the invention relates to processes for the preparation and use of this heat exchanger.

Continuous flow reactor for reacting an educt

The invention relates to a continuous flow reactor having a wall which delimits a channel, wherein at least one sub-area is arranged in the channel that has microstructuring which includes individual structures, the diameter of which on a base is between about 10 μm to about 100 μm. The invention further relates to methods for reacting a gaseous or liquid educt under the action of a catalyst.