Electrolyte electrode assembly and method of producing the same

Details Electrolyte electrode assembly and method of producing the same Electrolyte electrode assembly and method of producing the same

H - Electricity

01

M

H01M 8/02 (2006.01) H01M 8/12 (2006.01)

Patent

CA 2560769

A unit cell (10) of a fuel cell is formed by sandwiching an electrolyte electrode assembly (12) between a pair of separators (6a, 6b). The separators (6a, 6b) include bosses (7a, 7b) protruding toward an anode (3) or a cathode (4). On one surface of the electrolyte electrode assembly (12) facing the separator (6b), the cathode (4) is provided. Then, an electron diffusion layer (14) is provided on the cathode (4). Electrons which reach the electron diffusion layer (14) through the bosses (7b) are diffused over the entire area of the electron diffusion layer (14). By the electrons, reduction of oxygen in the oxygen-containing gas which has passed through a second passage between the bosses (7b) occurs. As a result, oxide ions (O2-) are generated.

Une cellule unitaire (10) de cellule électrochimique est formée en prenant en sandwich un ensemble électrode électrolytique (12) entre une paire de séparateurs (6a, 6b). Les séparateurs (6a,6b) comprennent des bosses (7a, 7b) saillant vers une anode (3) ou une cathode (4). La cathode (4) est prévue à la surface de l~ensemble électrode électrolytique (12) faisant face au séparateur (6b). Ensuite, une couche de diffusion d'électrons (14) est prévue sur la cathode (4). Les électrons qui atteignent la couche de diffusion d'électrons (14) à travers les bosses (7b) sont diffusés dans toute la superficie de la couche de diffusion d'électrons (14). Grâce aux électrons, on observe la réduction d~oxygène dans le gaz contenant de l'oxygène ayant traversé un second passage entre les bosses (7b). Résultat, des ions d~oxyde (O2-) sont générés.

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