Solid oxide fuel cell stack assembly having tapered...

Details Solid oxide fuel cell stack assembly having tapered... Solid oxide fuel cell stack assembly having tapered...

H - Electricity

01

M

H01M 8/10 (2006.01) H01M 2/00 (2006.01) H01M 2/08 (2006.01)

Patent

CA 2499922

An electrochemical system adapted to operate between a fuel cell mode, an electrolysis mode and a mode alternating between an electrolysis mode and a fuel cell mode, also referred to as an energy storage mode, operating on a fuel gas mixture (220) and an oxygen-containing gas mixture (220), and having modified fuel diffusion layers (204) and oxygen diffusion layers (214). The tapered fuel diffusion layers (204) is progressively thicker from its outermost edge to its innermost edge. The tapered oxygen diffusion layer (214) is progressively thicker from its innermost edge to its outermost edge.

L'invention concerne un système électrochimique conçu pour fonctionner entre un mode pile à combustible, un mode électrolyse et un mode alternatif entre le mode pile à combustible et le mode électrolyse, appelé également mode de stockage d'énergie. Ce système, qui fonctionne au moyen d'un mélange de gaz combustibles (220) et d'un mélange de gaz contenant de l'oxygène (220), comporte des couches de diffusion de combustible (204) modifiées et des couches de diffusion d'oxygène (214) modifiées. La couche tronconique de diffusion de combustible (204) gagne en épaisseur de son bord extérieur vers son bord intérieur. La couche tronconique de diffusion d'oxygène (214) gagne en épaisseur de son bord intérieur vers son bord extérieur.

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