Fuel cell unit

H - Electricity – 01 – M

Patent

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Details

H01M 8/10 (2006.01) B05B 1/14 (2006.01) H01M 8/02 (2006.01) H01M 8/04 (2006.01) H01M 8/24 (2006.01) H01M 8/12 (2006.01)

Patent

CA 2314907

The invention relates to a fuel cell unit for producing a continuous current by converting chemical energy, using an electrolyte which supports an anode and a cathode separately from each other. Said fuel cell unit has a self- supporting hollow microfibre-matrix electrolyte (2). Said hollow microfibres have a wall thickness of approximately 0.01 to 50 µm and an equivalent diameter of approximately 0.05 to 280 µm. The hollow microfibres are arranged in the form of bonded filament or filament yarn fabrics, in which case the ends (3) of the hollow microfibre are bonded in such a way that they are dimensionally stable and are left at least partially free to allow access to the lumen of the hollow fibre, or bonded staple fibre or staple fibre yarn fabrics, in which case the hollow microfibre ends (3) are bound in such a way that they are dimensionally stable. The invention also relates to a fuel cell stack (1) made up of several fuel cell units of this type, and to the use of a fuel cell unit of this type.

L'invention concerne une unité de pile à combustible servant à produire du courant continu par conversion d'énergie chimique, avec un électrolyte qui porte une anode et une cathode séparément l'une de l'autre. L'unité de pile à combustible présente un électrolyte matriciel à microfibres creuses (2). Lesdites microfibres creuses font entre 0,01 et 50 µm d'épaisseur et ont un diamètre équivalent d'environ 0,05 à 280 µm. Les microfibres creuses se présentent soit sous forme de structures à base de filaments ou de fils continus, les extrémités (3) des microfibres creuses étant reliées de manière indéformable et mises à nues au moins partiellement pour permettre l'accès au lumen des fibres creuses ou sont disposées sous forme de structures de fibres empilées ou de fils de fibres empilées, les extrémités des microfibres creuses (3) étant liées de manière indéformable. L'invention concerne en outre un empilement de piles à combustible (1) composé de plusieurs unités de piles à combustible de ce type, ainsi que l'utilisation d'une unité de pile à combustible de ce type.

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