Fuel cell stack

Details Fuel cell stack Fuel cell stack

H - Electricity

01

M

H01M 8/24 (2006.01) C25B 9/20 (2006.01) H01M 8/02 (2006.01)

Patent

CA 2422926

The invention relates to an fuel cell stack, comprising alternately arranged membrane-electrode units (3) and separator plates (2, 2a) for the introduction and removal of the reactant and oxidative fluid, whereby the separator plate (2, 2a) has a surface structure and the opposing face has the negative surface structure, by means of a stamping process. According to the invention, on stacking the separator plates (2, 2a), the surface structure of a separator plate (2) is opposite the corresponding negative surface structure of the adjacent separator plate (2a).

L'invention concerne un empilement de cellules électrochimiques comprenant des unités d'électrodes à membrane alternées (3) et des plaques de séparation (2, 2a) pour l'admission et l'évacuation d'un fluide réactif et oxydant. Par une procédure de frappe, la première face de la plaque de séparation (2, 2a) présente une structure de surface et l'autre face une structure de surface inverse. Selon cette invention, lors de l'empilage des plaques de séparation (2, 2a), une structure de surface d'une plaque de séparation (2) se trouve à l'opposé d'une structure de surface inverse correspondante de la plaque de séparation adjacente (2a).

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