Bipolar plates for electrochemical cells

Details Bipolar plates for electrochemical cells Bipolar plates for electrochemical cells

H - Electricity

01

M

H01M 8/02 (2006.01) C25B 9/00 (2006.01) C25B 9/04 (2006.01) C25B 9/18 (2006.01) H01M 8/04 (2006.01) H01M 8/24 (2006.01)

Patent

CA 2332807

A bipolar separator plate for two electrochemical cells connected in series, the plate having two layers of a porous electronically conductive material having positioned therebetween a solid layer of a polymeric material having dispersed therein at least 1 percent by weight of a conductive filler, wherein the plate has an area resistivity of less than 1 ohm-cm2, and wherein the solid layer has a permeability of less than 50 µDarcy (µD).

La présente invention concerne une plaque séparatrice bipolaire destinée à deux cellules électrochimiques reliées en série, la plaque possédant deux couches d'un matériau poreux conducteur électronique entre lesquelles se trouve une couche solide de matériau polymérique contenant sous forme dispersée au moins 1 pour-cent en poids d'une charge conductrice. Cette plaque présente une résistivité de surface inférieure à 1 ohm-cm?2¿, et la couche solide présente une perméabilité inférieure à 50 µDarcy (µD).

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