Sealing structure for sealing separator plates of fuel cell...

Details Sealing structure for sealing separator plates of fuel cell... Sealing structure for sealing separator plates of fuel cell...

H - Electricity

01

M

H01M 8/02 (2006.01) H01M 2/08 (2006.01) H01M 4/94 (2006.01) H01M 8/10 (2006.01) H01M 8/24 (2006.01)

Patent

CA 2473870

A sealing structure for sealing a proton exchange membrane fuel cell is disclosed. The fuel cell includes a membrane electrode assembly, an anode plate, and a cathode plate. Both of the plates are formed with a peripheral groove and an extended groove at a circumferential portion thereof, and silicon rubber is applied to the peripheral groove and the extended groove. Before the silicon rubber is cured, the anode plate, the membrane electrode assembly and the cathode plate are stacked and compressed with a predetermined compression pressure, such that the silicon rubber at the peripheral groove of the anode plate binds correspondingly to the silicon rubber at the peripheral groove of the cathode plate to form a tight sealing at the circumferential portions between the anode plate and the cathode plate, and the membrane electrode assembly is tightly sandwiched between the silicon rubber at the extended groove of the anode plate and the silicon rubber at the extended groove of the cathode plate to form a tight sealing around the ports between the anode plate and cathode plate.

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