Membrane electrode assembly and method for producing same,...

Details Membrane electrode assembly and method for producing same,... Membrane electrode assembly and method for producing same,...

H - Electricity

01

M

H01M 4/86 (2006.01) H01M 4/88 (2006.01) H01M 8/02 (2006.01) H01M 8/10 (2006.01)

Patent

CA 2368740

The membrane electrode assembly comprising a pair of opposing electrodes each having a catalytic layer, and a polymer electrolyte membrane sandwiched by the electrodes, part of the catalytic layers being projecting into the polymer electrolyte membrane is produced by (1) coating a catalytic layer of one electrode with a solution of a polymer electrolyte in an organic solvent, (2) coating the resultant polymer electrolyte membrane with a catalyst slurry for the other electrode, while the amount of the organic solvent remaining in the polymer electrolyte membrane is 5-20 weight % based on the polymer electrolyte membrane, and (3) after drying, hot-pressing the polymer electrolyte membrane and the electrodes formed on both sides of the membrane.

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