Patent ID: 7094489
Filing Date: 2006-08-22
Classification: H01M,Y02E,Y10T

Abstract:
1. A method for producing a membrane electrode assembly generating electric current by electric chemical reaction comprising the steps of: (a) forming a plurality of protuberances on one side of supporting bodies; (b) forming a catalyst layer on one side of said supporting bodies on which said plurality of protuberances are formed; (c) interposing a polymer electrolyte membrane between said supporting bodies; (d) aligning said supporting bodies for said protuberances to engage each other; and (e) hot-pressing said supporting bodies; wherein a three phase boundary corresponding to said protuberances is formed; wherein said (d) step is performed by inserting aligning members into pre-formed aligning halls; and wherein said aligning member has a plurality of protrusions different in size and height.