Patent ID: 7074514
Filing Date: 2006-07-11
Classification: H01M,Y02E

Abstract:
1. A separator of a fuel cell having a recessed gas path through which flows a gas containing an active material, the separator being produced by a method comprising: providing an electrically conductive member which later serves as a separator, and a processing electrode having electrode projections shaped complementarily to a pattern shape of said gas path; placing said electrically conductive member so as to face said electrode projections of said processing electrode; supplying current to an area between said electrically conductive member and the processing electrode, in a state in which an electrolytic solution is interposed between said electrically conductive member and the electrode projections of said processing electrode; dissolving said electrically conductive member through electrolytic processing to form said gas path as recesses in said electrically conductive member, wherein a bottom surface of said recesses possess a surface roughness Rz of not larger than 1 μm by said electrolytic processing.