Patent ID: 7229564
Filing Date: 2007-06-12
Classification: C23F,H01M,Y02E,Y02P

Abstract:
1. A method for fabricating a bipolar plate of a DMFC (direct methanol fuel cell) comprising: providing a substrate consisting of a releasable carrier having a first side and a second side, a release layer on the first side, and a single metal foil merely disposed on the release layer, in which the release layer functions to bind the releasable carrier and the metal foil together; forming a photoresist pattern defining an electrode plate area on the metal foil; performing an etching process, using the photoresist pattern as a hard mask, to etch the metal foil, thereby forming the electrode plate area on the release layer, wherein the etching process stops on the release layer, and wherein the electrode plate area comprises a plurality of openings extending through thickness of the metal foil, which allows air or fuel to contact with a membrane electrode assembly (MEA) to be mounted on the electrode plate area; removing the photoresist pattern; disposing a protective layer on the electrode plate area; after disposing the protective layer, laminating the substrate on a bonding sheet encompassing the MEA; and simultaneously ripping off the releasable carrier and the release layer, leaving the electrode plate area inlaid in the bonding sheet and in contact with the MEA.