Patent ID: 6835488
Filing Date: 2004-12-28
Classification: H01M,Y02E

Abstract:
A fuel cell comprising:a) two electrodes; and b) an electrolyte sheet sandwiched between said electrodes to form an electrode/electrolyte structure, thereby defining first and second interfaces between said electrolyte sheet and said electrodes, at least one of said interfaces having three-dimensional features in a prescribed pattern, wherein said prescribed pattern is selected to direct a flow of a reactant from an inlet region of said fuel cell to an outlet region of said fuel cell and wherein said prescribed pattern comprises a plurality of discrete channels for directing said reactant flow therethrough, and wherein said electrode/electrolyte structure has a substantially planar peripheral portion surrounding said three-dimensional features of said at least one of said interfaces, said fuel cell further comprising a sealing plate for contacting said substantially planar peripheral portion of said electrode/electrolyte structure to seal said channels.