Patent ID: 7452624
Filing Date: 2008-11-18
Classification: H01M,Y02E

Abstract:
1. A polymer electrolyte fuel cell comprising: a hydrogen ion conductive polymer electrolyte membrane; a pair of electrodes sandwiching said hydrogen ion conductive polymer electrolyte membrane therebetween; and a pair of conductive separator plates including means for supplying and discharging a fuel gas to and from one of said electrodes and supplying and discharging an oxidant gas to and from the other electrode, wherein said conductive separator plates comprise molded plates of a composition comprising a binder, conductive carbon particles whose average particle diameter is not less than 50 μm and not more than ⅓ of a thickness of a thinnest portion of said conductive separator plate, and carbon nanotubes; wherein said carbon nanotubes have a diameter of 10 to 30 nm and a length of 1 to 10 μm; and wherein said binder is an acid-resisting resin.