Patent ID: 6350540
Filing Date: 2002-02-26
Classification: H01M,Y02E

Abstract:
A fuel cell comprising:a fuel cell unit including an anode electrode composed of a first gas diffusion layer provided with a first electrode catalyst arranged on a first surface of an electrolyte, and a cathode electrode composed of a second gas diffusion layer provided with a second electrode catalyst arranged on a second surface of said electrolyte; and first and second separators provided opposingly on both sides of said fuel cell unit, wherein: said first separator includes a first separator flow passage for supplying fuel gas to said anode electrode; said second separator includes a second separator flow passage for supplying oxygen-containing gas to said cathode electrode; said first gas diffusion layer is provided with a first gas diffusion layer flow passage formed on at least a surface portion opposing to said first separator for allowing said fuel gas to flow therethrough; said second gas diffusion layer is provided with a second gas diffusion layer flow passage formed on at least a surface portion opposing to said second separator for allowing said oxygen-containing gas to flow therethrough; at least one of said first and said second separator flow passages is provided with a plurality of independent and continuous separator flow passage grooves; and said first and second gas diffusion layer flow passages have the same shape as that of at least one of said first and said second separator flow passage, and are provided with a plurality of independent and continuous gas diffusion layer flow passage grooves opposed to said separator flow passage grooves.