| 摘要 |
PURPOSE:To provide a polymer electrolyte fuel cell capable of controlling water absorbing/removing capability to enhance stability by modifying surface structure characteristics of carbon particles which are a catalyst supporter on a fuel electrode side and an air electrode side. CONSTITUTION:A fuel cell consists of an electrolyte film made of a solid polymer, a fuel electrode and an air electrode placed on both sides of the electrolyte film, and the fuel electrode and the air electrode have a catalyst layer arranged so as to come in contact with the electrolyte film surface respectively. Carbon particles in the catalyst layer of the air electrode are supported with catalysts, then the surfaces of carbon particles are treated so that their hydrophilic natures are decreased, and carbon particles in the catalyst layer of the fuel electrode are previously given hydrophilic functional groups, then supported with catalysts. The fuel cell with less output drop in high current density region and high performance can be provided. |
