| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a manufacturing method for a gas diffusion layer for a solid polymer electrolyte fuel cell advantageous for preventing pores of the gas diffusion layer from being excessively collapsed or the flow passage cross section of a gas passage of a separator from becoming excessively small. <P>SOLUTION: A process preparing a liquid substance consisting essentially of a conductive material such as a carbon fiber having conductivity and an extinction material which can be extinguished, a sheet formation process forming a sheet consisting essentially of the conductive material and the extinction material by separating a solid content from the liquid substance, and a pore formation process forming the pores in the sheet by extinguishing the extinction material contained in the sheet are carried out in order. The liquid substance contains a solid resin (thermosetting resin etc.), and the resin contained in the liquid substance is supported by the sheet. Therefore, the gas diffusion layer 100 formed with the sheet can be made properly hard. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
