| 摘要 |
PURPOSE:To reduce heat loss and make a fuel cell compact and lightweighted by combining a matrix and a ribbed electrode to form a unit cell using a molded one-side ribbed separator that is obtained by compressing and molding expanded graphite. CONSTITUTION:A unit cell is formed by arranging an electrode 3 made of porous substances to which a catalyst is added and a ribbed electrode 19 that forms fluid fuel circulating path 7 with ribs 4, on both side of a matrix 1 impregnated with electrolyte and serving as a border, and compressing and molding on its both sides, the expanded graphite that is obtained by suddenly increasing the temperature of the graphite treated with acid or the like, then arranging a one-side ribbed separator 20 that forms fluid oxidizer circulating paths 8 with ribs 5. Then a fuel cell is formed by laminating a number of suck unit cells. As a result, the separator 20 with sufficient conductivity can be obtained only by compression and molding process and the compactness and light weight of the fuel cell are made possible and then the retention capacity for the electrolyte can be improved. |
