| 摘要 |
PURPOSE:To decrease contact resistance and simplify tightening structure by forming a densified layer by filling a conductive mass in a current collecting part which is in contact with a separator, as each electrode of a unit cell in a cell obtained stacking mutually unit cells and separators. CONSTITUTION:A unit cell comprising a carbon fiber electrode 1 having a gas flowing path on one side and a catalytic layer 4 on the other side, and a matrix layer 2 which is placed on the electrode 1 is stacked with a separator 3 mutually. Conductive graphite powder 5 having smaller particle size than pore size of the electrode 1 is filled in fine space of carbon fiber on the surface of a rib 6 which forms a current collector of the electrode 1 in contact with the separator 3, and a densified layer is formed by increasing the density on the surface. By this process, a conductive mass is filled inside the electrode and the contact resistance between a unit cell and a separator is decreased, and fastening structure is simplified. |
