| 摘要 |
PROBLEM TO BE SOLVED: To excellently maintain the electric conductivity of a separator, to reduce the cost, and to enable long-term use by improving corrosion resistance by stacking cells through a metallic separator provided with a composite plated layer containing a water repellent material and metal on the surface. SOLUTION: A pair of electrodes having a catalytic reaction layer are arranged by sandwiching a solid high polymer electrolyte film for selectively transporting a hydrogen ion to form a cell, fuel gas containing hydrogen is supplied to one electrode, and oxidizing agent gas containing oxygen is supplied to the other electrode. The cell is stacked for plural stages through a metallic separator to obtain a solid high polymer fuel cell. The metallic separator is constituted by forming a groove of a gas flow passage by machining a stainless steel plate by a press and also forming a composite plated layer containing a water repellent material and metal. For example, the water repellent material is desirably pitch fluoride and graphite fluoride having electron conductivity, and the metal is desirably gold, silver, nickel or chrome. |
