| 摘要 |
PROBLEM TO BE SOLVED: To provide a material for a fuel cell, in particular, a separator therefor capable of being easily thinned, having excellent mechanical strength, gas impermeability, electrical conductivity, heat resistance, corrosion resistance and thermal conductivity, and capable of being easily manufactured with a high yield. SOLUTION: This separator for the fuel cell having excellent mechanical strength, electrical conductivity, heat resistance, corrosion resistance and thermal conductivity due to high graphitization rate and having high gas impermeability as compared with a normal graphite material can be provided by composing it of a carbonaceous structural body having a high graphitization rate obtained by heating and carbonating polyimide film. The separator can easily be manufactured with a high yield and particularly easily be thinned by heating, carbonating and integrating a layered product of polyimide film. In addition, the need of post-processing for forming a gas passage groove is obviated by heating, carbonating and integrating the layered product laminated by including the polyimide film from which a part to become the gas passage groove is previously removed. |
