| 摘要 |
PROBLEM TO BE SOLVED: To obtain a high quality fuel cell separator having small ion eluation, high molding workability and high dimensional stability, and to obtain a highly efficient solid polymer type fuel cell using the fuel cell separator having small decrease of a running output, a stable output, and an improved running efficiency. SOLUTION: In the fuel cell separator which is molded from a composite for fuel cell separators having an electric conduction material and a binder as principal components, the fuel cell separator has an electrical conductivity of water of less than 50 μS/cm after heating pure water of 305 mL at 90 deg.C for 500 hours into which a test piece of 3.5 g cut down from the above fuel cell separator is put-in. |
