| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for imparting a hydrophilic property to a fuel battery separator having a metal base, and on its surface, a conductive layer of carbon superior in corrosion resistance and conductivity.SOLUTION: A method for a hydrophilic treatment of a fuel battery separator comprises the step of performing a thermal treatment on a fuel battery separator having a graphite-containing conductive layer on its surface at 150-500°C under an atmosphere with an oxygen density of 1% or more. As a result of the thermal treatment like this, oxygen atoms are bound to carbon atoms of part of crystalline graphite, and a hydrophilic property is imparted to the fuel battery separator while keeping the conductivity. |
