Separator for fuel cell using a metal plate coated with titanium nitride, method for manufacturing the same, and polymer electrolyte membrane fuel cell comprising the separator

摘要

Disclosed is a separator for a fuel cell made of a metal plate comprising both a cooling water flow field and a gas flow field formed on each surface thereof, wherein the separator consists of the joined metal plates for the cooling water flow fields to face each other, the surfaces of the joined metal plates are coated with TiN, a polymer electrolyte membrane fuel cell comprising the separator and a method for manufacturing the separator.