Pre-coating of metal bipolar plate, method of forming the same, metal bipolar plate produced by using the same and method of producing the same

Abstract

A pre-coating of a metal bipolar plate and a method of forming the same are provided. The pre-coating of the metal bipolar plate is used to form on a surface of a metal substrate. The pre-coating of the metal bipolar plate includes an intermediate layer disposed on the metal substrate, in which the intermediate layer includes transition metal carbide; and a surface conductive layer disposed on the intermediate layer, in which the surface conductive layer includes a graphite layer, and a thickness of the surface conductive layer is in a range of 0.2 μm to 1.0 μm. The pre-coating of the metal bipolar plate can have improved corrosion resistance and electrical conductivity, thereby being applied to the metal bipolar plate and the method of producing the same.

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