Patent ID: 8852827

Claim:
A method of manufacturing a metallic bipolar plate for fuel cells, comprising: (a) preparing a metal plate as a matrix of the metallic bipolar plate; (b) degreasing and pickling a surface of the metal plate for pretreatment; (c) coating a composition on the pickled surface of the metal plate, the composition comprising a binder resin, carbon particles and a solvent, and a mixing ratio of the carbon particles and the binder resin being 1:1˜6:1 in terms of weight; and (d) drying the surface of the metal plate, on which the composition is coated, at a temperature less than a thermal decomposition temperature of the binder resin and greater than or equal to a boiling point of the solvent to form a coating layer on the surface of the metal plate, the coating layer having the carbon particles dispersed in a matrix of the binder resin.