Patent ID: 8993197
Filing Date: 2015-03-31
Classification: B82Y,C01B,H01M,Y02E,Y02P

Abstract:
1. A bipolar plate for a fuel cell, comprising: a substrate formed of stainless steel; an oriented amorphous carbon film formed at least on a surface of the substrate facing an electrode, and containing carbon as a main component, 3 to 20 at. % of nitrogen, and more than 0 at. % and not more than 20 at. % of hydrogen, and when the total amount of the carbon is taken as 100 at. %, the amount of carbon having an sp a mixed layer generated in a boundary of the substrate and the oriented amorphous carbon film and containing at least one kind of constituent atoms of each of the substrate and the oriented amorphous carbon film; and a plurality of projections protruding from the mixed layer into the oriented amorphous carbon film and having a mean length of 10 to 150 nm.