Patent ID: 9090982
Filing Date: 2015-07-28
Classification: C23C,C25B

Abstract:
1. An electrode for hydrogen evolution comprising: a metal substrate; and a superficial catalytic coating provided on the metal substrate and containing crystallites of ruthenium in the form of metal or of oxide, an intermediate coating comprising RuO2 interposed between the metal substrate and the catalytic coating, wherein the crystallites have a size of 1 to 10 nm and a standard deviation not higher than 0.5 nm, the crystallites size and standard deviation are as obtained by repeating the measurement in different zones of said superficial catalytic coating, and the catalytic coating has a specific loading of ruthenium of 1 to 5 g/m2 and the intermediate coating has a specific loading of ruthenium of 5 to 12 g/m2.