Mesoporous WC_x Films with NiO-Protected Surface: Highly Active Electrocatalysts for the Alkaline Oxygen Evolution Reaction.

ABSTRACT: Metal carbides are promising materials for electrocatalytic reactions such as water electrolysis. However, for application in catalysis for the oxygen evolution reaction (OER), protection against oxidative corrosion, a high surface area with facile electrolyte access, and control over the exposed active surface sites are highly desirable. This study concerns a new method for the synthesis of porous tungsten carbide films with template-controlled porosity that are surface-modified with thin layers of nickel oxide (NiO) to obtain active and stable OER catalysts. The method relies on the synthesis of soft-templated mesoporous tungsten oxide (mp. WO_x ) films, a pseudomorphic transformation into mesoporous tungsten carbide (mp. WC_x ), and a subsequent shape-conformal depos

SUBMITTER: Frisch M 

PROVIDER: S-EPMC8596595 | biostudies-literature | 2021 Nov

REPOSITORIES: biostudies-literature