Strong metal-support interaction of Ru-NPs/WC_x boosts alkaline hydrogen evolution and oxidation for alkaline fuel cells and electrolyzers.

ABSTRACT: Developing Pt-free catalysts for alkaline hydrogen oxidation reaction (HOR) for anion-exchange membrane fuel cells (AEMFCs) is still a big problem. Herein, we report a WC_x supported Ru nanoparticles (Ru-NPs/WC_x) electrocatalyst. The Ru-NPs/WC_x-based H₂-air AEMFC not only delivers in the mass activity (MA) (3.13 mg_PGM^-1@0.65 V) and specific peak power density (2.55 W mg_PGM^-1) at low total metal loadings, but also exhibits more than 210 h durability. Besides, the Ru-NPs/WC_x-based AEMWE only needs 1.73 V to reach an industrial current density of 1 A cm^-2. Density functional theory (DFT) calculations uncover that the strong interaction of Ru-NPs and WC_x support results in th

SUBMITTER: Sun P 

PROVIDER: S-EPMC12660761 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature