Enhanced Proton Spillover at Pt-Cluster/NiO Interface Reduces the Acidic-Alkaline Hydrogen Evolution Activity Gap.

ABSTRACT: The sluggish hydrogen evolution reaction (HER) kinetics in alkaline media, primarily attributed to the additional water dissociation step, has led to a significant activity gap between acidic and alkaline conditions. Metal-supported electrocatalysts leveraging hydrogen spillover have garnered significant attention due to sufficiently utilized reaction sites; however, designing active catalysts remains a formidable challenge, primarily due to the limited understanding of the specific regulatory mechanisms governing proton spillover. Herein, a facile strategy is reported for the fabrication of Pt nanoclusters (Pt_NC) on oxygen-defect-rich NiO nanowires (Pt_NC-D-NiO). The electrocatalyst demonstrates excellent intrinsic and mass-normalized HER activity and remarkable long-

SUBMITTER: Kumar A 

PROVIDER: S-EPMC12853402 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature