A Little Nickel Goes a Long Way: Ni Incorporation into Rh₂P for Stable Bifunctional Electrocatalytic Water Splitting in Acidic Media.

ABSTRACT: In acidic media, many transition-metal phosphides are reported to be stable catalysts for the hydrogen evolution reaction (HER) but typically exhibit poor stability toward the corresponding oxygen evolution reaction (OER). A notable exception appears to be Rh₂P/C nanoparticles, reported to be active and stable toward both the HER and OER. Previously, we investigated base-metal-substituted Rh₂P, specifically Co_2-xRh_xP and Ni_2-xRh_xP, for HER and OER as a means to reduce the noble-metal content and tune the reactivity for these disparate reactions. In alkaline media, the Rh-rich phases were found to be most active for the HER, while base-metal-rich phases were found to be the most active for the OER.

SUBMITTER: Batugedara TN 

PROVIDER: S-EPMC10347692 | biostudies-literature | 2023 Jul

REPOSITORIES: biostudies-literature