PH-Universal Water Splitting Catalyst: Ru-Ni Nanosheet Assemblies.

ABSTRACT: Although electrochemical water splitting is an effective and green approach to produce oxygen and hydrogen, the realization of efficient bifunctional catalysts that are stable in variable electrolytes is still a significant challenge. Herein, we report a three-dimensional hierarchical assembly structure composed of an ultrathin Ru shell and a Ru-Ni alloy core as a catalyst functioning under universal pH conditions. Compared with the typical Ir/C-Pt/C system, superior catalytic performances and excellent durability of the overall water splitting under universal pH have been demonstrated. The introduction of Ni downshifts the d-band center of the Ru-Ni electrocatalysts, modulating the surface electronic environment. Density functional theory results reveal that the mutually restrictive d-ban

SUBMITTER: Yang J 

PROVIDER: S-EPMC6348166 | biostudies-literature | 2019 Jan

REPOSITORIES: biostudies-literature