Increasing Electrocatalytic Oxygen Evolution Efficiency through Cobalt-Induced Intrastructural Enhancement and Electronic Structure Modulation.

ABSTRACT: Electrolytic water splitting using surplus electricity represents one of the most cost-effective and promising strategies for hydrogen production. The high overpotential of the oxygen-evolution reaction (OER) caused by the multi-electron transfer process with a high chemical energy barrier, however, limits its competitiveness. Here, a highly active and stable OER electrocatalyst was designed through a cobalt-induced intrastructural enhancement strategy combined with suitable electronic structure modulation. A carved carbon nanobox was embedded with tri-metal phosphide from a uniform Ni-Co-Fe Prussian blue analogue (PBA) nanocube by sequential NH₃  ⋅ H₂ O etching and thermal phosphorization. The sample exhibited an OER activity in an alkaline medium, reaching a current

SUBMITTER: Zhang X 

PROVIDER: S-EPMC7821219 | biostudies-literature | 2021 Jan

REPOSITORIES: biostudies-literature