Surface Boron Modulation on Cobalt Oxide Nanocrystals for Electrochemical Oxygen Evolution Reaction.

ABSTRACT: Herein, we show that coupling boron with cobalt oxide tunes its structure and significantly boost its electrocatalytic performance for the oxygen evolution reaction (OER). Through a simple precipitation and thermal treatment process, a series of Co-B oxides with tunable morphologies and textural parameters were prepared. Detailed structural analysis supported first the formation of an disordered and partially amorphous material with nanosized Co₃ BO₅ and/or Co₂ B₂ O₆ being present on the local atomic scale. The boron modulation resulted in a superior OER reactivity by delivering a large current and an overpotential of 338 mV to reach a current density of 10 mA cm^-2 in 1 M KOH electrolyte. Identical location transmission elec

SUBMITTER: Yu M 

PROVIDER: S-EPMC9826365 | biostudies-literature | 2022 Oct

REPOSITORIES: biostudies-literature