Core-Shell Structured NiFeSn@NiFe (Oxy)Hydroxide Nanospheres from an Electrochemical Strategy for Electrocatalytic Oxygen Evolution Reaction.

ABSTRACT: Efficient electrocatalysts for the oxygen evolution reaction (OER) are highly desirable because of the intrinsically sluggish kinetics of OER. Herein, core-shell structured nanospheres of NiFe _x Sn@NiFe (oxy)hydroxide (denoted as NiFe _x Sn-A) are prepared as active OER catalysts by a facile electrochemical strategy, which includes electrodeposition of NiFe _x Sn alloy nanospheres on carbon cloth (CC) and following anodization. The alloy core of NiFe _x Sn could promote charge transfer, and the amorphous shell of NiFe (oxy)hydroxide is defect-rich and nanoporous due to the selective electrochemical etching of Sn in alkaline medium. The optimized catalyst of NiFe_0.5Sn-A displays a remarkable OER performance with

SUBMITTER: Chen M 

PROVIDER: S-EPMC7237859 | biostudies-literature | 2020 May

REPOSITORIES: biostudies-literature