Issue 11, 2021

Intrinsic activity modulation and structural design of NiFe alloy catalysts for an efficient oxygen evolution reaction

Abstract

NiFe alloy catalysts have received increasing attention due to their low cost, easy availability, and excellent oxygen evolution reaction (OER) catalytic activity. Although it is considered that the co-existence of Ni and Fe is essential for the high catalytic activity, the identification of active sites and the mechanism of OER in NiFe alloy catalysts have been controversial for a long time. This review focuses on the catalytic centers of NiFe alloys and the related mechanism in the alkaline water oxidation process from the perspective of crystal structure/composition modulation and structural design. Briefly, amorphous structures, metastable phases, heteroatom doping and in situ formation of oxyhydroxides are encouraged to optimize the chemical configurations of active sites toward intrinsically boosted OER kinetics. Furthermore, the construction of dual-metal single atoms, specific nanostructures, carbon material supports and composite structures are introduced to increase the abundance of active sites and promote mass transportation. Finally, a perspective on the future development of NiFe alloy electrocatalysts is offered. The overall aim of this review is to shed light on the exploration of novel electrocatalysts in the field of energy.

Graphical abstract: Intrinsic activity modulation and structural design of NiFe alloy catalysts for an efficient oxygen evolution reaction

Article information

Article type
Perspective
Submitted
08 Dec. 2020
Accepted
08 Febr. 2021
First published
11 Febr. 2021
This article is Open Access

All publication charges for this article have been paid for by the Royal Society of Chemistry
Creative Commons BY-NC license

Chem. Sci., 2021,12, 3818-3835

Intrinsic activity modulation and structural design of NiFe alloy catalysts for an efficient oxygen evolution reaction

Q. Kang, D. Lai, W. Tang, Q. Lu and F. Gao, Chem. Sci., 2021, 12, 3818 DOI: 10.1039/D0SC06716D

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