A hierarchical CuO@NiCo layered double hydroxide core–shell nanoarray as an efficient electrocatalyst for the oxygen evolution reaction

Yang Cao; Ting Wang; Xue Li; Longcheng Zhang; Yonglan Luo; Fang Zhang; Abdullah M. Asiri; Jianming Hu; Qian Liu; Xuping Sun

doi:10.1039/D1QI00124H

A hierarchical CuO@NiCo layered double hydroxide core–shell nanoarray as an efficient electrocatalyst for the oxygen evolution reaction†

Yang Cao,‡^a Ting Wang,

‡^b Xue Li,^a Longcheng Zhang,^b Yonglan Luo,

^c Fang Zhang,^d Abdullah M. Asiri,

^e Jianming Hu,*^a Qian Liu

*^c and Xuping Sun

*^b

Author affiliations

* Corresponding authors

^a School of Physics and Electrical Engineering, Chongqing Normal University, Chongqing 401331, China
E-mail: hujianming@cqnu.edu.cn

^b Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 610054, Sichuan, China
E-mail: xpsun@uestc.edu.cn

^c Institute for Advanced Study, Chengdu University, Chengdu 610106, Sichuan, China
E-mail: liuqian@uestc.edu.cn

^d National Engineering Research Center for Nanotechnology, No. 28 East Jiang Chuan Road, Shanghai 200241, China

^e Chemistry Department, Faculty of Science & Center of Excellence for Advanced Materials Research, King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia

Abstract

Developing hierarchical electrocatalysts for the oxygen evolution reaction (OER) is of great importance for electrochemical hydrogen production. Here, we describe the development of a hierarchical CuO@NiCo layered double hydroxide core–shell nanoarray on copper foil (CuO@NiCo LDH/CF) as a 3D OER electrocatalyst. When tested in 1.0 M KOH, such CuO@NiCo LDH/CF offers superior catalytic activity with a geometrical catalytic current density of 20 mA cm⁻² at an overpotential of only 256 mV. It also shows strong long-term electrochemical durability to retain its activity for at least 24 h.

This article is part of the themed collection: Energy Frontiers: Electrochemistry and Electrochemical Engineering

Inorganic Chemistry Frontiers

A hierarchical CuO@NiCo layered double hydroxide core–shell nanoarray as an efficient electrocatalyst for the oxygen evolution reaction†

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A hierarchical CuO@NiCo layered double hydroxide core–shell nanoarray as an efficient electrocatalyst for the oxygen evolution reaction

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