CuO@CoFe层状双氢氧化物核壳异质结构作为温和碱性条件下高效的析氧电催化剂

CuO@CoFe Layered Double Hydroxide Core-Shell Heterostructure as an Efficient Water Oxidation Electrocatalyst under Mild Alkaline Conditions.

作者信息

Wang Yuting, Wang Ting, Zhang Rong, Liu Qian, Luo Yongsong, Cui Guanwei, Lu Siyu, Wang Jiahai, Ma Yongjun, Sun Xuping

机构信息

State Key Laboratory of Environmental-Friendly Energy Materials, School of Materials Science and Engineering, Southwest University of Science and Technology, Mianyang 621010, Sichuan, China.

Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 610054, Sichuan, China.

出版信息

Inorg Chem. 2020 Jul 20;59(14):9491-9495. doi: 10.1021/acs.inorgchem.0c01927. Epub 2020 Jul 7.

DOI:10.1021/acs.inorgchem.0c01927

PMID:32633962

Abstract

Designing hierarchical electrocatalysts with superior water oxidation performance is highly desirable for the production of renewable chemical fuels. Here, we report the development of a CuO@CoFe layered double hydroxide core-shell heterostructure supported on Cu foil (CuO@CoFe-LDH/CF) as a highly active catalyst electrode for water oxidation under mild alkaline conditions. In a 0.2 M carbonate buffer solution (pH 11), it only needs a small overpotential of 213 mV to achieve 10 mA cm, outperforming all reported electrocatalysts at comparable testing conditions. It also shows outstanding long-term durability.

摘要

设计具有卓越析氧性能的分级电催化剂对于可再生化学燃料的生产极具吸引力。在此，我们报道了一种负载在铜箔上的CuO@CoFe层状双氢氧化物核壳异质结构（CuO@CoFe-LDH/CF）的开发，作为一种在温和碱性条件下用于析氧的高活性催化剂电极。在0.2 M碳酸盐缓冲溶液（pH 11）中，仅需213 mV的小过电位即可实现10 mA cm，在可比测试条件下优于所有已报道的电催化剂。它还表现出出色的长期耐久性。