一种刷状CuO-CoO核壳纳米阵列：用于全海水分解的高效双功能电催化剂。

A brush-like CuO-CoO core-shell nanoarray: an efficient bifunctional electrocatalyst for overall seawater splitting.

作者信息

Xie Lisi, Liu Qian, He Xun, Luo Yongsong, Zheng Dongdong, Sun Shengjun, Farouk Asmaa, Hamdy Mohamed S, Liu Jun, Kong Qingquan, Sun Xuping

机构信息

Institute for Advanced Study, Chengdu University, Chengdu 610106, Sichuan, China.

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

出版信息

Chem Commun (Camb). 2023 Aug 22;59(68):10303-10306. doi: 10.1039/d3cc02359a.

DOI:10.1039/d3cc02359a

PMID:37548248

Abstract

Herein, a brush-like CuO-CoO core-shell nanoarray on copper foam (CuO-CoO/CF) can achieve efficient oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) performance in alkaline seawater electrolyte. This CuO-CoO/CF shows overpotentials as low as 315 and 295 mV at 100 mA cm for the OER and HER, respectively. Moreover, it could also be operated at 1.82 V with 100 mA cm in a two-electrode electrolyzer and exhibits strong stability for at least 50 hours of electrolysis. The excellent performance and hierarchical structure advantages of CuO-CoO/CF provide new ideas for designing efficient seawater splitting electrocatalysts.

摘要

在此，泡沫铜上的刷状CuO-CoO核壳纳米阵列（CuO-CoO/CF）在碱性海水电解质中可实现高效的析氧反应（OER）和析氢反应（HER）性能。这种CuO-CoO/CF在100 mA cm²的电流密度下，OER和HER的过电位分别低至315和295 mV。此外，在两电极电解槽中，它在100 mA cm²的电流密度下也能在1.82 V的电压下运行，并且在至少50小时的电解过程中表现出很强的稳定性。CuO-CoO/CF的优异性能和分级结构优势为设计高效的海水分解电催化剂提供了新思路。