第一作者：Zhaoyan Li

通讯作者：Junli Xu

合写作者：Yu Zhang, Zhaoshun Liu, Hongbin Sun, Zhongning Shi

发表刊物：International Journal of Hydrogen Energy

卷号：51

影响因子：8.1

DOI码：10.1016/j.ijhydene.2023.07.095

所属单位：Department of Chemistry, Tsinghua University

教研室：物理化学

刊物所在地：ENGLAND

摘要：Poor conductivity and low catalytic activity of NiFe layered double hydroxide (LDH) limit its application as an electrocatalyst for oxygen evolution reaction (OER). In this work, heterostructure along with oxygen vacancy and amorphous structure, which is available to the enhancement of catalytic activity were introduced in the surface of NiFe-LDH by Co and W codoping using hydrothermal method. The overpotential of OER at 50 mA cm-2 is decreased from 304 mV of NiFe-LDH to 263 mV of W0.5Co0.5@NiFe-LDH. Moreover, the existence of W6+ species in LDH can significantly improve the electrochemical kinetics of OER as well as the stability of catalyst. This work provides a new strategy to induce active sites in the surface as well as inhibit the formation of defects in the bulk so as to enhance the catalytic activity and still maintain the stability nature of catalysts.(c) 2023 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.

关键字：Oxygen evolution reaction, Layered double hydroxides, CodopingOxygen vacancy, Amorphous/crystalline structure

论文编号：WOS:001139816700001

学科门类：理学

一级学科：化学

页面范围：895-903

ISSN号：0360-3199

是否译文：否