Electrosynthesis of hierarchical NiLa-layered double hydroxide electrode for efficient oxygen evolution reaction

作     者：Shan Jiang Yunke Liu Wenfu Xie Mingfei Shao Shan Jiang;Yunke Liu;Wenfu Xie;Mingfei Shao

作者机构：State Key Laboratory of Chemical Resource Engineering Beijing University of Chemical Technology 

出 版 物：《Journal of Energy Chemistry》 (能源化学（英文版）)

年 卷 期：2019年第28卷第6期

页      面：125-129页

核心收录：

学科分类：07[理学] 0702[理学-物理学] 

基　　金：supported by the National Natural Science Foundation of China (21601011 and 21521005) the National Key Research and Development Programme (2017YFA0206804) the Fundamental Research Funds for the Central Universities (buctrc201506 and buctylkxj01) 

主　　题：Layered double hydroxides Oxygen evolution reaction Lanthanides Electrosynthesis 

摘      要：Oxygen evolution reaction(OER) is a key process for electrochemical water splitting due to its intrinsic large overpotential. Recently, layered double hydroxides(LDHs), especially Ni Fe-LDH, have been regarded as highly performed electrocatalysts for OER in alkaline condition. Here we first present a new class of Ni La-LDH electrocatalyst synthesized by an electrochemical process for efficient water splitting. The as-prepared NiL a-LDH nanosheet arrays(NSAs) give remarkable electrochemical activity and durability under alkaline environments, with a low overpotential of 209 mV for OER to deliver a current density of 10 mA cm^-2, surpassing most of previous reported LDHs eletrocatalysts. The presence of NiLa-LDH in this work extends the studies about LDHs-based electrocatalysts, which will benefit the development of electrochemical energy storage and conversion systems.