N‑Doped Graphene‑Decorated NiCo Alloy Coupled with Mesoporous NiCoMoO Nano‑sheet Heterojunction for Enhanced Water Electrolysis Activity at High Current Density

作     者：Guangfu Qian Jinli Chen Tianqi Yu Lin Luo Shibin Yin Guangfu Qian;Jinli Chen;Tianqi Yu;Lin Luo;Shibin Yin

作者机构：College of Chemistry and Chemical EngineeringMOE Key Laboratory of New Processing Technology for Nonferrous Metals and MaterialsState Key Laboratory of Processing for Non‑Ferrous Metal and Featured MaterialsGuangxi University100 Daxue RoadNanning 530004P.R.China 

出 版 物：《Nano-Micro Letters》 (纳微快报（英文版）)

年 卷 期：2021年第13卷第5期

页      面：77-89页

核心收录：

学科分类：081702[工学-化学工艺] 0808[工学-电气工程] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 0817[工学-化学工程与技术] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0702[理学-物理学] 

基　　金：supported by the National Natural Science Foundation of China(21872040) the Hundred Talents Program of Guangxi Universities the Excellent Scholars and Innovation Team of Guangxi Universities。 

主　　题：N-doped graphene-decorated NiCo alloy Catalyst Mesoporous nano-sheet Water electrolysis High current density 

摘      要：Developing highly effective and stable non-noble metalbased bifunctional catalyst working at high current density is an urgent issue for water electrolysis(WE).Herein,we prepare the N-doped graphene-decorated NiCo alloy coupled with mesoporous NiCoMoO nano-sheet grown on 3D nickel foam(NiCo@C-NiCoMoO/NF)for water splitting.NiCo@C-NiCoMoO/NF exhibits outstanding activity with low overpotentials for hydrogen and oxygen evolution reaction(HER:39/266 mV;OER:260/390 mV)at±10 and±1000 mA cm^(−2).More importantly,in 6.0 M KOH solution at 60℃ for WE,it only requires 1.90 V to reach 1000 mA cm−2 and shows excellent stability for 43 h,exhibiting the potential for actual application.The good performance can be assigned to N-doped graphene-decorated NiCo alloy and mesoporous NiCoMoO nano-sheet,which not only increase the intrinsic activity and expose abundant catalytic activity sites,but also enhance its chemical and mechanical stability.This work thus could provide a promising material for industrial hydrogen production.