In situ growth of NiSe@Co_(0.85)Se heterointerface structure with electronic modulation on nickel foam for overall water splitting

作     者：Wen-Long Ding Yan-Hui Cao Hui Liu Ao-Xuan Wang Cui-Juan Zhang Xue-Rong Zheng Wen-Long Ding;Yan-Hui Cao;Hui Liu;Ao-Xuan Wang;Cui-Juan Zhang;Xue-Rong Zheng

作者机构：Key Laboratory for Green Chemical Technology of Ministry of EducationState Key Laboratory of Chemical EngineeringSchool of Chemical Engineering and TechnologyTianjin UniversityTianjin 300072China School of Materials Science and EngineeringKey Laboratory of Advanced Ceramics and Machining Technology of Ministry of EducationTianjin UniversityTianjin 300072China Department of Physics and AstronomyUniversity of CaliforniaIrvineCA 92697USA Tianjin Kaben New Materials Technology Co.Ltd.Tianjin 300350China 

出 版 物：《Rare Metals》 (稀有金属（英文版）)

年 卷 期：2021年第40卷第6期

页      面：1373-1382页

核心收录：

学科分类：081702[工学-化学工艺] 081705[工学-工业催化] 0806[工学-冶金工程] 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] 0703[理学-化学] 0702[理学-物理学] 

基　　金：financially supported by the National Natural Science Foundation of China(No.51804216) 

主　　题：NiSe@Co_(0.85)Se/NF Heterointerface structure Electronic modulation Bifunctional electrocatalyst Overall water splitting 

摘      要：Constructing heterointerface engineering has becoming an effective and general strategy for developing highly efficient and durable nonnoble electrocatalysts for catalyzing both hydrogen evolution reaction(HER)and oxygen evolution reaction(OER).In this work,we synthesized a self-supporting heterogeneous NiSe@Co_(0.85)Se/NF electrocatalyst using a facile in situ selenization of transition metal precursors that coated on the nickel foam(NF)in polyol *** NF was used as both conductive substrate and nickel source,ensuring superior electronic conductivity for *** NiSe@-Co_(0.85)Se/NF exhibited remarkable bifunctional electrocatalytic activities with HER overpotential of 168 mV and OER overpotential of 258 mV to achieve 10 mA·*** water splitting system using NiSe@Co_(0.85)Se/NF as both anode and cathode electrodes achieved a current density of 10 mA·cm^(-2) at 1.61 V with nearly 100% faradaic efficiency and impressively long-term *** efficient bifunctional catalytic performance of NiSe@-Co_(0.85)Se/NF should be attributed to the electronic modulation and synergistic effect between NiSe and Co_(0.85)Se,the intrinsic metallic conductivity and the enlarged active sites *** work provides a facile method for developing heterogeneous bifunctional catalysts for advanced electrochemical energy conversion technologies.