Vacancy-modified bimetallic FeMoS_(x)/CoNiP_(x) heterostructure array for efficient seawater splitting and Zn-air battery

作     者：Ansheng Wang Shan Gao Jiaguo Yan Chunning Zhao Meng Yu Weichao Wang Ansheng Wang;Shan Gao;Jiaguo Yan;Chunning Zhao;Meng Yu;Weichao Wang

作者机构：Integrated Circuits and Smart System Lab(Shenzhen)Renewable Energy Conversion and Storage CenterTianjin Key Laboratory of Photo-Electronic Thin Film Device and TechnologyCollege of Electronic Information and Optical EngineeringNankai UniversityTianjin 300071China Department of Physical Science and TechnologyNingbo UniversityNingbo 315211ZhejiangChina Division of Oilfield ChemicalsChina Oilfield Services LimitedTianjin 300452China 

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

年 卷 期：2023年第81卷第6期

页      面：533-542,I0012页

核心收录：

学科分类：081702[工学-化学工艺] 0808[工学-电气工程] 081705[工学-工业催化] 08[工学] 0817[工学-化学工程与技术] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 0702[理学-物理学] 

基　　金：supported by the National Natural Science Foundation of China (21975136,22102076) the Fundamental Research Funds for the Central Universities (63185015) the Shenzhen Science,Technology and Innovation Committee (JCYJ20190808151603654,JCYJ20210324121002007) the Open Funds from National Engineering Lab for Mobile Source Emission Control Technology (NELMS2020A12) the Open Fund for Key Laboratory of Civil Aviation Thermal Hazards Prevention and Emergency Response (RZH2021-KF-03) 

主　　题：Vacancy Heterojunction Oxygen evolution reaction Seawater splitting Zn-air battery 

摘      要：The development of highly efficient OER catalysts with superior durability for seawater electrolysis and Zn-air battery is important but ***,the vacancy-modified heterostructured bimetallic Fe Mo S_(x)/Co Ni P_(x)OER electrocatalyst is *** from the electron redistribution and reaction kinetics modulation resulting from vacancy introduction and heterojunction formation,it yields ultralow OER overpotentials of 196,276,303 m V in 1 M KOH and 197,318,348 m V in 1 M KOH+seawater at 10,500,1000 m A cm^(-2),respectively,surviving 600 h at 800 m A cm^(-2)without obvious ***,FeMoS_(x)/CoNiP_(x)-based Zn-air battery not only affords the high peak power density of 214.5 m W cm^(-2)but also exhibits the small voltage gap of 0.698 V and long lifetime of 500 h at 10 m A cm^(-2),overmatching overwhelming majority of reported advanced *** is revealed experimentally that the OER process on rationally designed Fe Mo S_(x)/Co Ni P_(x)follows the adsorbate evolution mechanism and the ratedetermining step shifts from^(*)OOH formation in individual building blocks to^(*)OOH deprotonation process in FeMoS_(x)/CoNiP_(x),providing the directly proof of how the vacancy introduction and heterojunction formation affect the reaction kinetics.