Iron-induced 3D nanoporous iron-cobalt oxyhydroxide on carbon cloth as a highly efficient electrode for oxygen evolution reaction

作     者：Guodong Chen Jian Du Xilong Wang Xiaoyue Shi Zonghua Wang Han-Pu Liang 陈国栋;杜健;王西龙;时晓玥;王宗花;梁汉璞

作者机构：College of Chemistry and Chemical EngineeringShandong Sino-Japanese Center for Collaborative Research of Carbon NanomaterialsQingdao UniversityQingdao 266071ShandongChina Qingdao Institute of Bioenergy and Bioprocess TechnologyChinese Academy of SciencesQingdao 266101Shandong China Center of Materials Science and Optoelectronics EngineeringUniversity of Chinese Academy of SciencesBeijing 100049China 

出 版 物：《Chinese Journal of Catalysis》 (催化学报（英文）)

年 卷 期：2019年第40卷第10期

页      面：1540-1547页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 070304[理学-物理化学(含∶化学物理)] 08[工学] 0817[工学-化学工程与技术] 0703[理学-化学] 

基　　金：supported by the Taishan Scholar Program of Shandong (ts201511027) the Natural Science Foundation of Shandong Province (2018GGX102030) support from the “Hundred Talent Program” of Chinese academy of Sciences (CAS) (RENZI 70HAO, Y5100619AM),DICP and QIBEBT (UN201804),Dalian National Laboratory For Clean Energy (DNL),CAS Research Innovation Fund (QIBEBT SZ201801)~~ 

主　　题：3D nanoporous iron-cobalt oxyhydroxide layer Micro go chess piece arrays Electrode material Electro-oxidation Oxygen evolution reaction 

摘      要：The development of highly efficient and cost-effective electrode materials for catalyzing the oxygen evolution reaction(OER)is crucial for water splitting *** increase in the number of active sites by tuning the morphology and structure and the enhancement of the reactivity of active sites by the incorporation of other components are the two main strategies for the enhancement of their catalytic *** this study,by combining these two strategies,a unique three-dimensional nanoporous Fe-Co oxyhydroxide layer coated on the carbon cloth(3D-FeCoOOH/CC)was successfully synthesized by in situ electro-oxidation methods,and directly used as a working *** electrode,3D-FeCoOOH/CC,was obtained by the Fe doping process in(NH4)2Fe(SO4)2,followed by continuous in situ electro-oxidization in alkaline medium of“micro go chess piecearrays on the carbon cloth(MCPAs/CC).Micro characterizations illustrated that the go pieces of MCPAs/CC were completely converted into a thin conformal coating on the carbon cloth *** electrochemical test results showed that the as-synthesized 3D-FeCoOOH/CC exhibited enhanced activity for OER with a low overpotential of 259 mV,at a current density of 10 mA cm^–2,and a small Tafel slope of 34.9 mV dec^–1,as well as superior stability in 1.0 mol L^–1 KOH *** extensive analysis revealed that the improved electrochemical surface area,conductivity,Fe-Co bimetallic composition,and the unique 3D porous structure together contributed to the enhanced OER activity of 3D-FeCoOOH/***,the synthetic strategy applied in this study could be extended to fabricate a series of Co-based electrode materials with the dopant of other transition elements.