One-step synthesis of Fe-Ni hydroxide nanosheets derived from bimetallic foam for efficient electrocatalytic oxygen evolution and overall water splitting

作     者：Lili Zeng Linjing Yang Jia Lu Jin Jia Jiayuan Yu Yunqie Deng Mingfei Shao Weijia Zhou 

作者机构：Guangzhou Key Laboratory for Surface Chemistry of Energy MaterialsNew Energy Research InstituteSchool of Environment and EnergySouth China University of TechnologyGuangzhou Higher Education Mega CenterGuangzhou 510006China Xinhua College of Sun Yat-sen UniversityGuangzhou 510520China State Key Laboratory of Chemical Resource EngineeringBeijing University of Chemical TechnologyBeijing 100029China 

出 版 物：《Chinese Chemical Letters》 (中国化学快报（英文版）)

年 卷 期：2018年第29卷第12期

页      面：1875-1878页

核心收录：

学科分类：081704[工学-应用化学] 08[工学] 0817[工学-化学工程与技术] 

基　　金：supported by the Science and Technology Planning Project of Guangdong Province,China(No.2017B090916002) Tip-top Scientific and Technical Innovative Youth Talents of Guangdong Special Support Program(No.2016TQ03N541) Guangdong Natural Science Funds for Distinguished Young Scholar(No.2017B030306001) the National Natural Science Foundation of China(No.91745203) Guangdong Innovative and Entrepreneurial Research Team Program(No.2014ZT05N200) 

主　　题：One-step synthesis Bimetallic foam Water splitting Fe-Ni hydroxide Nanosheet array 

摘      要：The research of superior water oxidation electrodes is essential for the green energy in the form of hydrogen by way of electrolytic water splitting, and still remains challenging. Based upon dealloying foam, Fe-Ni hydroxide nanosheets network structure is designed on the surface of Fe-Ni alloy foam. The ratio of Ni/Fe elements was adjusted to realize the optimal catalytic activities for oxygen evolution reaction（OER） and hydrogen evolution reaction（HER）. The obtained electrode of Fe-Ni hydroxide nanosheets/Fe-Ni alloy foam-60% Fe（FN LDH/FNF-60, 60 is the percentage of Fe content） possess low overpotential of 261 mV to reach 10 mA/cm;, small Tafel slope（85.5 mV/dec）, and superior long-term stability（remaining 10 mA/cm;for over 14 h without attenuation） toward OER in 1.0 mol/L ***, an alkaline water electrolyzer is constructed with the FN LDH/FNF-60 as anode and Ni（OH）;/Fe-Ni alloy foam-25% Fe(Ni（OH）;/FNF-25) as cathode, which displays superior electrolytic performance（affording 10 mA/cm;at 1.62 V） and lasting durability.