Facile synthesis of Co and Ce dual-doped Ni3S2 nanosheets on Ni foam for enhanced oxygen evolution reaction  

作　　者：Xiaoxia Wu Tong Zhang Jiaxu Wei Pengfei Feng Xingbin Yan Yu Tang 

机构地区：[1]Laboratory of Clean Energy Chemistry and Materials,State Key Laboratory of Solid Lubrication,Lanzhou Institute of Chemical Physics Chinese Academy of Sciences,Lanzhou,730000,China [2]State Key Laboratory of Applied Organic Chemistry,Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province,College of Chemistry and Chemical Engineering,Lanzhou University,Lanzhou,730000,China [3]Center of Materials Science and Optoelectronics Engineering,University of Chinese Academy of Sciences,Beijing,100049,China

出　　处：《Nano Research》2020年第8期2130-2135,共6页纳米研究（英文版）

基　　金：We acknowledge the financial support from the National Natural Science Foundation of China(Nos.21871121 and 21431002);Fundamental Research Funds for the Central Universities(No.Lzujbky-2018-ot01).

摘　　要：Nano Research volume 13,pages2130–2135(2020)Cite this article 376 Accesses 2 Citations Metrics details Abstract Developing efficient and stable oxygen evolution reaction(OER)electrocatalysts via doping strategy has well-documented for electrochemical water splitting.Herein,a homogeneous structure(denoted as Co/Ce-Ni3S2/NF)composed of Co and Ce dual doped Ni3S2 nanosheets on nickel foam was synthesized by a facile one-step hydrothermal method.Co and Ce dopants are distributed inside the host sulfide,thereby raising the active sites and the electrical conductivity.Besides,the CeOx nanoparticles generated by part of the Ce dopants as a cocatalyst further improve the catalytic activity by adding defective sites and enhancing the electron transfer.As a consequence,the obtained Co/Ce-Ni3S2/NF electrode exhibits better electrocatalytic activity than single Co or Ce doped Ni3S2 and pure Ni3S2,with low overpotential(286 mV)at 20 mA-cm^−2,a small Tafel slope and excellent long-term durability in strong alkaline solution.These results presented here not only offer a novel platform for designing transition metal and lanthanide dual-doped catalysts,but also supply some guidelines for constructing catalysts in other catalytic applications.

关 键 词：ELECTROCATALYST oxygen evolution reaction dual-doping CeOx Ni3S2 

分 类 号：TQ116.1[化学工程—无机化工] TB383[一般工业技术—材料科学与工程]