SCI和EI收录∣中国化工学会会刊

中国化学工程学报 ›› 2022, Vol. 42 ›› Issue (2): 380-388.DOI: 10.1016/j.cjche.2021.02.010

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Metal-organic framework-derived Ni doped Co3S4 hierarchical nanosheets as a monolithic electrocatalyst for highly efficient hydrogen evolution reaction in alkaline solution

Jiankang Wang1,2, Yajing Wang1,2, Zhongping Yao1, Zhaohua Jiang1   

  1. 1. School of Chemistry and Chemical Engineering, State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150001, China;
    2. College of Materials Science and Engineering, Yangtze Normal University, Chongqing 408100, China
  • 收稿日期:2020-07-22 修回日期:2020-11-19 出版日期:2022-02-28 发布日期:2022-03-30
  • 通讯作者: Jiankang Wang,E-mail:wangjiankang@yznu.edu.cn;Zhongping Yao,E-mail:yaozhongping@hit.edu.cn
  • 基金资助:
    This work was funded by National Natural Science Foundation of China (Nos. 21906008 and 51571076), Open Project of State Key Laboratory of Urban Water Resource and Environment of Harbin Institute of Technology (No. HCK201716), Chongqing Basic and Frontier Research Program (cstc2018jcyjAX0774) and Science and Technology Research Program of Chongqing Municipal Education Commission (Nos. KJQN201901420 and KJQN202001413).

Metal-organic framework-derived Ni doped Co3S4 hierarchical nanosheets as a monolithic electrocatalyst for highly efficient hydrogen evolution reaction in alkaline solution

Jiankang Wang1,2, Yajing Wang1,2, Zhongping Yao1, Zhaohua Jiang1   

  1. 1. School of Chemistry and Chemical Engineering, State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150001, China;
    2. College of Materials Science and Engineering, Yangtze Normal University, Chongqing 408100, China
  • Received:2020-07-22 Revised:2020-11-19 Online:2022-02-28 Published:2022-03-30
  • Contact: Jiankang Wang,E-mail:wangjiankang@yznu.edu.cn;Zhongping Yao,E-mail:yaozhongping@hit.edu.cn
  • Supported by:
    This work was funded by National Natural Science Foundation of China (Nos. 21906008 and 51571076), Open Project of State Key Laboratory of Urban Water Resource and Environment of Harbin Institute of Technology (No. HCK201716), Chongqing Basic and Frontier Research Program (cstc2018jcyjAX0774) and Science and Technology Research Program of Chongqing Municipal Education Commission (Nos. KJQN201901420 and KJQN202001413).

摘要: Hierarchical nanostructure construction and electronic structure engineering are commonly employed to increase the electrocatalytic activity of HER electrocatalysts. Herein, Ni doped Co3S4 hierarchical nanosheets on Ti mesh (Ni doped Co3S4 HNS/TM) were successfully prepared by using metal organic framework (MOF) as precursor which was synthesized under ambient condition. Characterization results confirmed this structure and Ni incorporation into Co3S4 lattice as well as the modified electronic structure of Co3S4 by Ni doping. Alkaline HER performance showed that Ni doped Co3S4 HNS/TM presented outstanding HER activity with 173 mV overpotential at -10 mA·cm-2, surpassing most of metal sulfide-based electrocatalysts. The hierarchical structure, superior electrical conductivity and electronic structure modulation contributed to the accelerated water dissociation and enhanced intrinsic activity. This work provides a new avenue for synthesizing hierarchical nanostructure and simultaneously tuning the electronic structure to promote HER performance, which has potential application in designing highly efficient and cost-effective HER nanostructured electrocatalyst.

关键词: Metal-organic framework, Electronic structure, Ni doped Co3S4, Electrochemistry, Catalysis, Hydrogen production

Abstract: Hierarchical nanostructure construction and electronic structure engineering are commonly employed to increase the electrocatalytic activity of HER electrocatalysts. Herein, Ni doped Co3S4 hierarchical nanosheets on Ti mesh (Ni doped Co3S4 HNS/TM) were successfully prepared by using metal organic framework (MOF) as precursor which was synthesized under ambient condition. Characterization results confirmed this structure and Ni incorporation into Co3S4 lattice as well as the modified electronic structure of Co3S4 by Ni doping. Alkaline HER performance showed that Ni doped Co3S4 HNS/TM presented outstanding HER activity with 173 mV overpotential at -10 mA·cm-2, surpassing most of metal sulfide-based electrocatalysts. The hierarchical structure, superior electrical conductivity and electronic structure modulation contributed to the accelerated water dissociation and enhanced intrinsic activity. This work provides a new avenue for synthesizing hierarchical nanostructure and simultaneously tuning the electronic structure to promote HER performance, which has potential application in designing highly efficient and cost-effective HER nanostructured electrocatalyst.

Key words: Metal-organic framework, Electronic structure, Ni doped Co3S4, Electrochemistry, Catalysis, Hydrogen production