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Preparation of Co3O4/NF Anode for Lithium-ion Batteries

  • Tian, Shiyi (School of Science, Harbin University of Science and Technology) ;
  • Li, Botao (School of software and microelectronics, Harbin University of Science and Technology) ;
  • Zhang, Bochao (School of software and microelectronics, Harbin University of Science and Technology) ;
  • Wang, Yang (School of Science, Harbin University of Science and Technology) ;
  • Yang, Xu (School of software and microelectronics, Harbin University of Science and Technology) ;
  • Ye, Han (School of software and microelectronics, Harbin University of Science and Technology) ;
  • Xia, Zhijie (School of software and microelectronics, Harbin University of Science and Technology) ;
  • Zheng, Guoxu (School of software and microelectronics, Harbin University of Science and Technology)
  • Received : 2020.06.11
  • Accepted : 2020.07.06
  • Published : 2020.11.30

Abstract

Due to its characteristics of light weight, high energy density, good safety, long service life, no memory effect, and environmental friendliness, lithium-ion batteries (LIBs) are widely used in various portable electronic products. The capacity and performance of LIBs largely depend on the performance of electrode materials. Therefore, the development of better positive and negative materials is the focus of current research. The application of metal organic framework materials (MOFs) derivatives in energy storage has attracted much attention and research. Using MOFs as precursors, porous metal oxides and porous carbon materials with controllable structure can be obtained. In this paper, rod-shaped Co-MOF-74 was grown on Ni Foam (NF) by hydrothermal method, and then Co-MOF-74/NF precursor was heat-treated to obtain rodshaped Co3O4/NF. Ni Foam was skeleton structured, which effectively relieved. The change of internal stress changes and destroys the structural volume of the electrode material and reduces the capacity attenuation. Co3O4/NF composite material has a specific discharge capacity of up to 1858 mA h/g for the first time, and a reversible capacity of up to 902.4 mA h/g at a current density of 200 mA/g, and has excellent rate and impedance performance. The synthesis strategy reported in this article opens the way to design high-performance electrodes for energy storage and electrochemical catalysis.