SCI和EI收录∣中国化工学会会刊

Chinese Journal of Chemical Engineering ›› 2022, Vol. 47 ›› Issue (7): 185-192.DOI: 10.1016/j.cjche.2021.06.026

Previous Articles     Next Articles

Hybrid CuO-Co3O4 nanosphere/RGO sandwiched composites as anode materials for lithium-ion batteries

Yingmeng Zhang, Luting Liu, Qingwei Deng, Wanlin Wu, Yongliang Li, Xiangzhong Ren, Peixin Zhang, Lingna Sun   

  1. College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518060, China
  • Received:2021-02-07 Revised:2021-06-02 Online:2022-08-19 Published:2022-07-28
  • Contact: Lingna Sun,E-mail:sunln@szu.edu.cn
  • Supported by:
    This work was financially supported by the National Natural Science Foundation of China (21471100, 22005199), the Shenzhen Natural Science Fundation (20200813081943001), and the Natural Science Foundation of Guangdong Province, China (2021A1515010241, 2021A1515010142).

Hybrid CuO-Co3O4 nanosphere/RGO sandwiched composites as anode materials for lithium-ion batteries

Yingmeng Zhang, Luting Liu, Qingwei Deng, Wanlin Wu, Yongliang Li, Xiangzhong Ren, Peixin Zhang, Lingna Sun   

  1. College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518060, China
  • 通讯作者: Lingna Sun,E-mail:sunln@szu.edu.cn
  • 基金资助:
    This work was financially supported by the National Natural Science Foundation of China (21471100, 22005199), the Shenzhen Natural Science Fundation (20200813081943001), and the Natural Science Foundation of Guangdong Province, China (2021A1515010241, 2021A1515010142).

Abstract: Hybrid CuO-Co3O4 nanosphere building blocks have been embedded between the layered nanosheets of reduced graphene oxides with a three dimensional (3D) hybrid architecture (CuO-Co3O4-RGO), which are successfully applied as enhanced anodes for lithium-ion batteries (LIBs). The CuO-Co3O4-RGO sandwiched nanostructures exhibit a reversible capacity of~847 mA·h·g-1 after 200 cycles' cycling at 100 mA·g-1 with a capacity retention of 79%. The CuO-Co3O4-RGO compounds show superior electrochemical properties than the comparative CuO-Co3O4, Co3O4 and CuO anodes, which may be ascribed to the following reasons:the hybridizing multicomponent can probably give the complementary advantages; the mutual benefit of uniformly distributing nanospheres across the layered RGO nanosheets can avoid the agglomeration of both the RGO nanosheets and the CuO-Co3O4 nanospheres; the 3D storage structure as well as the graphene wrapped composite could enhance the electrical conductivity and reduce volume expansion effect associated with the discharge-charge process.

Key words: Composites, Nanostructure, Nanoparticles, Reduced graphene oxide, Metal oxides, Lithium ion batteries

摘要: Hybrid CuO-Co3O4 nanosphere building blocks have been embedded between the layered nanosheets of reduced graphene oxides with a three dimensional (3D) hybrid architecture (CuO-Co3O4-RGO), which are successfully applied as enhanced anodes for lithium-ion batteries (LIBs). The CuO-Co3O4-RGO sandwiched nanostructures exhibit a reversible capacity of~847 mA·h·g-1 after 200 cycles' cycling at 100 mA·g-1 with a capacity retention of 79%. The CuO-Co3O4-RGO compounds show superior electrochemical properties than the comparative CuO-Co3O4, Co3O4 and CuO anodes, which may be ascribed to the following reasons:the hybridizing multicomponent can probably give the complementary advantages; the mutual benefit of uniformly distributing nanospheres across the layered RGO nanosheets can avoid the agglomeration of both the RGO nanosheets and the CuO-Co3O4 nanospheres; the 3D storage structure as well as the graphene wrapped composite could enhance the electrical conductivity and reduce volume expansion effect associated with the discharge-charge process.

关键词: Composites, Nanostructure, Nanoparticles, Reduced graphene oxide, Metal oxides, Lithium ion batteries