SCI和EI收录∣中国化工学会会刊

Chinese Journal of Chemical Engineering ›› 2023, Vol. 62 ›› Issue (10): 291-296.DOI: 10.1016/j.cjche.2023.03.025

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Zeolitic imidazolate framework-8 modified poly(vinylidene fluoride-co-hexafluoropropylene)/polyacrylonitrile composite separators for Li-ion batteries

Yanhuai Ding1,2, Cong Zhang1,2, Hao Zheng1,2, Yi Han1   

  1. 1. Institute of Rheological Mechanics, Xiangtan University, Xiangtan 411105, China;
    2. School of Mechanical Engineering and Mechanics, Xiangtan University, Hunan 411105, China
  • Received:2022-09-22 Revised:2023-03-18 Online:2023-12-23 Published:2023-10-28
  • Contact: Yanhuai Ding,E-mail:yhding@xtu.edu.cn;Yi Han,E-mail:1348390173@qq.com
  • Supported by:
    This work was financially supported by National Natural Science Foundation of China (12002295), Key Scientific Research Project of Education Department of Hunan Province, Xiangtan City, China (22A0113) and Major Science and Technology Projects of Xiangtan Science and Technology Bureau (GX-ZD202210011).

Zeolitic imidazolate framework-8 modified poly(vinylidene fluoride-co-hexafluoropropylene)/polyacrylonitrile composite separators for Li-ion batteries

Yanhuai Ding1,2, Cong Zhang1,2, Hao Zheng1,2, Yi Han1   

  1. 1. Institute of Rheological Mechanics, Xiangtan University, Xiangtan 411105, China;
    2. School of Mechanical Engineering and Mechanics, Xiangtan University, Hunan 411105, China
  • 通讯作者: Yanhuai Ding,E-mail:yhding@xtu.edu.cn;Yi Han,E-mail:1348390173@qq.com
  • 基金资助:
    This work was financially supported by National Natural Science Foundation of China (12002295), Key Scientific Research Project of Education Department of Hunan Province, Xiangtan City, China (22A0113) and Major Science and Technology Projects of Xiangtan Science and Technology Bureau (GX-ZD202210011).

Abstract: As one of the most stable metal-organtic framework (MOF), zeolitic imidazolate framework-8 (ZIF-8) has been widely studied for applications in the field of energy storage, catalysis, and environment protection. In this paper, ZIF-8 was employed to enhance the electrochemical properties and thermal stability of the electrospun poly(vinylidene fluoride-co-hexafluoropropylene)/polyacrylonitrile (PVDF-HFP/PAN) composite separator. The results indicate that the test cells assembled with the composite separators show improved rate capability, high discharge capacity, and stable cycling performances. The addition of ZIF-8 can improve the affinity of PVDF-HFP/PAN toward liquid electrolytes, and further enhance the ionic conductivity of the composite separators. In addition, the thermal stability of the PVDF-HFP/PAN separator has been improved by ZIF-8 nanoparticles. This work can provide insight into the application of MOF materials in Li-ion batteries.

Key words: Nanotechnology, ZIF-8, PVDF-HFP/PAN, Composites, Electrolytes

摘要: As one of the most stable metal-organtic framework (MOF), zeolitic imidazolate framework-8 (ZIF-8) has been widely studied for applications in the field of energy storage, catalysis, and environment protection. In this paper, ZIF-8 was employed to enhance the electrochemical properties and thermal stability of the electrospun poly(vinylidene fluoride-co-hexafluoropropylene)/polyacrylonitrile (PVDF-HFP/PAN) composite separator. The results indicate that the test cells assembled with the composite separators show improved rate capability, high discharge capacity, and stable cycling performances. The addition of ZIF-8 can improve the affinity of PVDF-HFP/PAN toward liquid electrolytes, and further enhance the ionic conductivity of the composite separators. In addition, the thermal stability of the PVDF-HFP/PAN separator has been improved by ZIF-8 nanoparticles. This work can provide insight into the application of MOF materials in Li-ion batteries.

关键词: Nanotechnology, ZIF-8, PVDF-HFP/PAN, Composites, Electrolytes