Chinese Journal of Applied Chemistry ›› 2020, Vol. 37 ›› Issue (12): 1441-1446.DOI: 10.11944/j.issn.1000-0518.2020.12.200149

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Preparation and Properties of Polyvinylidene Fluoride@Diatomite Fiber Membranes by Eletrospinning as Separator of Lithium-Ion Batteries

LIU Lixina, DONG Jianhonga, ZHANG Guanghuia*, ZHU Luyia, WANG Xinqianga, XU Donga, CHOW Yuktakb   

  1. aState Key Laboratory of Crystal Materials,Institute of Crystal Materials,Shandong University,Ji'nan 250100,China;
    bDepartment of Electrical Engineering,City University of Hong Kong,Hong Kong,China
  • Received:2020-05-18 Revised:2020-06-29 Accepted:2020-08-05 Published:2020-12-01 Online:2020-12-07
  • Contact: ZHANG Guanghui, associate professor; Tel:0531-88361332; E-mail:ghzhang@sdu.edu.cn; Research interests:reparation and application of zirconia fiber paper-based materials
  • Supported by:
    National Natural Science Foundation of China(No. 51472144), Shandong University Young Scholars Program(No.2016WLJH27) and the Fundamental Research Funds for the Central Universities(No.2082019014)

Abstract: Using polyvinylidene fluoride (PVDF) and diatomite as raw materials, PVDF@diatomite composite fiber membranes were prepared by electrospinning for lithium-ion battery. The electrolyte absorption rate, thermal stability and electrochemical properties of the separators were investigated. The addition of diatomite can effectively improve the electrolyte absorption rate and electrochemical performance of the composite separators. The electrolyte uptake is up to 623.6%. Compared with PVDF and polypropylene (PP) separators, it has excellent cycle and rate performance.

Key words: lithium-ion battery, separator, polyvinylidene fluoride, diatomite

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