Energy Storage Science and Technology ›› 2021, Vol. 10 ›› Issue (1): 40-49.doi: 10.19799/j.cnki.2095-4239.2020.0234

• Energy Storage Materials and Devices • Previous Articles     Next Articles

Research progress of polyvinylidene fluoride based gel polymer electrolyte

Rongyan WEN1,2,3(), Zhihao GAO1,2,3, Shulin MEN1,2,3, Zuoqiang DAI1,2,3, Jianmin ZHANG1,2,3()   

  1. 1.Qingdao University School of Mechanical and Electrical Engineering
    2.Power Integration and Energy Storage System Engineering Technology Center, Qingdao University
    3.National and Local Joint Engineering Research Center for Intelligent Power Integration Technology for Electric Vehicles (Qingdao), Qingdao 266071, Shandong, China
  • Received:2020-07-02 Revised:2020-07-16 Online:2021-01-05 Published:2021-01-08

Abstract:

In between liquid electrolyte and solid electrolyte, gel polymer electrolyte (GPE) has attracted enormous interests because it can combine the advantages of liquid electrolyte and solid electrolyte. Polyvinylidene fluoride and its copolymer polyvinylidene fluoride-hexafluoropropylene have a high dielectric constant, which is conducive to the ionization of lithium ions, the improvement of ion conductivity, and thus can improve the electrochemical performance of lithium ion batteries. Is a kind of polymer material with application potential for preparing GPE. This article introduces the research progress of GPE based on polyvinylidene fluoride in the past five years, It focuses on the following four categories of GPE: (1) single polymer GPE based on polyvinylidene fluoride or polyvinylidene fluoride-hexafluoropropylene, (2) polymer composite GPE with other polymers (such as polymethyl acrylate, Polyisophthalamide, polyacrylonitrile, etc.), (3) composite GPE with inorganic nanomaterials (such as Aluminum oxide, silicon dioxide, Graphene oxide, etc), and (4) other new Other new types (polyvinylidene fluoride polymer and cellulose composite) GPEs. This article briefly describes the advantages and challenges of various types of composite GPE. Finally, the key problems for GPE industrialization were analyzed and some prospects for the future research directions of GPE were proposed.

Key words: lithium ion battery, gel polymer electrolyte, composite material, PVDF, PVDF-HFP

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