Energy Storage Science and Technology ›› 2018, Vol. 7 ›› Issue (6): 1016-1029.doi: 10.12028/j.issn.2095-4239.2018.0164

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Research progress on safety of lithium ion battery electrolyte

ZHANG Xiaosong, XIA Yonggao   

  1. Ningbo Institute of Materials Technology & Engineering, Chinese Academy of Science, Ningbo 315201, Zhejiang, China
  • Received:2018-08-30 Revised:2018-09-30 Online:2018-11-01 Published:2018-10-19
  • Contact: 10.12028/j.issn.2095-4239.2018.0164

Abstract: Energy density and safety of lithium ion batteries (LIBs) are the main obstacles that hinder the large-scale applications of LIBs in electric vehicles. With continuous improvement of LIBs in energy density, solving safety issue effectively is becoming increasingly urgent. These safety issues are intrinsically related to the present utilization of highly volatile and flammable organic solvents. Herein, the research status on safety of electrolyte in LIBs is summarized in this review, including the application of flame retardant, non-flammable fluorinated organic solvent, high concentration electrolyte and hybrid electrolyte from the point of combustibility of electrolyte. The paper analyzes mechanisms of enhancing safety for LIBs and provides an outlook of electrolyte in application development.

Key words: lithium ion battery, electrolyte, safety

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