Study on TPP and DMMP as flame-retardant cosolvent in electrolytes for li-ion batteries

Qi Zhen Zhu, Ting Ting Jing, Nan Chen, Shu Guang Liu, Yi Jin, Ren Jie Chen*, Feng Wu

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

To improve the safety of Li-ion battery, the specific flame-retardant electrolytes and their properties were studied. Triphenyl phosphate(TPP) and dimethyl methyl phosphonate (DMMP) were used as the cosolvent in 1M LiPF6/EC:DEC (1:1 in weight) to reformulate the nonflammable electrolyte. The flame-retarded ability, thermal and electrochemical performances with these electrolytes were studied. The results show that the optimal mass fractions are 55% TPP and 35% DMMP by controlling the flame-retardant efficiency (η≥0.9) of the electrolytes. Furthermore, the modified electrolyte matches the electrode materials well in both physical and electrochemical stability.

Original languageEnglish
Pages (from-to)1096-1100
Number of pages5
JournalBeijing Ligong Daxue Xuebao/Transaction of Beijing Institute of Technology
Volume35
Issue number10
DOIs
Publication statusPublished - 1 Oct 2015

Keywords

  • DMMP
  • Flame-retardant electrolyte
  • Li-ion battery
  • TPP

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