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 language | English |
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Pages (from-to) | 1096-1100 |
Number of pages | 5 |
Journal | Beijing Ligong Daxue Xuebao/Transaction of Beijing Institute of Technology |
Volume | 35 |
Issue number | 10 |
DOIs | |
Publication status | Published - 1 Oct 2015 |
Keywords
- DMMP
- Flame-retardant electrolyte
- Li-ion battery
- TPP