Title of article :
Performance of Li-ion cells with new electrolytes conceived for low-temperature applications
Author/Authors :
Sergey V. Sazhin، نويسنده , , Mikhail Yu. Khimchenko، نويسنده , , Yevgeniy N. Tritenichenko، نويسنده , , Hong S. Lim، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2000
Pages :
6
From page :
112
To page :
117
Abstract :
In an effort to develop a useful electrolyte for a Li-ion cell applicable in a wide operation temperature, we have studied a number of ternary electrolytes containing a cyclic carbonate (ethylene carbonate (EC)), a linear carbonate (dimethyl carbonate (DMC), diethyl carbonate (DEC), or ethylmethyl carbonate (EMC)), and a low-temperature freezing solvent (methyl acetate, ethyl acetate, isopropyl acetate, isoamyl acetate, or ethyl propionate (EP)). We have studied performance including cycle life of Li-ion cells containing these electrolytes at various temperatures. The performance was various with various electrolyte compositions showing a significant effect of the low-temperature freezing solvents while the effect of the linear carbonates was relatively minor. Cells containing an electrolyte of EC–DMC–MA showed an excellent initial performance at −20°C but it did not give a good cycle life compared with others. Two electrolyte compositions containing EP, EC–DEC–EP and EC–EMC–EP, showed the most attractive overall performance including initial performance at −20°C, cycle life and rate capability at room temperature as well as 50°C.
Keywords :
Low-temperature performance , Electrolyte , Lithium-ion cells , Cycle life
Journal title :
Journal of Power Sources
Serial Year :
2000
Journal title :
Journal of Power Sources
Record number :
440171
Link To Document :
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