FEC-LiTFSI-Pyr1ATFSI Ionic Liquid Electrolyte to Improve Low Temperature Performance of Lithium-Ion Batteries

Xiao Xue Zhang; Zhen Feng Wang; Cui Hua Li; Jian Hong Liu; Qian Ling Zhang

doi:10.4028/www.scientific.net/AMR.986-987.80

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 986-987FEC-LiTFSI-Pyr1ATFSI Ionic Liquid Electrolyte to...

FEC-LiTFSI-Pyr_1ATFSI Ionic Liquid Electrolyte to Improve Low Temperature Performance of Lithium-Ion Batteries

Abstract:

N-methyl-N-allylpyrrolidinium bis (trifluoromethanesulfonyl) imide (PYR_1ATFSI) with substantial supercooling behavior is synthesized to develop low temperature electrolyte for lithium-ion batteries. Additive fluoroethylene carbonate (FEC) in LiTFSI/PYR_1ATFSI/EC/PC/EMC is found that it can reduce the freezing point. LiFePO₄/Li coin cells with the FEC-PYR_1ATFSI electrolyte exhibit good capacity retention, reversible cycling behavior at low temperatures. The good performance can be attributed to the decrease in the freezing point and the polarization of the composite electrolyte.

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Periodical:

Advanced Materials Research (Volumes 986-987)

Pages:

80-83

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.986-987.80

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Online since:

July 2014

Authors:

Xiao Xue Zhang*, Zhen Feng Wang, Cui Hua Li, Jian Hong Liu, Qian Ling Zhang

Keywords:

Electrolyte, Fluoroethylene Carbonate, Low Temperature

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