Effect of fluoroethylene carbonate additive on the performance of lithium ion battery

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Abstract

Fluoroethylene carbonate (FEC) with a volume ratio of 2% was added to the electrolyte containing 1 mol · L-1 LiPF6 in ethylene carbonate (EC), dimethyl carbonate (DMC), and methyl ethyl carbonate (EMC) (1:1:1 by volume). The effects of FEC on lithium ion battery performance and on the mesocarbon microbead (MCMB) electrode/electrolyte interphase were studied by cyclic voltammetry (CV), scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS) and electrochemical impedance spectroscopy (EIS). The results indicated that the application of a 2% (volume ratio) of FEC suppressed electrolyte decomposition and caused the formation of an excellent solid electrolyte interphase (SEI) film on the MCMB electrode. The battery resistance decreased while the specific capacity and cyclic stability of the battery increased.

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Xu, J., Yao, W. H., Yao, Y. W., Wang, Z. C., & Yang, Y. (2009). Effect of fluoroethylene carbonate additive on the performance of lithium ion battery. Wuli Huaxue Xuebao/ Acta Physico - Chimica Sinica, 25(2), 201–206. https://doi.org/10.3866/pku.whxb20090201

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