Composite Electrolyte Containing Binary Ionic Liquids and LiDFOB Additive on the Performance of Graphite Anode in Li-Ion Battery

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

doi:10.4028/www.scientific.net/AMR.986-987.34

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 986-987Composite Electrolyte Containing Binary Ionic...

Composite Electrolyte Containing Binary Ionic Liquids and LiDFOB Additive on the Performance of Graphite Anode in Li-Ion Battery

Abstract:

A new composite electrolyte for lithium-ion batteries (LIB_S) was prepared by combining N-methyl-N-propylpyrrolidinium bis (trifluoromethanesulfonyl) imide (PYR₁₃TFSI), N-methyl-N-pr-opylpiperidinium bis (trifluoromethanesulfonyl) imide (PP₁₃TFSI) and lithium difluoro (oxalate) bor-ate (LiDFOB). Graphite electrode was tested in the LiDFOB-containing electrolyte, exhibiting higher reversible charge/discharge capacity and better cyclic stability. An initial charge capacity of 351.5 mAh⋅g^-1 is obtained and a stable capacity of above 332.8 mAh⋅g^-1 is retained after 30 cycles. The coulombic efficiency remains high above 99.3%. The outstanding cell performance was associ-ated with the formation of stable solid electrolyte interface (SEI) film on the surface of electrodes derived from LiDFOB.

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Periodical:

Advanced Materials Research (Volumes 986-987)

Pages:

34-37

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.986-987.34

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Online since:

July 2014

Authors:

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

Keywords:

Electrolyte Additive, LiDFOB, Lithium-Ion Battery, Safety

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* - Corresponding Author

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