Journal
JOURNAL OF APPLIED ELECTROCHEMISTRY
Volume 39, Issue 12, Pages 2597-2603Publisher
SPRINGER
DOI: 10.1007/s10800-009-9949-4
Keywords
Vinyl ethylene carbonate; Solid electrolyte interface; Ionic liquid; Cyclic voltammetry; Additives; Lithium ion batteries
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Funding
- Shanghai Leading Academic Discipline Project [B113]
- Scientific Research Starting Foundation for Returned Overseas Chinese Scholars
- Ministry of Education, China
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In this research, we investigated the potential application of vinyl ethylene carbonate (VEC) and ethylene carbonate (EC) as solid electrolyte interface (SEI) film-forming additive in 1-ethyl-3-methylimidazolium (EMI)-bis(trifluoromethyl-sulfonyl) imide (TFSI)-LiTFSI ionic liquid electrolyte (IL). The electrochemical performance of natural graphite (NG7) was studied in LiTFSI/EMI-TFSI containing different weight percent of EC/VEC via cyclic voltammetry (CV), electrochemical impedance spectrum (EIS), and galvanostatic charge/discharge cycles. Temperature effect on the discharge/charge performance of NG7 electrode in the researched IL electrolyte was also discussed.
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