Journal
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
Volume 9, Issue 2, Pages 1251-1260Publisher
ELSEVIER
DOI: 10.1016/j.jmrt.2019.11.052
Keywords
Ionic liquids; Discharge capacity; Lithium ion battery; Chronoamperometry
Funding
- Korea Institute of Energy Technology Evaluation and Planning (KETEP)
- Ministry of Trade, Industry & Energy (MOTIF) of the Republic of Korea [20194030202320]
- Basic Science Research Program through the National Research Foundation of Korea (NRF) - Ministry of Education [2017R1D1A1A09000823]
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A new bulky fluorinated anion based ionic liquid, 1-ethyl-3-methylimidazolium bis (nonafluorobutane-1-sulfonyl imidate) (Im(1,3) BNFSI), was synthesized through ion exchange condensation process and employed for electrolyte preparation. Nonaqueous liquid electrolytes were prepared using synthesized ionic liquid: lithium bis (nonafluorobutane-1-sulfonyl imidate) salt, propylene carbonate, and dimethoxy ethane solvents by mechanical agitation; and considered for applications in lithium ion batteries. Maximum electrical conductivity 2.21 mS.cm(-1) and wide electrochemical stability window (4.3 V) were achieved for the prepared electrolytes using different electrochemical techniques. The highest specific capacity (132.75 mA h.g(-1)) was achieved for LiFePO4/ionic liquid electrolytes/Li coin cell, suggesting them as an auspicious candidate for high performance lithium ion batteries. (C) 2019 The Authors. Published by Elsevier B.V.
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