Synthesis, characterization and application of a non-flammable dicationic ionic liquid in lithium-ion battery as electrolyte additive

Chatterjee, Kajari and Pathak, Anil D. and Lakma, Avinash and Sharma, Chandra Shekhar and et al, . (2020) Synthesis, characterization and application of a non-flammable dicationic ionic liquid in lithium-ion battery as electrolyte additive. Scientific Reports, 10 (9606). pp. 1-12. ISSN 2045-2322

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A novel dicationic room temperature ionic liquid, 1,1′-(5,14-dioxo-4,6,13,15-tetraazaoctadecane-1,18-diyl) bis(3-(sec-butyl)-1H-imidazol-3-ium) bis((trifluoromethyl)-sulfonyl) imide has been synthesized and fully characterized. Its thermal and electrochemical analyses along with transport properties have been studied. We propose it as a potential nominal additive to the commonly used conventional organic carbonate electrolyte mixture and study its adaptability in Lithium-ion batteries which are the prime power sources for ultraportable electronic devices. We have compared the performance characteristics of the full cells made without and with this ionic liquid. The cells comprise lithium nickel cobalt manganese oxide cathode, graphite anode and ethylene carbonate - dimethyl carbonate (1:1, v/v + LiPF6) mixture electrolyte with nominal amount of ionic liquid as additive. The major concern with conventional electrolytes such as degradation of the materials inside batteries has been addressed by this electrolyte additive. Additionally, this additive is safer at relatively higher temperature. In its presence, the overall battery life is enhanced and it shows good cycling performance and coulombic efficiency with better discharge capacities (22% higher) after 100 cycles. Even after the increase in current rate from 10 mA/g to 100 mA/g, the cell still retains around 73% of capacity. © 2020, The Author(s).

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IITH Creators:
IITH CreatorsORCiD
Sharma, Chandra Shekhar
Item Type: Article
Additional Information: K.C. and A.P. acknowledge IIT Bhubaneswar for the fellowship. A.L. acknowledges CSIR, New Delhi, India for his fellowship.
Uncontrolled Keywords: Synthesis dicationic ionic liquid,electrolyte additive,lithium-ion battery .
Subjects: Chemical Engineering
Divisions: Department of Chemical Engineering
Depositing User: . LibTrainee 2021
Date Deposited: 23 Nov 2022 11:04
Last Modified: 23 Nov 2022 11:04
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