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Room temperature ionic liquid-based electrolytes as an alternative to carbonate-based electrolytes

Cited 24 time in Web of Science Cited 25 time in Scopus
Authors
Yim, Taeeun; Kwon, Mi-Sook; Mun, Junyoung; Lee, Kyu Tae
Issue Date
2015-05
Citation
Israel Journal of Chemistry, Vol.55 No.5, pp.586-598
Keywords
electrochemistryelectrolyteionic liquidsnon-flammabilityrechargeable battery
Abstract
The issue of the safety of Li-ion batteries is becoming more critical with the increase in their size for applications in large energy storage devices, such as hybrid electric vehicles (HEVs), and energy storage systems (ESSs) for smart grids. The thermal runaway of Li-ion batteries is considered to be caused by their flammable components, such as the volatile carbonate solvents of electrolytes. Room temperature ionic liquids (RTILs) have recently received much attention because of their characteristics of non-flammability and non-volatility. In addition, RTILs show high ionic conductivity and a wide electrochemical stability window. Therefore, RTIL-based electrolytes are considered one of the most promising candidates to improve the safety of Na-ion, as well as Li-ion batteries; indeed, RTIL-based electrolytes have shown excellent improvements in terms of thermal stability and electrochemical performance. This review provides a comprehensive overview of selected RTIL materials, including their physicochemical and electrochemical properties. Moreover, we discuss the failure mechanisms of certain RTIL-based electrolytes with various electrodes to suggest alternative strategies for improving their electrochemical performance.
ISSN
0021-2148
URI
https://hdl.handle.net/10371/171859
DOI
https://doi.org/10.1002/ijch.201400181
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College of Engineering/Engineering Practice School (공과대학/대학원)Dept. of Chemical and Biological Engineering (화학생물공학부)Journal Papers (저널논문_화학생물공학부)
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