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Effects of lithium salts on thermal stabilities of lithium alkyl carbonates in SEI layer

Cited 35 time in Web of Science Cited 37 time in Scopus
Authors
Ryou, Myung-Hyun; Lee, Je-Nam; Lee, Dong Jin; Kim, Wan-Keun; Jeong, You Kyeong; Choi, Jang Wook; Park, Jung-Ki; Lee, Yong Min
Issue Date
2012-11
Citation
Electrochimica Acta, Vol.83, pp.259-263
Keywords
Differential scanning calorimetry (DSC)Lithium alkyl carbonateLithium ion batteriesSolid electrolyte interphase (SEI) layerThermal stability
Abstract
With the aim of attaining a better understanding of the thermal stabilities of solid electrolyte interphase (SEI) layers with lithium salts, a series of lithium alkyl carbonates, including lithium methyl carbonate (LMC) and lithium ethyl carbonate (LEC), were synthesized as model reference SEI components. The effects of the lithium salts, lithium hexafluorophosphate (LiPF6) and lithium bis(oxalate) borate (LiBOB), on the thermal stabilities of the lithium alkyl carbonates were then investigated via the differential scanning calorimetry (DSC) method. It was demonstrated that small and broad exothermic peaks near 100 degrees C for pure lithium alkyl carbonates were drastically increased, likely due to vigorous synergic exothermal reactions between the lithium alkyl carbonates and LiPF6. In contrast, LiBOB did not show increased peaks. (C) 2012 Elsevier Ltd. All rights reserved.
ISSN
0013-4686
URI
http://hdl.handle.net/10371/164645
DOI
https://doi.org/10.1016/j.electacta.2012.08.012
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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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