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Fluoropropane sultone as an SEI-forming additive that outperforms vinylene carbonate

Fluoropropane sultone as an SEI-forming additive that outperforms vinylene carbonate
Jung, HM[Jung, Hyun Min]Park, SH[Park, Seong-Hyo]Jeon, J[Jeon, Jongho]Choi, Y[Choi, Yongsu]Yoon, S[Yoon, Soojin]Cho, JJ[Cho, Jeong-Ju]Oh, S[Oh, Sangdeok]Kang, S[Kang, Sunwoo]Han, YK[Han, Young-Kyu]Lee, H[Lee, Hochun]
DGIST Authors
Park, SH[Park, Seong-Hyo]Lee, H[Lee, Hochun]
Issued Date
Article Type
1,3-Propane SultoneElectrochemical ExperimentsElectron-WithdrawingElevated TemperatureLithium-Ion BatteryPropaneSeebeck EffectSolid Electrolyte InterphaseSolid ElectrolytesVinylene CarbonatesWide Temperature Ranges
Vinylene carbonate (VC) has been the best performing solid electrolyte interphase (SEI) additive for the current lithium-ion batteries (LIBs). However, it is also true that the current LIB technology is being stagnated by the limit set by VC. This study introduces 3-fluoro-1,3-propane sultone (FPS) as a novel SEI additive to replace VC and another popular SEI additive, 1,3-propane sultone (PS). Both density functional calculations and electrochemical experiments confirm that the presence of an electron withdrawing fluorine group is favourable in terms of anodic stability and SEI forming ability. In the cyclability of LiCoO2/graphite cells over a wide temperature range (25-60 °C), FPS exhibits remarkable enhancement compared with PS, and is even superior to VC. During elevated temperature (90 °C) storage of the cells, VC suffers from severe swelling, whereas FPS causes little thermal degradation. Considering the high anodic stability, the excellent cyclability, and the good thermal stability, FPS is an outstanding SEI additive that can expand the performance boundary of the current LIBs. © 2013 The Royal Society of Chemistry.
Royal Society of Chemistry
Related Researcher
  • 이호춘 Lee, Hochun 에너지공학과
  • Research Interests Lithium-ion batteries; Novel Materials for rechargeable batteries; Novel energy conversion;storage systems; Electrochemistry; 리튬이차전지; 이차전지용 신규 전극 및 전해액; 신규 에너지변환 및 저장 시스템; 전기화학
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Department of Energy Science and Engineering Electrochemistry Laboratory for Sustainable Energy(ELSE) 1. Journal Articles


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