Cited 23 time in webofscience Cited 23 time in scopus

Tuning glycolide as an SEI-forming additive for thermally robust Li-ion batteries

Title
Tuning glycolide as an SEI-forming additive for thermally robust Li-ion batteries
Authors
Jeon, J[Jeon, Jongho]Yoon, S[Yoon, Soojin]Park, T[Park, Taeyoon]Cho, JJ[Cho, Jeong-Ju]Kang, S[Kang, Sunwoo]Han, YK[Han, Young-Kyu]Lee, H[Lee, Hochun]
DGIST Authors
Lee, H[Lee, Hochun]
Issue Date
2012
Citation
Journal of Materials Chemistry, 22(39), 21003-21008
Type
Article
Article Type
Article
Keywords
AdditivesCyclabilityDensity Functional TheoryElectrochemical CellsElectrochemical ExperimentsElectrolyte AdditivesElevated TemperatureFunctional GroupsGlycolideGraphiteLi-Ion BatteriesLithium-Ion BatteryMethyl GroupSeebeck EffectVinylene Carbonates
ISSN
0959-9428
Abstract
A series of glycolide derivatives, glycolide (GL00), 3-methyl glycolide (GL01), 3,6-dimethyl glycolide (GL11) and 3,3,6,6-tetramethyl glycolide (GL22), are examined as SEI-forming electrolyte additives for LiCoO2/graphite lithium-ion batteries (LIBs). The novel additives are also compared with vinylene carbonate (VC), the currently most popular SEI-forming additive in LIBs. Through both density functional calculations and electrochemical experiments, it is confirmed that the number of methyl groups systematically affects anodic stability and the SEI-forming reaction of the glycolide additives. The cyclability of the LiCoO2/graphite cell is improved in the following order: VC ≥ GL00 ≥ GL01 > GL11 > GL22. With elevated temperature (90 °C) storage, however, the Al-pouch cells with VC and GL00 suffer from severe swelling, whereas the cells with GL01 and GL11 show reasonable dimensional stabilities. Both the good cyclability and the excellent thermal stability of GL01 make it the most appropriate SEI additive for the present LiCoO2/graphite chemistry. © 2012 The Royal Society of Chemistry.
URI
http://hdl.handle.net/20.500.11750/2481
DOI
10.1039/c2jm34191c
Publisher
Royal Society of Chemistry
Related Researcher
  • Author Lee, Ho Chun Electrochemistry Laboratory for Sustainable Energy(ELSE)
  • 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
Files:
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Collection:
Energy Science and EngineeringElectrochemistry Laboratory for Sustainable Energy(ELSE)1. Journal Articles


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