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Electrolytic solvent effects on the gassing behavior in LCO parallel to LTO batteries
Zhang, Lan1; Zhang, Suojiang1; Zhou, Qian2; Snyder, Kent2; Miller, Theodore2

Li4Ti5O12 (LTO) is a promising anode material in both electrified vehicle and stationary energy storage applications for its superior rate capability and ultra-long cycle life. However, its widespread automotive utilization is hindered by electrolyte decomposition and gassing issues during high temperature (55 degrees C or higher) exposure. The exact mechanism of this gas generation is still not widely understood, and a specific commonly accepted solution for this issue has not yet been reported. In this study, LiCoO2/Li4Ti5O12 full cells are fabricated with three different electrolyte compositions and charged/discharged over different potential ranges (1.5-2.8 V, 1.5-2.9 V and 1.5-3.0 V) in room temperature or 60 degrees C. We find that the electrolyte component, in particular with respect to the cyclic carbonate content, exhibits significant influence on the gassing behavior; electron donating groups are helpful in gas suppression. Meanwhile, test temperature and up cut off voltage (UCOV) also influence the gassing behavior. For example, very limited gassing phenomenon is observed when the battery is tested at 60 degrees C or lower temperature with suitable electrolyte and UCOV below 2.9 V, while gas is produced when the UCOV is increased to 3.0 V or higher. (C) 2018 Elsevier Ltd. All rights reserved.

KeywordLi4ti5o12 Gassing Issue Solvent Effect Cut Off Voltage Propylene Carbonate Based Electrolytes
WOS HeadingsScience & Technology ; Physical Sciences
Indexed BySCI
WOS KeywordLi-ion Battery ; Sei ; Cells ; Electrodes
WOS Research AreaElectrochemistry
WOS SubjectElectrochemistry
Funding OrganizationNational Key Projects for Fundamental Research and Development of China(2016YFB0100100) ; National Natural Science Foundation of China(21706261) ; Ford University ; International Cooperation and Exchange of the National Natural Science Foundation of China(51561145020) ; CAS(QYZDY-SSW-JSC011) ; Chinese Academy of Sciences(XDA09010103) ; State Key Laboratory of Multiphase Complex Systems, IPE, CAS(MPCS-2015-A-05)
WOS IDWOS:000432158000020
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Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Affiliation1.Chinese Acad Sci, State Key Lab Multiphase Complex Syst, Beijing Key Lab Ion Liquids Clean Proc, Inst Proc Engn,Key Lab Green Proc & Engn, Beijing 100190, Peoples R China
2.Ford Motor Co, Energy Storage Mat & Strategy Res Dept, Dearborn, MI 48121 USA
Recommended Citation
GB/T 7714
Zhang, Lan,Zhang, Suojiang,Zhou, Qian,et al. Electrolytic solvent effects on the gassing behavior in LCO parallel to LTO batteries[J]. ELECTROCHIMICA ACTA,2018,274:170-176.
APA Zhang, Lan,Zhang, Suojiang,Zhou, Qian,Snyder, Kent,&Miller, Theodore.(2018).Electrolytic solvent effects on the gassing behavior in LCO parallel to LTO batteries.ELECTROCHIMICA ACTA,274,170-176.
MLA Zhang, Lan,et al."Electrolytic solvent effects on the gassing behavior in LCO parallel to LTO batteries".ELECTROCHIMICA ACTA 274(2018):170-176.
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