{"title":"Effect of Fluoroethylene Carbonate Additive on Low Temperature Performance of Li-Ion Batteries","authors":"Bingxiao Liu, Bing Li, S. Guan","doi":"10.1149/2.027206ESL","DOIUrl":null,"url":null,"abstract":"The effects of Fluoroethylene carbonate (FEC) on the low temperature performance of Li-ion batteries were evaluated. By addition of 2 v% FEC into a commercial ternary electrolyte, the initial lithium intercalation capacity (graphite/Li model cell) was remarkably improved by approximately 50% and the voltage plateau of the cell was lowered by about 0.2 V at −20°C. This is maybe attributed to a reduced charge transfer resistance and a lowered SEI film resistance with a richer LiF phase formed on the graphite electrode by Tafel polarization, AC impedance and X-ray photoelectron spectroscopy (XPS) analysis.","PeriodicalId":11627,"journal":{"name":"Electrochemical and Solid State Letters","volume":"54 1","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2012-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"60","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Electrochemical and Solid State Letters","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1149/2.027206ESL","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 60
Abstract
The effects of Fluoroethylene carbonate (FEC) on the low temperature performance of Li-ion batteries were evaluated. By addition of 2 v% FEC into a commercial ternary electrolyte, the initial lithium intercalation capacity (graphite/Li model cell) was remarkably improved by approximately 50% and the voltage plateau of the cell was lowered by about 0.2 V at −20°C. This is maybe attributed to a reduced charge transfer resistance and a lowered SEI film resistance with a richer LiF phase formed on the graphite electrode by Tafel polarization, AC impedance and X-ray photoelectron spectroscopy (XPS) analysis.
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