文献类型：期刊文献

英文题名：The Cooperative Effect of Vinylene Carbonate and 1,3-Propane Sultone on the Elevated Temperature Performance of Lithium Ion Batteries

作者：Han, Guangshuai[1];Li, Bing[2];Ye, Zhiqun[1];Cao, Changhe[3];Guan, Shiyou[1]

机构：[1]E China Univ Sci & Technol, Sch Mat Sci & Engn, Shanghai 200237, Peoples R China;[2]E China Univ Sci & Technol, Sch Mech & Power Engn, Shanghai 200237, Peoples R China;[3]Ningbo Veken Battery Co Ltd, Ningbo 315800, Zhejiang, Peoples R China

年份：2012

卷号：7

期号：12

起止页码：12963

外文期刊名：INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000312936700107)】；

语种：英文

外文关键词：Vinylene carbonate; 1,3-propane sultone; Lithium ion battery; High temperature safety

摘要：Vinylene carbonate (VC) and 1,3-propane sultone (1,3-PS) have been used as the electrolyte additives to improve the high temperature safety of the lithium ion batteries. The electrochemical performance of ethylene carbonate-based binary electrolytes without and with additives on graphite electrode is studied by cyclic voltammetry and electrochemical impedance spectroscopic. The cycle performances of the graphite/LiCoO2 batteries with two additives are measured by battery testing system at 25 degrees C and 60 degrees C. The morphology and composition of the solid electrolyte interphase are analyzed by scanning electron microscopy and X-ray Photoelectron Spectroscopy, respectively. In summary, the co-use of VC and 1,3-PS can greatly improve the cycle life and suppress swelling behavior of graphite/LiCoO2 cells at elevated temperature.