Performance of electrolyte with dimethyl methyl phosphonate as flame-retardant additive

摘要：

To improve the safety of lithium-ion batteries,dimethyl methyl phosphonate(DMMP) was used as a flame-retardant additive in a LiPF6 electrolyte solution.The flammability and thermal stability of DMMP-containing electrolyte was investigated by means of burning test and accelerating rate calorimeter.It was found that the flammability and self-heat rate of the electrolyte can be reduced by the addition of DMMP.On the other hand,the electrochemical performances of graphite/LiCoO2 cells become slightly worse after using DMMP additive in the electrolyte.This alleviated trade-off between electrolyte flammability,thermal stability,and cell performance provides a possibility to formulate a nonflammable electrolyte containing DMMP and improve the electrolyte thermal stability with a minimal sacrifice in performance.

关键词： lithium ion batteries dimethyl methyl phosphonate(DMMP) fame-retardant

作者: ZHOU Dai-ying LIU Jian-sheng LI Wei-shan TAN Chun-lin XU Meng-qing ZHAO Ling-zhi

作者单位: Department of Chemistry,South China Normal University,Guangzhou 510006,China College of Materials Science and Engineering,South China University of Technology,Guangzhou 510641,C College of Materials Science and Engineering,South China University of Technology,Guangzhou 510641,C

会议类型: 国际会议

会议名称: 2007年国际有色金属大会(International Conference of Nonfereous Materials 2007)(ICNFM)

会议地点: 长沙

会议语种:英文

在线出版日期: 2007-11-28（万方平台首次上网日期，不代表论文的发表时间）