含氟磷腈阻燃电解液共溶剂  

Cosolvent of fluoro-containing phosphazene for flame retardant electrolyte

作　　者：刘榛[1,2] 尚玉明[1,2] 王莉[1,3] 何向明[1,2] 

机构地区：[1]清华大学核能与新能源技术研究院,北京100084 [2]江苏华东锂电技术研究院,江苏苏州215600 [3]清华大学汽车安全与节能国家重点实验室,北京100084

出　　处：《电池》2016年第3期125-128,共4页Battery Bimonthly

基　　金：国家重点基础研究发展计划(2013CB934000);科技部高技术研究发展计划(2013AA050903);科技部国际科技合作项目(2014DFG71590);江苏省科技支撑计划(BE2014006-2);江苏省产学研前瞻性联合研究项目(BY2015046)

摘　　要：以六氯环三磷腈为基体,采用八氟戊醇与三氟乙醇对活泼氯原子取代,引入含氟类化合物,制备含氟磷腈化合物,并用于电解液共溶剂。FT-IR分析证明:合成了含氟磷腈类化合物。该化合物与碳酸酯类溶剂具有较好的相溶性,用作锂离子电池电解液共溶剂,当含氟磷腈添加量为30%时,电解液具有较好的阻燃性,且对电池电化学性能的影响不大。Hexachlorocyclotriphosphazene was used as the substrate,2,2,3,3,4,4,5,5-octafluoro-1-pentanoland 2,2,2-trifluoroethanol were employed to replace the active chlorine atom and introduce fluoro-compound to the cycle phosphazene structure forming the fluoro-phosphonitrile（ FP）,then used for a cosolvent of electrolyze. Fluoro-phosphonitrile was verified by FT-IR analysis. Due to the fine compatibility with carbonate solvent,fluoro-phosphonitrile was empolyed as the cosolvent of the electrolyte of Li-ion battery. When the adding amount of FP was 30%,the obtained electrolyte had good fire retard property and almost had no negetive effect on the electrochemical performance of battery.

关 键 词：六氯环三磷腈 氟化 电解液 共溶剂 锂离子电池 

分 类 号：TM912[电气工程—电力电子与电力传动]