ROMCP制备PEO基聚合物电解质及其性能研究

Synthesisand Properties of a PEO Based Polymer Electrolyte via ROMCP

采用活性开环移位共聚(ROMCP)方法,设计并合成了一种同时具有锂离子源、锂离子传导区和膜支撑区的新型聚合物电解质(SIPE),并研究了不同[EO]∶[Li^+]配比对其电导率的影响,确定最终反应比例。同时,对SIPE与正极材料LiFePO_4的相容性进行了表征及检测分析。结果表明,SIPE具有良好的三维立体结构及电化学性能,可以大大提升锂电池的高温安全性能。

By the method of ring-opening metathesis polymerization （ROMP）, the new polymer electrolyte （SIPE） including lithium-ion source, lithium-ion conduction region and membrane supporting region was designed and synthesized. The effects of different ratios of [EO ] ： [ Li＋ ] on the electrical conductivity was studied, and the ratio was determined finally. At the same time, the compatibility with LiFePO4 was characterized and analyzed. The results show that SIPE has a good three-dimensional structure and electrochemical performance, which can greatly enhance the safety performance of lithium battery at high temperature.