锂盐LiBOB的性能研究

Performance Study of Lithium Salt LiBOB

运用电化学阻抗谱和稳态直流极化法研究了LiBOB.(PEO)n聚合物电解质膜的性能;用恒电流充放电测试研究了以LiBOB作锂盐的电池的循环性能.结果表明,LiBOB具有好的导电性能,O与Li的摩尔比为16∶1时,LiBOB.(PEO)n膜室温下的电导率最高为5.8×10-6S/cm,锂离子迁移数t+=0.39;LiBOB的大电流充放电性能有待改进.

The performances of lithium salt LiBOB in polyethylene oxide（PEO） - based solid polymer electrolytes were studied by EIS and steady-state current. Some cells were made using LiBOB as lithium salt, and the cells＇ cycling performances were studied by charge-discharge test. The results showed that LiBOB· （PEO）n polymer electrolyte had the maximum conductivity δ = 5.8 × 10^-6 S/cm when the molecule ratio of O/Li was 16 ： 1 at room temperature, and the ionic transference number of Li^＋ was t ＋ = 0.39, but LiBOB＇s cycling performance at 1C was not very good.