Preparation and characteriza-tion of a novel composite mi-croporous polymer electrolyte for Li-ion batteries  

作　　者：CHEN Zuofeng JIANG Yanxia ZHUANG Quanchao DONG Quanfeng WANG Ye SUN Shigang 

机构地区：[1]State Key Laboratory for Physical Chemistry of Solid Surfaces, Department of Chemistry, Xiamen University. Xiamen 361005, China [2]Powerlong Battery Research Institute. Xiamen University, Xiamen 361005, China

出　　处：《Chinese Science Bulletin》2005年第14期1435-1440,共6页

基　　金：supported by the National Key Basic Research and Development Program(Grant No.2002CB211804);the National Natural Science Foundation of China(Grant Nos.90206039 and 20173045);the Technological Innovation Program of Xiamen University(Grant No.XDKJCX20041012).

摘　　要：A novel composite microporous polymer elec- trolyte composed of poly(vinylidene fluoride-co-hexafluorop- ropylene) (PVdF-HFP) and mesoporous SBA-15 was pre- pared. The composite solid polymer electrolyte (CSPE) ex- hibits ionic conductivity as high as 0.30 mS·cm?1 with a composition of SBA-15︰PVdF-HFP=3︰8 at room tem- perature. Infrared transmission spectroscopic results sug- gested that the mechanism of micropore formation is similar to that of the phase inversion. X-ray diffraction (XRD) results demonstrated that the addition of SBA-15 inhibits the crys- tallization of PVdF-HFP, while the SBA-15 preserves well its ordered mesoporous structure during the course of prepara- tion. The Li/CSPE/MCF of half-cell was assembled, and it showed a good electrochemical and cyclability performance during charge-discharge cycles.A novel composite microporous polymer electrolyte composed of poly（vinylidene fluoride-co-hexafluoropropylene） （PVdF-HFP） and mesoporous SBA-15 was prepared. The composite solid polymer electrolyte （CSPE） exhibits ionic conductivity as high as 0.30 mS·cm^-1 with a composition of SBA-15 ： PVdF-HFP=3 ： 8 at room temperature. Infrared transmission spectroscopic results suggested that the mechanism of micropore formation is similar to that of the phase inversion. X-ray diffraction （XRD） results demonstrated that the addition of SBA-15 inhibits the crystallization of PVdF-HFP, while the SBA-15 preserves well its ordered mesoporous structure during the course of preparation. The Li/CSPE/MCF of half-cell was assembled, and it showed a good electrochemical and cyclability performance during charge-discharge cycles.

关 键 词：锂离子电池 多微孔聚合体 电解液 传导性 红外线传播 

分 类 号：TM912[电气工程—电力电子与电力传动]