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

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作者
CHEN Zuofeng JIANG Yanxia ZHUANG Quanchao DONG Quanfeng WANG Ye SUN Shigang State Key Laboratory for Physical Chemistry of Solid Surfaces De partment of Chemistry Xiamen University Xiamen China Powerlong Battery Research Institute Xiamen University Xiamen China [1 ,1 ,1 ,1 ,2 ,1 ,1 ,1 ,361005 ,2 ,361005 ]
机构
关键词
lithium ion batteries; microporous polymer electrolyte; PVdF-HFP; mesoporous SBA-15;
D O I
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中图分类号
TM910.4 [];
学科分类号
0808 ;
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.
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页码:29 / 34
页数:6
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