期刊
JOURNAL OF SOLID STATE ELECTROCHEMISTRY
卷 12, 期 11, 页码 1497-1502出版社
SPRINGER
DOI: 10.1007/s10008-008-0511-9
关键词
PVDF-HFP; composite polymer electrolytes; phase inversion; Li-ion battery; transference number
Poly (vinylidene fluoride-co-hexafluoropropylene)-based composite polymer electrolyte (CPE) was prepared by phase inversion technique. In this work, we first applied a novel surface-modified sub-micro-sized alumina, PC-401, as ceramic filler. Various electrochemical methods were applied to investigate the electrochemical properties of the polymer electrolytes. We found that the CPE with 10 wt.% PC-401 has excellent electrochemical properties, including the ionic conductivity as high as 0.89 mS cm(-1) and the Li-ion transference number of 0.46. Polymer Li-ion batteries using LiFePO4 as cathode active material exhibited excellent cycling and high-temperature performances. PC-401 shows a promising applicability in the preparation of polymer electrolyte with high electrochemical properties.
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