Journal
JOURNAL OF MEMBRANE SCIENCE
Volume 272, Issue 1-2, Pages 11-14Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.memsci.2005.12.038
Keywords
PVDF-HFP; gel electrolyte; Li-ion battery; phase inversion; water
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A novel process was proposed for preparation of microporous poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP) membranes by phase inversion techniques using water as the non-solvent. Being prepared by dissolving the polymer (PVDF-HFP) in the acetone/water solution with mechanical stirring, the homogenous casting solution was cast onto a clean glass plate. The microporous membranes were directly obtained after the evaporation of the solvent. Their porosities reached 70-90%. The test cells with the gel electrolytes prepared from as-prepared microporous membranes showed stable cycling capacities, indicating that the microporous membrane can be used for the gel electrolyte of lithium batteries. (c) 2005 Elsevier B.V. All rights reserved.
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