Composite polymer electrolyte membranes supported by non-woven fabrics for lithium-ion polymer batteries
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- 作者：Dingguo Tang (1)
Jianhong Liu (2)
Lu Qi (1)
Hui Chen (2)
Yunxiang Ci (1) - 关键词：composite polymer electrolyte membrane ; polymer gel electrolyte ; lithium ; ion polymer battery ; non ; woven fabrics
- 刊名：Chinese Science Bulletin
- 出版年：2005
- 出版时间：March 2005
- 年：2005
- 卷：50
- 期：6
- 页码：501-504
- 全文大小：1326KB
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9. Zhang, B. W., Qi, L., Chen, H. et al., Preparation and properties of the composite microporous PVDF-HFP/SiO2 based polymer electrolytes, Electrochemistry (in Chinese), 2003, 9(4): 428-32. - 作者单位：Dingguo Tang (1)
Jianhong Liu (2)
Lu Qi (1)
Hui Chen (2)
Yunxiang Ci (1)
1. College of Chemistry and Molecular Engineering, Peking University, 100871, Beijing, China
2. CITIC Guoan Mengguli Power Source Technology Co. Ltd., 102200, Beijing, China - ISSN：1861-9541
文摘
Poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP) is one of the most popular polymers for polymer electrolyte membranes because of its excellent operating characteristics and superior electrochemical properties. The electrochemical performances of polymer electrolyte membrane can be enhanced by evenly dispersing nano-meter SiO2 particles in the polymer. In this paper, non-woven fabrics were immersed in the mixed solution of PVDF-HFP/ SiO2/butanone/butanol/plasticizer, and then dried in a vacuum oven to remove the solvents and the plasticizer and to make porous composite polymer electrolyte membranes. The prepared composite membranes supported by non-woven fabrics boast good mechanical strength and excellent electrochemical properties: the electrochemical stability window is 4.8 V vs. Li+/Li, and the ionic conductivity is 3.35×10? S/cm (around 60% of that of a common PE membrane) at room temperature. The lithium-ion polymer battery assembled by the composite membrane exhibits high rate capability and excellent cycling performance.