| Composite polymer electrolyte membranes supported by non-woven fabrics for lithium-ion polymer batteries |
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| 作者姓名： | TANG Dingguo LIU Jianhong QI Lu CHEN Hui & CI Yunxiang . College of Chemistry and Molecular Engineering Peking University Beijing China . CITIC Guoan Mengguli Power Source Technology Co. Ltd. Beijing China |
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| 作者单位： | TANG Dingguo1，LIU Jianhong2，QI Lu1，CHEN Hui2 & CI Yunxiang1 1. College of Chemistry and Molecular Engineering，Peking University，Beijing 100871，China; 2. CITIC Guoan Mengguli Power Source Technology Co. Ltd.，Beijing 102200，China |
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| 摘 要： | Since marketing in 1999, lithium-ion polymer batteryhas attracted great attention with its various merits such aslight weight, high energy density and good safety. Poly-mer electrolyte membrane, the key material for lith-ium-ion polymer battery, greatly influences the electro-chemical performances, and it is always among the fo-cuses of the lithium-ion polymer battery research field toprepare polymer gel electrolyte membranes of high ionicconductivity and good electrochemical stability1]. …
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| 关 键 词： | 电解液薄膜 锂离子聚合物电池 密度 电化学特性 LiCoO2 非机织织物 |
| 收稿时间： | 12 April 2004 |
Composite polymer electrolyte membranes supported by non-woven fabrics for lithium-ion polymer batteries |
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| TANG Dingguo,LIU Jianhong,QI Lu,CHEN Hui & CI Yunxiang . College of Chemistry and Molecular Engineering,Peking University,Beijing ,China, . CITIC Guoan Mengguli Power Source Technology Co. Ltd.,Beijing ,China.Composite polymer electrolyte membranes supported by non-woven fabrics for lithium-ion polymer batteries[J].Chinese Science Bulletin,2005,50(6):501-504. |
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| Authors: | Dingguo Tang Jianhong Liu Lu Qi Hui Chen Yunxiang Ci |
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| Affiliation: | (1) College of Chemistry and Molecular Engineering, Peking University, 100871 Beijing, China;(2) CITIC Guoan Mengguli Power Source Technology Co. Ltd., 102200 Beijing, China |
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| Abstract: | 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 3.35×10−4 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. |
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| Keywords: | composite polymer electrolyte membrane polymer gel electrolyte lithium-ion polymer battery non-woven fabrics |
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