| 锂离子电池用无纺布支撑聚合物复合膜的制备 |
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| 引用本文： | 宋兆爽,邱景义,马建伟,其鲁.锂离子电池用无纺布支撑聚合物复合膜的制备[J].北京大学学报(自然科学版),2006,42(Z1). |
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| 作者姓名： | 宋兆爽 邱景义 马建伟 其鲁 |
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| 作者单位： | 北京大学化学与分子工程学院,应用化学系,新能源材料与技术实验室,北京,100871 |
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| 摘 要： | 采用γ射线辐射接枝的方法在无纺布纤维表面接枝苯乙烯。将接枝改性后的无纺布浸渍于丁酮/PVDF-HFP/丁醇混合液中,真空干燥后制得多孔的无纺布支撑聚合物电解质复合膜。以其为隔膜组装了聚合物锂离子电池(LiMn2O4/无纺布聚合物复合膜/Li),进行充放电测试。研究结果表明,无纺布聚合物复合膜具有合适的厚度,一定的机械强度。辐射接枝提高了无纺布与聚合物混合液的结合力,在电池的充放电循环过程中不易发生短路,电池的容量和循环性能得到显著提高。
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| 关 键 词： | 多孔聚合物复合膜 无纺布 辐射接枝 聚合物锂离子电池 |
Preparation of Polymer Electrolyte Membranes Supported by Non-Woven Fabrics for Lithium-Ion Polymer Batteries |
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| SONG Zhaoshuang,QIU Jingyi,MA Jianwei,Qilu.Preparation of Polymer Electrolyte Membranes Supported by Non-Woven Fabrics for Lithium-Ion Polymer Batteries[J].Acta Scientiarum Naturalium Universitatis Pekinensis,2006,42(Z1). |
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| Authors: | SONG Zhaoshuang QIU Jingyi MA Jianwei Qilu |
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| Abstract: | Non-woven fabrics were modified via radiation-induced grafting of styrene (St ) and then immersed in the mixed solution of butanone / PVDF-HFP / butanol to prepare porous composite polymer electrolyte membranes. The obtained composite membranes supported by non-woven fabrics have appropriate thickness and good mechanical strength. Radiation grafting enhances the interaction between non-woven fabrics and PVdF-HFP-based polymer mixtures. Finally, the lithium-ion battery assembled with the obtained membrane was tested, which exhibits higher capability and better cycling performance. |
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| Keywords: | porous composite polymer electrolyte membrane non-woven fabrics radiation-induced grafting lithium-ion polymer battery |
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