| 尿素作为造孔剂对聚乙烯支撑的PAMS聚合物电解质性能的改进 |
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| 引用本文： | 陈朗,饶睦敏,李伟善,许梦清,廖友好,谭春林,易金.尿素作为造孔剂对聚乙烯支撑的PAMS聚合物电解质性能的改进[J].物理化学学报,2011,27(7):1689-1694. |
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| 作者姓名： | 陈朗 饶睦敏 李伟善 许梦清 廖友好 谭春林 易金 |
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| 作者单位： | 1. School of Chemistry and Environment, South China Normal University, Guangzhou 510006, P. R. China;
2. Key Laboratory of Electrochemical Technology on Energy Storage and Power Generation of Guangdong Higher Education Institutes, South China Normal University, Guangzhou 510006, P. R. China;
3. Engineering Research Center of Materials and Technology for Electrochemical Energy Storage (MOE), South China Normal University, Guangzhou 510006, P. R. China |
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| 基金项目： | China(10351063101000001).
国家自然科学基金，广东省自然科学基金 |
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| 摘 要： | 采用乳液聚合法合成聚(丙烯腈-甲基丙烯酸甲酯-苯乙烯) (P(AN-MMA-ST)或者共聚物PAMS), 并利用尿素作为造孔剂制备了聚乙烯(PE)支撑的PAMS聚合物膜(PE-PAMS-U)及凝胶聚合物电解质(GPE). 利用傅里叶变换红外(FTIR)光谱、X射线衍射(XRD)、扫描电子显微镜(SEM)、热重(TG)分析、线性电位扫描(LSV)、电化学阻抗谱(EIS)以及充放电等方法对PAMS聚合物以及PE支撑的聚(丙烯腈-甲基丙烯酸甲酯-苯乙烯) (PE-PAMS)聚合物隔膜及凝胶聚合物电解质的性能进行了研究. 结果表明, 利用尿素作为造孔剂可以提高PE-PAMS凝胶聚合物的性能. 由于尿素的加入, 聚合物膜呈现均匀的微孔结构, 室温下的电导率从1.1×10-3 S·cm-1提高到2.15×10-3 S·cm-1. 同时, 锂电极/聚合物电解质界面上的电荷传递电阻也从480 Ω·cm2降低到 250 Ω·cm2. 电化学稳定窗口为5.0 V. 电池(Li/PE支撑的GPE/LiCoO2)的测试证明, 用尿素作为造孔剂的凝胶聚合物锂离子电池表现出优良的倍率性能和循环性能.
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| 关 键 词： | 锂离子电池 凝胶聚合物电解质 聚(丙烯腈-甲基丙烯酸甲酯-苯乙烯) 尿素 造孔剂 |
| 收稿时间： | 2011-01-18 |
| 修稿时间： | 2011-05-20 |
Performance Improvement of Polyethylene-Supported PAMS Electrolyte Using Urea as Foaming Agent |
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| CHEN Lang,RAO Mu-Min,LI Wei-Shan,XU Meng-Qing,LIAO You-Hao,TAN Chun-Lin,YI Jin.Performance Improvement of Polyethylene-Supported PAMS Electrolyte Using Urea as Foaming Agent[J].Acta Physico-Chimica Sinica,2011,27(7):1689-1694. |
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| Authors: | CHEN Lang RAO Mu-Min LI Wei-Shan XU Meng-Qing LIAO You-Hao TAN Chun-Lin YI Jin |
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| Institution: | 1. School of Chemistry and Environment, South China Normal University, Guangzhou 510006, P. R. China;
2. Key Laboratory of Electrochemical Technology on Energy Storage and Power Generation of Guangdong Higher Education Institutes, South China Normal University, Guangzhou 510006, P. R. China;
3. Engineering Research Center of Materials and Technology for Electrochemical Energy Storage (MOE), South China Normal University, Guangzhou 510006, P. R. China |
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| Abstract: | Poly(acrylonitrile-methyl methacrylate-styrene)(PAMS) was synthesized by emulsion polymerization and a polyethylene(PE)-supported membrane was prepared using urea as foaming agent (PE-PAMS-U).The structure and performance of the PAMS copolymer,PE-PAMS-U membrane and corresponding gel polymer electrolyte(GPE) were characterized by Fourier transform infrared(FTIR) spectroscopy,scanning electron microscopy(SEM),X-ray diffraction(XRD),thermogravimetry(TG),linear sweep voltammetry(LSV),electrochemical impedance ... |
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| Keywords: | Lithium ion battery Gel polymer electrolyte Poly((acrylonitrile-methyl methacrylate-styrene) Urea Foaming agent |
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