为了解决液态电解质锂离子电池存在的安全性问题,以偏氟乙烯和六氟丙烯的共聚物(PVDF-HFP)为基体,通过加入高氯酸锂(LiC1O4)、增塑剂(碳酸丙烯酯和碳酸二甲酯)、纳米二氧化硅等,制备出了具有高电导率的复合凝胶聚合物电解质.用X射线衍射仪测试聚合物电解质的结构,用交流阻抗法测定其电导率,用线性伏安扫描法研究了该聚合物电解质体系的电化学稳定性,并以其为电解质制备成锂离子电池进行充放电测试.结果表明,在20℃时复合凝胶聚合物电解质的电导率最高可达7.56×10-3S/cm,该电解质在4.6 V以下电化学窗口稳定,以其为电解质的锂离子电池具有良好的电化学性能,说明纳米SiO2/LiC1O4/PVDF-HFP复合凝胶聚合物电解质能满足锂离子电池的应用.
参考文献
| [1] | Kwang Man-Kima,Jang Myoun-Kob,Parka Nam-Gyu,Kwang Sun-Ryua,Soon Ho-Chang.Characterization of poly (vinylidenefluoride-co-hexafluoropropylene)-based polymer electrolyte filled with rutile TiO2 nanoparticles[J].Solid State Ionics,2003,161:121-131. |
| [2] | Stephan A Manuel,Teeters Dale.Charge-discharge studies on a lithium cell composed of PVDF-HFP polymer membranes prepared by phase inversion technique with a nanocomposite cathode[J].Journal of Power Sources,2003,119:460-464. |
| [3] | Stephan A Manuel,Renganathan N G,Gopukumara S,Dale-Teeters.Cycling behavior of poly(vinylidene fluoride-hexafluoro propylene)(PVDF-HFP)membranes prepared by phase inversion method[J].Materials Chemistry and Physics,2004,85:6-11. |
| [4] | Pasquier A Du,Warren P C,Culver D,Gozdz A S,Amatucci G G,Tarascon J M.Plastic PVDF-HFP electrolyte laminates prepared by a phase-inversion process[J].Solide State Ionics,2000,135:249-257. |
| [5] | Stephan A Manuel.Review on gel polymer electrolytes for lithium batteries[J].European Polymer,2006,42:21-42. |
| [6] | 王严杰,庞明杰,杨光义,潘颐.PEO-LiC1O4-Li1.3Al0.3Ti1.7(PO4)3复合聚合物电解[J].复合材料学报,2005,22(1):85-91.Wang Yanjie,Pang Mingjie,Yang Guangyi,Pan Yi.Conductivity studies on a new composite polymer electrolyte PEOLiC1O4-Li1.3Al0.3Ti1.7(PO4)3[J].Acta Materiae Compositae Sinica,2005,22(1):85-91. |
| [7] | Sannier L,Bouchet R,Grugeon S,Naudin E,Vidal E,Tarascon J M.Room temperature lithium metal batteries based on a new gel polymer electrolyte membrane[J].Journal of Power Sources,2005,144:231-237. |
| [8] | 戴潇燕,潘春跃,冯庆,巢猛.原位复合法制备TiO2/(PEO)8LiC1O4聚合物电解质[J].复合材料学报,2006,23(5):75-78.Dai Xiaoyan,Pan Chunyue,Feng Qing,Chao Meng.TiO2/(PEO)8LiC1O4 composite polymer electrolytes prepared by insitu method[J].Acta Materiae Compositae Sinica,2006,23(5):75-78. |
| [9] | 庞明娟,唐定国,其鲁,晨晖.锂离子二次电池用PVDFHFP/PAMA共混物摹聚合物电解质膜的研制[J].高分子学报,2005(3):448-452.Pang Mingjuan,Tang Dingguo,Qi Lu,Chen Hui.Polymer electrolytes based on PVDF-HFP/PMMA blends for rechargeable battery lithium-polymer batteries[J].Acta Polymerica Sinica,2005(3):448-452. |
| [10] | Stephan A Manuel,Teeters Dale.Characterization of PVDFHFP polymer membranes prepared by phase inversion techniques Ⅰ:Morphology and charge/discharge studies[J].Electrochimiea Aeta,2003,48:2143-2148. |
| [11] | Preta I F C,Sakata S K,Gareia G,Zimmermann J P,Giovedi F G C.Thermal behavior of polyacrylonitrile polymers synthesized under different conditions and commoner compositions[J].Journal of Thermal Analysis and Calorimetry,2007,87(3):657-659. |
| [12] | 李景虹.先进电池材料[M].北京:化学工业出版社,2004:331-361. |
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