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  4. 动力锂离子电池隔膜的研究进展

材料导报, 2011, 25(9): 44-50.

动力锂离子电池隔膜的研究进展

孙美玲 1, , 唐浩林 2, , 潘牧 3,

1.武汉理工大学材料复合新技术国家重点实验室,武汉,430070

2.武汉理工大学材料复合新技术国家重点实验室,武汉,430070

3.武汉理工大学材料复合新技术国家重点实验室,武汉,430070

基金项目:   中央高校基本科研业务费专项资金项目(201-la-055)   国家自然科学基金(50802072)   "863"项目(2009AA034400)  

关键词： 动力锂离子电池 , 隔膜 , 孔隙率 , 浸润性 , 热安全温度

A Review on the Separators of Power Li-ion Batteries

从孔隙率、浸润性、强度、热尺寸稳定性、热关闭温度和热熔化温度评述了锂离子电池隔膜的研究进展,认为平衡并同时提高隔膜的性能和安全性是动力锂电池隔膜重要的研究方向.目前,采用接枝官能基团以及添加亲水物质的方法可以改善膜的浸润性;不同熔点的聚合物复合以及采用高结晶度聚合物均可改善隔膜的热关闭温度和热熔化温度.采用一种多孔基体材料,如无纺布或电纺纤维作为增强基体,可以保证膜的强度、尺寸稳定性和热熔化温度;采用其它的聚合物作为成孔材料,可以改善膜的孔隙率和浸润性,是同时提高隔膜的性能和安全性的有效手段.

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