天丝纤维/芳纶纤维复合隔膜的制备及性能  

Preparation and properties of Tencel fibre/aramid fibre composite separator

作　　者：乔乐帅 张宣宣 解明 杨斌 乔志军 阮殿波 QIAO Leshuai;ZHANG Xuanxuan;XIE Ming;YANG Bin;QIAO Zhijun;RUAN Dianbo(Institute of Advanced Energy Storage Technology and Equipment,Ningbo University,Ningbo Zhejiang 315211,China;Ningbo Enerol Nanotechnology Co.,Ltd.,Ningbo Zhejiang 315000,China;Hesheng Alternative Energy Technology Co.,Ltd.,Ningbo Zhejiang 315040,China)

机构地区：[1]宁波大学先进储能技术与装备研究院,浙江宁波315211 [2]宁波柔创纳米科技有限公司,浙江宁波315000 [3]合盛新能(宁波)科技有限公司,浙江宁波315040

出　　处：《电源技术》2024年第11期2142-2147,共6页Chinese Journal of Power Sources

基　　金：国家自然科学基金面上项目(22078164);浙江省科技计划项目(2022C01072)。

摘　　要：采用造纸法制备了性能优异的天丝原纤化纤维(LF)/芳纶纳米纤维(AP)复合锂离子电池隔膜。结果表明,与商业化聚丙烯隔膜(PP)相比,LF/AP隔膜具有较高的孔隙率(58.3%)、电解液吸液率(112.1%)、离子电导率(0.79 mS/cm)和锂离子迁移数(t_(Li)^(+)=0.69),使得其组装的锂离子电池具有更好的倍率性能和循环稳定性。同时,LF/AP具有优异的热稳定性,极大提高了电池安全性。Tencel fibrillated fiber(LF)/aramid nanofiber(AP)composite lithium-ion battery separator with excellent performance was prepared by papermaking method.The results show that compared with commercial polypropylene(PP)separator,LF/AP separator has higher porosity(58.3%),electrolyte uptake(112.1%),ionic conductivity(0.79 mS/cm)and lithium ion migration number(t_(Li)^(+)=0.69),which makes the assembled lithium ion battery has better rate performance and cycle stability.At the same time,LF/AP has excellent thermal stability,which greatly improves battery safety.

关 键 词：天丝原纤化 芳纶纳米纤维 锂离子电池 隔膜 

分 类 号：TM912[电气工程—电力电子与电力传动]