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.
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)
出处
《电源技术》
CAS
北大核心
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)。
关键词
天丝原纤化
芳纶纳米纤维
锂离子电池
隔膜
Tencel fibrillation
aramid nanofiber
lithium ion battery
separator
