基于多孔黑色TiO2涂层隔膜的锂硫电池性能探究  

An investigation in the performance of lithium-sulfur batteries derived from porous-black-TiO2 coated separator

作　　者：冯明[1] 孙晓东 赵梓宇 孙铭珠 李海波[1] FENG Ming;SUN Xiao-dong;ZHAO Zi-yu;SUN Ming-zhu;LI Hai-bo(Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education,Jilin Normal University,Changchun 130103,China)

机构地区：[1]吉林师范大学功能材料物理与化学教育部重点实验室

出　　处：《分子科学学报》2018年第4期265-269,共5页Journal of Molecular Science

基　　金：国家自然科学基金资助项目(51772126);吉林省科技厅自然科学基金资助项目(20170101062JC)

摘　　要：合成了多孔黑色二氧化钛（PB-TiO2）,并将其作为原料制备得到PB-TiO2涂层隔膜（PB-TiO2@PP）,研究了隔膜对锂硫电池电化学性能的影响.电化学性能测试表明,PBTiO2@PP隔膜能够大幅度提高电池的比容量、有效改善电池的倍率性能和循环稳定性.在1C倍率下,放电容量能够保持在882mAh/g.100次循环之后,容量仍能保持在780mAh/g,容量保持率接近90%.The practical application of lithium sulfur batteries has been impeded severely,due to their low rate capability and poor cycling stability.Herein,we synthesized porous black titanium dioxide（PB-TiO2）,which was used as raw material to prepare the coated separator of PB-TiO2（PB-TiO2@PP）.The influence of separator on the electrochemical performance of lithium sulfur battery was investigated.According to the electrochemical test,PB-TiO2 @PP separator can greatly improve the battery capacity,rate capability and cycling stability.The resulting discharge capacity was maintained at 882 mAh/g at 1 C.The capacity can be maintained at 780 mAh/g,and capacity retention ratio approached 90% after 100 cycles.

关 键 词：锂硫电池 正极材料 储能装置 隔膜 TIO2 

分 类 号：O646[理学—物理化学]