广州化学2023，Vol.48Issue(6)：31-35,5.DOI:10.16560/j.cnki.gzhx.20230615
C/VN正极材料制备及其锂硫电池性能研究
Design and Preparation of C/VN Cathode and Properties in Lithium Sulfur Batteries
摘要
Abstract
The core-shell ribbon C/VN composite materials were successfully prepared in this article.The morphology and structure of the composite materials were studied through SEM and TEM.The lithium sulfur batteries were assembled by using ZIF-8/V2O5·nH2O,C/V2O5,and C/VN as sulfur containing cathodes,lithium sheets as anode,1.0 M LiTFSI and 2%LiNO3/DME∶DOL(1∶1)as electrolyte for electrochemical testing.The results indicate that the C/VN cathode can significantly improve the electrochemical performance of the cathode and promote electrons transfer during the charging and discharging process.The S@C/VN cathode has an initial specific capacity of 900.4 mAh/g at a current density of 0.5 C.After 500 cycles,it can still provide a specific capacity of 413.9 mAh/g,demonstrating the excellent cycling performance of S@C/VN cathode.关键词
锂硫电池/正极材料/ZIF-8/五氧化二钒/氮化钒/复合材料Key words
lithium sulfur batteries/cathode/ZIF-8/V2O5/VN/composite material分类
化学化工引用本文复制引用
张东文,谢坤,朱文凤,杨威威,刘瑞卿..C/VN正极材料制备及其锂硫电池性能研究[J].广州化学,2023,48(6):31-35,5.基金项目
国家自然科学基金面上项目(22179064) （22179064）
