陕西科技大学学报2024，Vol.42Issue(6)：112-118,7.
MoO2/ZnS复合材料改性隔膜实现锂硫电池稳定的高倍率性能
MoO2/ZnS composites material modified separator achieves stable high rate performance of Li-S battery
摘要
Abstract
Lithium-sulfur batteries are considered as one of the most promising next-genera-tion rechargeable batteries due to their high energy density and cost-effectiveness.However,the shuttle effect of polysulfides significantly decreases the cycle life and stability of Li-S bat-teries,hindering their practical applications.The separator modified by inorganic metal com-pound materials can not only inhibit the shuttle effect of polysulfides,some of its special crystal planes can also accelerate the redox reaction kinetics of polysulfides.In this paper,the MoO2/ZnS nanocomposites were synthesized by growing spherical MoO2 on the surface of compass-shaped ZnS.MoO2 possesses strong adsorption effect towards polysulfides and ZnS exhibits excellent electronic conductivity,accelerating the electron conduction efficiency and redox rate.The cell with MoO2/ZnS separator exhibits a high specific capacity of 690 mAh g-1.At a high current density of 5 C,the discharge specific capacity can still be maintained after 1 000 cy-cles,with an average capacity decay rate of 0.014％,showing excellent cyclic stability and rate performance.关键词
MoO2/ZnS/复合材料/穿梭效应/隔膜改性Key words
MoO2/ZnS/composite material/shuttle effect/separator modification分类
信息技术与安全科学引用本文复制引用
许占位,郭隆华,任宇川,赵家棋,李嘉胤,李亮,马维鹏,张科..MoO2/ZnS复合材料改性隔膜实现锂硫电池稳定的高倍率性能[J].陕西科技大学学报,2024,42(6):112-118,7.基金项目
国家自然科学基金项目(52073166) （52073166）
陕西省自然科学基金项目(2023-JC-YB-302) （2023-JC-YB-302）
