二维蒙脱土-碳纳米管交联多孔网络中间层对多硫化物穿梭的抑制作用
A 2D montmorillonite-carbon nanotube interconnected porous network that prevents polysulfide shuttling
摘要
Abstract
A commercial polypropylene(PP)separator was modified by a one-dimensional carbon nanotube(CNT)and two-di-mensional montmorillonite(MMT)hybrid material(CNT-MMT).Because of the high electron conductivity of the CNTs,and the strong polysulfide(LiPS)adsorption ability and easy lithium ion transport through MMT,the interconnected porous CNT-MMT in-terlayer with excellent structural integrity strongly suppresses LiPS shuttling while maintaining high lithium-ion transport,producing a high utilization of the active sulfur.Lithium-sulfur batteries assembled with this interlayer have a high lithium-ion diffusion coeffi-cient,a high discharge capacity and stable cycling performance.They had an initial specific capacity of 1373 mAh g-1 at 0.1 C,and a stable cycling performance with a low decay rate of 0.062%per cycle at 1 C after 500 cycles.关键词
锂硫电池/多硫穿梭/二维蒙脱土/碳纳米管/阻挡层Key words
Lithium-sulfur batteries/Polysulfide shuttling/Two-dimensional montmorillonite/Carbon nanotube/Interlayer intro-duction分类
通用工业技术引用本文复制引用
周明霞,周文华,龙翔,朱绍宽,徐鹏,欧阳全胜,石斌,邵姣婧..二维蒙脱土-碳纳米管交联多孔网络中间层对多硫化物穿梭的抑制作用[J].新型炭材料（中英文）,2023,38(6):1070-1079,10.基金项目
This work was supported by National Natural Science Foundation of China(51972070,52372185 and 52062004),Guizhou Provincial High Level In-novative Talents Project(QKHPTRC-GCC[2022]013-1),Innovation Team for Advanced Electrochemical Energy Storage Devices and Key Materials of Guizhou Provincial Higher Education Institutions(Qi-anJiaoJi[2023]054),Guizhou Provincial Science and Technology Projects(QKHJC[2020]1Z042,QKHZC[2021]YB317)and Cultivation Project of Guizhou University(GDPY[2019]01). 国家自然科学基金(51972070、52372185 和 52062004) （51972070,52372185 and 52062004）
贵州省高层次创新型人才(黔科合平台人才-GCC[2022]013-1) （黔科合平台人才-GCC[2022]013-1）
贵州省教育厅高校科技创新团队(黔教技[2023]054 号) （黔教技[2023]054 号）
贵州省科技计划项目(黔科合基础[2020]1Z042 （）
黔科合支撑[2021]一般317)和贵州大学培育项目(贵大培育[2019]01号). （贵大培育[2019]01号）
