天津工业大学学报2024，Vol.43Issue(4)：44-49,6.DOI:10.3969/j.issn.1671-024x.2024.04.008
锂硫电池中CNTs-CNFs夹层对多硫化物的捕获和加速转化机理
Capture and accelerated conversion mechanism of polysulfides by CNTs-CNFs interlayer in lithium-sulfur batteries
摘要
Abstract
In order to effectively suppress the shuttle effect of lithium polysulfides(LiPSs),carbon nanotubes(CNTs)were vertically grown on carbon nanofibers(CNFs)by electrospinning,electrochemical deposition and chemical va-por growth techniques.An ultra-thin,lightweight multi-functional three-dimensional cross-linked carbon nanofibers-carbon nanotubes(CNTs-CNFs)interlayer was developed to study the effect of CNTs-CNFs on the electrochemical properties of lithium-sulfur batteries(LSBs).The research results indicate that the excellent conductivity and abundant pore structure of CNTs-CNFs film provide uniform conductive network for LSBs and adsorption filtration barrier for LiPSs.Compared with the battery without interlayer,the battery with CNTs-CNFs interlayer has better capacity retention and cycle stability.It has an initial specific discharge capacity of 1 296.7 mA·h/g at a current density of 0.2 C,and can still provide a specific discharge capacity of 864.7 mA·h/g after 100 cycles,and the capacity retention rate is 66.68％.关键词
多硫化锂(LiPSs)/碳纳米纤维-碳纳米管(CNTs-CNFs)/夹层/三维多层交联/锂硫电池(LSBs)Key words
lithium polysufide(LiPSs)/carbon nanofibers-carbon nanotubes(CNTs-CNFs)/interlayer/3D multilayer cross-linked/lithium-sulfur batteries(LSBs)分类
化学化工引用本文复制引用
陈磊,袁业辉,宋瑞,张超..锂硫电池中CNTs-CNFs夹层对多硫化物的捕获和加速转化机理[J].天津工业大学学报,2024,43(4):44-49,6.基金项目
中国博士后科学基金资助项目(2018M640240,2019T120189) （2018M640240,2019T120189）
