有色金属材料与工程2025，Vol.46Issue(6)：1-8,8.DOI:10.13258/j.cnki.nmme.20240311001
2D-MOF衍生的CoSe/多孔片层碳载体的制备及其在锂硫电池中的性能研究
Preparation of 2D-MOF derived CoSe/porous carbon sheets and study on performance of lithium-sulfur batteries
摘要
Abstract
With the rapid development of electric vehicles and large-scale energy storage grids,lithium-ion batteries will inevitably face the difficulties of limited energy density,which may fail to meet the increasing demand and lead to rising costs.Lithium-sulfur batteries(LSB)are considered a promising and competitive new energy storage option due to their significant energy density and low cost.However,the commercialization of LSB still faces some obstacles,especially the shuttle effect of lithium polysulfides(LiPSs)and slow redox kinetics.Among them,the 2D structure facilitates the uniform loading of sulfur and rapid transport of lithium ions.Additionally,the uniform loading of CoSe nanoparticles promotes the adsorption and catalysis of polysulfides,thereby improving the electrochemical performance of LSB.Therefore,the composite cathode of CoSe/NHC with sulfur(CoSe/NHC@S)exhibits favorable electrochemical properties.Consequently,the CoSe/NHC@S electrodes demonstrate good electrochemical performance,with a specific capacity of 478.5 mA·h/g over 100 cycles at 0.2 A/g(coulombic efficiency close to 100%).Even at a current density of 1 A/g,the CoSe/NHC@S electrode still maintains a capacity of 274.3 mA·h/g after 500 cycles,with a capacity fading of less than 0.047%per cycle.This work is expected to provide theoretical basis and technical guidance for the optimal design of cathode materials for high-performance lithium-sulfur batteries.关键词
锂硫电池/多硫化物/正极材料/硒化钴/电化学性能Key words
lithium-sulfur battery/polysulfide/anode material/CoSe/electrochemical performance分类
化学化工引用本文复制引用
卢嘉藜,齐子欣,骆赛男..2D-MOF衍生的CoSe/多孔片层碳载体的制备及其在锂硫电池中的性能研究[J].有色金属材料与工程,2025,46(6):1-8,8.基金项目
上海市"超级博士后"激励计划(2022475) （2022475）
上海市启明星人才项目(扬帆专项)(23YF1428900) （扬帆专项）
