摘要
随着电子设备和电动汽车对储能设备性能要求的不断提高,锂硫电池因其多电子转化化学赋予的高能量密度受到广泛关注.当前锂硫电池的实用化受到库伦效率低、正极容量快速衰减、负极循环性能差等问题的制约.针对锂硫电池上述瓶颈,设计多功能电解质系统有望大幅提升活性材料的利用效率及循环寿命.本文综述了近年来锂硫电池中多功能隔膜系统的研究进展,具体包括面向抑制副反应的选择性透过隔膜、面向正极的低界面电阻隔膜以及面向稳定负极界面的隔膜.并展望了锂硫电池多功能隔膜系统面临的科学挑战与未来发展的机遇.
As the demand to energy storage devices for portable electronics and electric vehicles increase,lithium-sulfur(Li-S)batteries have attracted much attention for its extremely high energy density.However,the low cottlombic efficiency,rapid fading capacity,and poor cycle performance of lithium anode hinder the demonstration of practical Li-S cells.The advanced functional separator/interlayer system have been proposed and verified to retard the shuttle of polysulfides and extend the cycling life of a Li-S cell.In this review,the progress on multifunctional separators/interlayers for lithium sulfur batteries are summarized,including permselective separator inhibiting polysulfide shuttles,separator with low interracial resistance,and composite electrolyte stabilizing anode and retarding the formation of Li dendrites.New insights into challenge and opportunities of multifunetional separator/interlayer system are also prospected.
作者
黄佳琦
孙滢智
王云飞
张强
Huang Jiaqi;Sun Yingzhi;Wang Yunfei;Zhang Qiang(Advanced Research Institute for Multidisciplinary Science,School of Materials Science&Engineering,Beijing Institute ofTechnology,Beijing 100081;Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology,Department of Chemical Engineering,"Tsinghua University,Beijing 100084;School of Materials Science and Engineering,Tsinghua University,Beijing 100084)
出处
《化学学报》
SCIE
CAS
CSCD
北大核心
2017年第2期173-188,共16页
Acta Chimica Sinica
基金
国家重点研发计划(No.2016YFA0202500)
国家自然科学基金(Nos.21306103
21422604)
清华大学自主科研计划(No.20161080166)资助~~
关键词
锂硫电池
隔膜
电解质
纳米碳
复合材料
金属锂
lithium-sulfur batteries
separator/interlayer
electrolyte
nanocarbon
composite electrodes
Li anode
