• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Advanced Functional Materials >Functional Carbons Remedy the Shuttling of Polysulfides in Lithium-Sulfur Batteries: Confining, Trapping, Blocking, and Breaking up
【24h】

Functional Carbons Remedy the Shuttling of Polysulfides in Lithium-Sulfur Batteries: Confining, Trapping, Blocking, and Breaking up

机译：功能性碳补救了锂-硫电池中多硫化物的穿梭：限制，诱捕，阻塞和分解

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Carbon materials are usually used as the sulfur host in rechargeable lithium-sulfur (Li-S) batteries that are considered as promising electrochemical energy storage systems. However, the shuttling caused by the soluble lithium polysulfides (LiPSs) formed by the reaction of Li and sulfur causes rapid capacity fade and low sulfur utilization, greatly hindering their practical use. The carbon materials can also be tailored to prevent LiPS shuttling because of their abundant porosity and controllable surface chemical properties, which are divided into four specific functions: confining, trapping, blocking, and breaking up. Confinement means physically confining the LiPSs in pores in the carbon while trapping refers to chemical adsorption on the carbon surface to restrict their diffusion and promote their transformation to insoluble Li2S2/Li2S. Blocking means placing a barrier in the cells to inhibit LiPS diffusion to the anode, while breaking up means decreasing the size of the sulfur moiety to increase its affinity with carbons. The advantages and disadvantages of functional carbons in relation to these four functions are summarized and the specific ways to achieve them are highlighted. The design of advanced carbons with synergistic functions is discussed and some perspectives on the future development of carbons in Li-S batteries are given.
机译：碳材料通常用作可再充电锂硫（Li-S）电池中的硫主体，被认为是有前途的电化学储能系统。然而，由Li和硫的反应形成的可溶性多硫化锂（LiPS）引起的穿梭导致容量快速下降和硫利用率低，极大地阻碍了它们的实际使用。碳材料还可以量身定制以防止LiPS穿梭，因为它们具有丰富的孔隙率和可控制的表面化学特性，这些特性分为四个特定功能：限制，捕获，阻塞和分解。限制是指将LiPS物理限制在碳的孔中，而捕集是指化学吸附在碳表面上以限制其扩散并促进其转化为不溶性Li2S2 / Li2S。阻断是指在电池中放置一个屏障以抑制LiPS扩散到阳极，而分裂是指减小硫部分的大小以增加其与碳的亲和力。总结了功能碳相对于这四个功能的优缺点，并重点介绍了实现这些功能的具体方法。讨论了具有协同功能的高级碳的设计，并给出了有关锂硫电池中碳未来发展的一些观点。

著录项

  • 来源
    《Advanced Functional Materials》 |2018年第38期|1800508.1-1800508.21|共21页
  • 作者

    Shi Huifa; Lv Wei; Zhang Chen; Wang Da-Wei; Ling Guowei; He Yanbing; Kang Feiyu; Yang Quan-Hong;

  • 作者单位

    Tsinghua Univ, Grad Sch Shenzhen, Shenzhen Key Lab Graphene Based Mat, Engn Lab Functionalized Carbon Mat, Shenzhen 518055, Peoples R China;

    Tsinghua Univ, Grad Sch Shenzhen, Shenzhen Key Lab Graphene Based Mat, Engn Lab Functionalized Carbon Mat, Shenzhen 518055, Peoples R China;

    Tianjin Univ, Sch Marine Sci & Technol, Tianjin 300072, Peoples R China;

    Univ New South Wales, Sch Chem Engn, Sydney, NSW 2052, Australia;

    Tianjin Univ, Sch Marine Sci & Technol, Tianjin 300072, Peoples R China;

    Tsinghua Univ, Grad Sch Shenzhen, Shenzhen Key Lab Graphene Based Mat, Engn Lab Functionalized Carbon Mat, Shenzhen 518055, Peoples R China;

    Tsinghua Univ, Grad Sch Shenzhen, Shenzhen Key Lab Graphene Based Mat, Engn Lab Functionalized Carbon Mat, Shenzhen 518055, Peoples R China;

    Tianjin Univ, Sch Chem Engn & Technol, Nanoyang Grp, Tianjin 300351, Peoples R China;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    functional carbon materials; lithium-sulfur battery; polysulfide shuttling; structure design; surface modification;

    机译：功能性碳材料锂硫电池多硫化物穿梭结构设计表面改性;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号