• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Advanced energy materials >Copolymerization of Sulfur Chains with Vinyl Functionalized Metal?Organic Framework for Accelerating Redox Kinetics in Lithium?Sulfur Batteries
【24h】

Copolymerization of Sulfur Chains with Vinyl Functionalized Metal?Organic Framework for Accelerating Redox Kinetics in Lithium?Sulfur Batteries

机译：Copolymerization of Sulfur Chains with Vinyl Functionalized Metal?Organic Framework for Accelerating Redox Kinetics in Lithium?Sulfur Batteries

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

摘要

Lithium-sulfur batteries (LSBs) are regarded as one of the most promising candidates for energy storage devices. However, the severe shuttling effect of soluble polysulfides (PSs) limits its further application. Metal-organic frameworks (MOFs) have emerged as a new kind of sulfur host for their talents in confining and trapping PSs. However, the shuttle effect has not been fully stressed as a significant drawback for most MOFs that leads to sluggish redox kinetics, resulting in low specific capacity and short lifetime, especially at high sulfur loading. In this work, a MOF-sulfur copolymer (CNT@UiO-66-V-S) is elaborated by copolymerization of sulfur with vinyl functionalized MOFs. Systematic electrochemical experiments and in situ Raman spectroscopy analysis indicate that the cathode exhibits a radical reaction mechanism and can accelerates LiPSs conversion. The CNT@UiO-66-V-S cathode delivers over 100 improved discharge capacity and lowers decay rate at both low and high (5.6 mg cm(-2)) sulfur loadings compared to the physically mixed MOF/S cathode. The strategy of MOF-sulfur copolymerization provides a new solution for promoting reaction kinetics and tackling the shuttle effect, and is expected to inspire the design of advanced sulfur hosts applied for high-performance LSBs.

著录项

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