首页> 外文期刊>RSC Advances >Fabrication of a novel TiO2/S composite cathode for high performance lithium–sulfur batteries
【24h】

Fabrication of a novel TiO2/S composite cathode for high performance lithium–sulfur batteries

机译:用于高性能锂 - 硫磺电池的新型TiO2 / S复合阴极的制造

获取原文
           

摘要

Sulfur is an attractive cathode material with a high specific capacity of 1675 mA h g ~(?1) , but its rapid capacity decay due to polysulfide dissociation presents a significant technical challenge. Here, we present the fabrication of a TiO _(2) /S composite cathode by encapsulating elemental sulfur into TiO _(2) nanotube hosts for high performance lithium–sulfur batteries. A high capacity of 913 mA h g ~(?1) has been achieved at a rate of 0.2C in the initial cycle for the TiO _(2) /S composite cathode with a sulfur content of 65 wt% and the reversible capacity remains as high as 851 mA h g ~(?1) after 100 cycles. The improvements of electrochemical performances were attributed to the good dispersion of sulfur in the TiO _(2) nanotubes and the excellent adsorbing effect on polysulfides of TiO _(2) .
机译:硫是一种有吸引力的阴极材料,具有1675 mA H g〜(α1)的特定容量,但由于多硫化物解离引起的快速容量衰变具有重要的技术挑战。这里,我们通过将元素硫封装到高性能锂 - 硫电池的TiO _(2)纳米管宿主中,呈现TiO _(2)/ s复合阴极的制造。在TiO _(2)/ S复合阴极的初始循环中以0.2℃的速度为0.2℃,硫含量为65wt%,可逆容量仍然存在913mA Hg〜(α1)的高容量。在100次循环后高达851 mA Hg〜(?1)。电化学性能的改善归因于TiO _(2)纳米管中硫的良好分散,以及对TiO _(2)多硫化物的优异吸附作用。

著录项

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