首页> 外文期刊>Nanotechnology >Facile preparation of carbon wrapped copper telluride nanowires as high performance anodes for sodium and lithium ion batteries
【24h】

Facile preparation of carbon wrapped copper telluride nanowires as high performance anodes for sodium and lithium ion batteries

机译:碳包裹铜碲化型纳米线的容易制备作为钠和锂离子电池的高性能阳极

获取原文
获取原文并翻译 | 示例
           

摘要

Uniform carbon wrapped copper telluride nanowires were successfully prepared by using an in situ conversion reaction. The length of these nanowires is up to several micrometers and the width is around 30-40 nm. The unique one dimensional structure and the presence of conformal carbon coating of copper telluride greatly accommodate the large volumetric changes during cycling, significantly increase the electrical conductivity and reduce charge transfer resistance. The copper telluride nanowires show promising performance in a lithium ion battery with a discharge capacity of 130.2 mA h g(-1) at a high current density of 6.0 A g(-1) (26.74 C) and a stable cycling performance of 673.3 mA h g(-1) during the 60th cycle at 100 mA g(-1). When evaluated as anode material for a sodium ion battery, the copper telluride nanowires deliver a reversible capacity of 68.1 mA h g(-1) at 1.0 A g(-1) (similar to 4.46 C) and have a high capacity retention of 177.5 mA h g(-1) during the 500th cycle at 100 mA g(-1).
机译:通过使用原位转化反应成功制备均匀的碳包裹铜碲化纳米线。这些纳米线的长度高达几微米,宽度约为30-40nm。独特的一种尺寸结构和铜碲化型共形碳涂层的存在极大地容纳循环期间的大容量变化,显着提高电导率并降低电荷传递阻力。碲化铜纳米线在锂离子电池中显示出具有130.2mA Hg(-1)的放电容量的有希望的性能,高电流密度为6.0Ag(-1)(26.74c),稳定的循环性能为673.3 ma hg (-1)在60循环期间,在100mA g(-1)。当作为钠离子电池的阳极材料评估时,碲化铜纳米线在1.0Ag(-1)(类似于4.46℃)下提供68.1mA Hg(-1)的可逆容量,并且具有高容量保留177.5 mA Hg(-1)在500循环期间,在100 mA g(-1)。

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