• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>RSC Advances >Chemically anchored NiOx–carbon composite fibers for Li-ion batteries with long cycle-life and enhanced capacity
【24h】

Chemically anchored NiOx–carbon composite fibers for Li-ion batteries with long cycle-life and enhanced capacity

机译：用于锂离子电池的化学锚固的NiOx - 碳复合纤维，具有长循环寿命和增强的容量

获取原文
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

N-doped carbon fibers and their composites have drawn much attention because of their wide application in energy storage. In this paper, NiO _( x ) nanoparticles are anchored on N-doped carbon fibers by chemical bonds with controlled concentration of NiO _( x ) , and the fibers interweave into hierarchical structured networks. It is demonstrated that these NiO _( x ) nanoparticles consisted of both NiO and Ni ~(0) other than a single phase. As binder-free anodes for lithium-ion batteries, the NiO _( x ) –C fiber networks obtained at 650 °C with 9.2 wt% NiO _( x ) could deliver a specific capacity of 676 mA h g ~(?1) after 200 cycles at a current density of 500 mA g ~(?1) . It is also found that the storage and rate capacities of the networks are dependent on both the content of NiO _( x ) and the annealing temperature. The improved lithium-ion storage properties can be ascribed to the intimate connection between NiO _( x ) and the highly conductive network of carbon fibers through chemical bonds.
机译：正掺杂的碳纤维及其复合材料由于它们在储能中的广泛应用而引起了很多关注。在本文中，通过具有控制浓度的NiO _（x）的化学键，NiO _（x）纳米颗粒在N掺杂的碳纤维上锚定，并且纤维交织成分级结构网络。结果证明，这些NIO _（X）纳米颗粒由单相之外的NiO和Ni〜（0）组成。作为锂离子电池的无粘合剂阳极，在650℃下获得的NIO _（X）-C纤维网络，9.2wt％nio _（x）可以提供676 mA hg〜（？1）的特定容量电流密度为500 mA g〜（α1）的200个循环。还发现网络的存储和速率容量取决于NIO _（x）的含量和退火温度。通过化学键可以将改进的锂离子储存性能归因于NIO _（X）和碳纤维的高导电网络之间的贴心连接。

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