• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>RSC Advances >Facile synthesis of a nickel vanadate/Ni composite and its electrochemical performance as an anode for lithium ion batteries
【24h】

Facile synthesis of a nickel vanadate/Ni composite and its electrochemical performance as an anode for lithium ion batteries

机译：镍钒酸盐/ Ni复合材料的容易合成及其电化学性能作为锂离子电池阳极

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

摘要

Ni _(3) V _(2) O _(8) /Ni composites were prepared by a simple one-step hydrothermal route and they showed superior electrochemical performance as anode materials for Li-ion batteries. They had a unique three-dimensional (3D) architecture, in which interlaced Ni _(3) V _(2) O _(8) nanosheets and nanoflakes were uniformly grown on Ni foam. The Ni _(3) V _(2) O _(8) /Ni composites delivered a discharge capacity of 1626.1 in the initial cycle at a specific current of 200 mA g ~(?1) , maintaining 1286.8 mA h g ~(?1) after 100 cycles. After 600 cycles at 1000 mA g ~(?1) , the discharge capacity was maintained at 941.3 mA h g ~(?1) , and even when the current was 10 A g ~(?1) , a discharge capacity of 477.7 mA h g ~(?1) was achieved. The excellent lithium storage performance of the Ni _(3) V _(2) O _(8) /Ni composites could be attributed to their unique 3D architecture, favorable electrochemical reconstruction in cycling and their intimate contact with the Ni foam substrates, which offered fast electrical and ionic transport, provided a sufficient electrode/electrolyte contact area and facilitated accommodation of strain during lithiation/delithiation cycling. In addition, details of the electrochemical reaction process of Ni _(3) V _(2) O _(8) were carefully investigated to discover the conversion and intercalation reaction routes. Such novel Ni _(3) V _(2) O _(8) /Ni composites might provide insight for the use of metal vanadate as an energy storage material.
机译：通过简单的一步水热路线制备Ni _（3）v _（2）o _（8）/ Ni复合材料，它们显示出优异的电化学性能作为锂离子电池的阳极材料。它们具有独特的三维（3D）架构，其中交错的Ni _（3）v _（2）o _（2）o _（8）纳米蛋白酶和纳米薄物在Ni泡沫上均匀生长。 NI _（3）V _（2）O _（8）/ Ni复合材料在200mA G〜（α1）的特定电流下的初始循环中输出了1626.1的放电容量，保持1286.8 mA hg〜（？ 1）100次循环后。在1000 mA g〜（α1）的600次循环后，放电容量保持在941.3 mA hg〜（α1），即使当电流为10 a g〜（Δ1），放电容量为477.7 ma hg 〜（？1）实现。 Ni _（3）V _（2）O _（8）/ Ni复合材料的优异锂储存性能可归因于其独特的3D架构，循环中有利的电化学重建及其与Ni泡沫基板的亲密接触，提供快速电气和离子运输，提供足够的电极/电解质接触面积，并且在锂化/脱脂循环期间促进的应变容纳。另外，仔细研究了Ni _（3）V _（2）o _（8）的电化学反应方法的细节，以发现转化和嵌入反应途径。这种新颖的Ni _（3）V _（2）O _（8）/ Ni复合材料可以提供用于使用金属钒酸盐作为储能材料的见解。

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