Metastable amorphous chromium-vanadium oxide nanoparticles with superior performance as a new lithium battery cathode

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• 作者：Jinzhi Sheng (1)
  Qidong Li (1)
  Qiulong Wei (1)
  Pengfei Zhang (1)
  Qinqin Wang (1)
  Fan Lv (1)
  Qinyou An (1)
  Wei Chen (1)
  Liqiang Mai (1)
  
• 关键词：Cr2V4O13 ; nanoparticles ; metastable amorphous structure ; lithium battery
• 刊名：Nano Research
• 出版年：2014
• 出版时间：November 2014
• 年：2014
• 卷：7
• 期：11
• 页码：1604-1612
• 全文大小：2,304 KB
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  Qiulong Wei (1)
  Pengfei Zhang (1)
  Qinqin Wang (1)
  Fan Lv (1)
  Qinyou An (1)
  Wei Chen (1)
  Liqiang Mai (1)
  
  1. State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, WUT-Harvard Joint Nano Key Laboratory, Wuhan University of Technology, Wuhan, 430070, China</sub>
  
• ISSN：1998-0000

文摘

The main drawbacks of vanadium oxide as a cathode material are its low conductivity, low practical capacity and poor cycling stability. Adding Cr can improve its conductivity and a metastable amorphous state may provide higher capacity and stability. In this work, metastable amorphous Cr-V-O nanoparticles have been successfully prepared through a facile co-precipitation reaction followed by annealing treatment. As a cathode material for lithium batteries, the metastable amorphous Cr-V-O nanoparticles exhibit high capacity (260 mAh/g at 100 mA/g between 1.5- V), low capacity loss (more than 80% was retained after 200 cycles at 100 mA/g) and high rate capability (up to 3 A/g).