期刊
NANO RESEARCH
卷 7, 期 11, 页码 1604-1612出版社
TSINGHUA UNIV PRESS
DOI: 10.1007/s12274-014-0520-1
关键词
Cr2V4O13; nanoparticles; metastable amorphous structure; lithium battery
类别
资金
- National Basic Research Program of China [2013CB934103, 2012CB933003]
- National Natural Science Foundation of China [51272197, 51302203]
- National Science Fund for Distinguished Young Scholars of China
- International Science and Technology Cooperation Program of China [2013DFA50840]
- Fundamental Research Funds for the Central Universities [2013-ZD-7, 2013-IV-131, 2014-VII-007]
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 1.5-4 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).
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