期刊
JOURNAL OF MATERIALS CHEMISTRY
卷 22, 期 2, 页码 425-431出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c1jm14701c
关键词
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资金
- Natural Science Foundation of China [50825203, 51002057]
- 863 program [2009AA03Z225]
- Natural Science Foundation of Hubei Province [2008CDA026]
- PCSIRT (Program for Changjiang Scholars and Innovative Research Team in University)
- Fundamental Research Funds for the Central Universities [HUST: 2010QN007]
A composite of ultrafine MoO2 nanoparticles homogeneously distributed in a carbon matrix has been fabricated on a large scale by an easy impregnation-reduction-carbonization route. Firstly, a cotton/PMA composite was formed by incorporating phosphomolybdate clusters into a cotton framework. Then it was treated in a H-2/Ar atmosphere at 500 degrees C for 5 h and in situ reduced/carbonized into a black monolith comprising ultrafine MoO2 nanoparticles (<2 nm) embedded in the carbon matrix. The electrochemical tests demonstrate that the as-formed MoO2/C hybrid exhibits high capacity and excellent capacity retention as an anode material for lithium-ion batteries. The specific discharge capacity is as high as 1207 mA h g(-1) in the first cycle and 734 mA h g(-1) over 350 cycles at a current density of 50 mA g(-1).
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