期刊
JOURNAL OF POWER SOURCES
卷 195, 期 9, 页码 2950-2955出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jpowsour.2009.11.003
关键词
Cobalt monoxide; Mesoporous carbon; Anode materials; Lithium-ion batteries
资金
- MOST 973 Program [2006CB705604]
- Shanghai Leading Academic Disciplines [S30109]
- Natural Science Foundation of China [20871081]
- Natural Science Foundation of Shanghai [08ZR1407800, 09ZR1411800]
- Shanghai Municipal Education Commission [09YZ25, 10YZ05]
- Excellent Youth Scholars of Higher Education of Shanghai
A novel ordered mesoporous carbon hybrid composite, CoO/CMK-3, is prepared by an infusing method using Co(NO3)(2)center dot 6H(2)O as the cobalt source. The products are characterized by X-ray diffraction, transmission electron microscopy and N-2 adsorption-desorption analysis techniques. It is observed that the CoO nanoparticles are loaded in the channels of mesoporous carbon. The mesopore structure of CMK-3 is destroyed gradually with increasing of the Coo content. The electrochemical properties of samples as the anode materials for lithium-ion batteries are studied by galvanostatic method. The results show that the CoO/CMK-3 composites have higher reversible capacities (more than 700 mAh g(-1)) and better cycle performance in comparison with the pure mesoporous carbon (CMK-3). Based on the above results, a mechanism is proposed to explain the reason of such a substantial improvement of electrochemical performance in the CoO/CMK-3 composites. (c) 2009 Elsevier B.V. All rights reserved.
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