期刊
NANO ENERGY
卷 10, 期 -, 页码 344-352出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.nanoen.2014.10.012
关键词
Carbon nanotube; Lithium-ion battery; Flexible electrode; Lithium titanate
类别
资金
- Science Foundation of China University of Petroleum, Beijing [2462013YJRC028]
- National Basic Research Program of China (973 Program) [2011CB932602]
- Natural Scientific Foundation of China [21306102]
- Molecularly Engineered Energy Materials, an Energy Frontier Research Center - U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences [DE-SC001342]
Nanostructured Li4Ti5O12/CNT composite particles were synthesized using an aerosol spray drying process followed by thermal annealing. After assembling into CNT networks, lightweight, flexible and binder-free Li4Ti5O12/CNT anodes were fabricated for lithium-ion batteries. Electrodes fabricated from these nanocomposites showed effective electron and ion transport and, more importantly, more robust structure compared to traditional binder-bonded electrodes. The electrodes delivered a high reversible capacity and superior rate performance up to an extremely high rate of 100C. Moreover, ultralong cycling stability was attained through 8000 rapid charge-discharge cycles with 89% capacity retention. These results demonstrate the feasibility of ultrafast batteries. (C) 2014 Elsevier Ltd. All rights reserved.
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