期刊
JOURNAL OF ALLOYS AND COMPOUNDS
卷 582, 期 -, 页码 563-568出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2013.08.098
关键词
Lithium ion battery; Anodes; Solution combustion; Scalable synthesis
资金
- National Natural Science Foundation of China [NSFC-21373184]
- Zhejiang Provincial Key Lab of Novel Materials for Information Technology
- Key Innovative Team for Magnetic Materials of Zhejiang Province
A facile and scalable process for synthesizing Fe3O4/C composites via a solution combustion technique followed by carbon-coating annealing treatment is developed. The as-prepared Fe3O4/C sample containing about 13.9 wt% carbon displays an attractive cycling performance up to 100 cycles (similar to 470 mA h g(-1) retained at 100 mA g(-1)). In addition, the Fe3O4/C electrode shows good rate capability, a capacity of 530 mA h g(-1) at 92.4 mA g(-1) is still recoverable and sustainable up to 60 cycles after charge/discharge process at high rates. The enhanced electrochemical performance can be attributed to the improved electron transport from the consecutive carbon layer and Li+ diffusion due to the nanoscale nature of the Fe3O4 active materials. The present work represents a successful example of solution combustion technique combined with carbon-coating annealing process for preparing iron oxide-based electrodes in large scale, which can also be extended to prepare other metal oxide/carbon composites. (C) 2013 Elsevier B. V. All rights reserved.
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