期刊
JOURNAL OF ALLOYS AND COMPOUNDS
卷 688, 期 -, 页码 605-610出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2016.07.237
关键词
Lithium ion battery; Carbon matrix; Anode; Iron oxides; Long life performance
资金
- National Natural Science Foundation of China [21501108, 21271115]
- Doctoral Foundation of Shandong Province [BS2014NJ015, BS2014CL015]
- Scientific Research Staring Foundation of Qufu Normal University [BSQD20130118]
- Jiangsu Provincal Natural Science Foundation [BK20160941]
Three-dimensional (3D) Fe3O4/carbonaceous matrix composites are successfully assembled via a facile hydrothermal treatment of precursor followed by heat-decomposition process. Cellulose acetate (CA), a kind of polymer, as carbon source, can form a flexible and uniform 3D carbon matrix after carbonation at 500 degrees C, in addition of the highly degree uniformity with active Fe3O4 particles. When applied as an anode for lithium-ion batteries, these 3D Fe3O4/C composites exhibit superior electrochemical performance after prolonged cycling at high rates (similar to 790 mA h g(-1) at 2C after 1000 cycles) and good rate capability at changing rates of 0.1C-3C-0.1C. The excellent performance observed from the electrochemical measurement can be attributed to the 3D architecture and the micro-carbonaceous matrix, both of which play important buffering role in the balance of volume variation and provide an excellent conductive matrix for high rate charge-discharge process. (C) 2016 Elsevier B.V. All rights reserved.
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