期刊
JOURNAL OF NANOPARTICLE RESEARCH
卷 16, 期 4, 页码 -出版社
SPRINGER
DOI: 10.1007/s11051-014-2332-3
关键词
Li4Ti5O12; Microwave irradiation; Anode; Lithium-ion batteries; Energy storage
资金
- Natural Science Foundation of China [51002057, 21271078]
- PCSIRT (Program for Changjiang Scholars and Innovative Research Team in University)
- NCET (Program for New Century Excellent Talents in University) [NECT-12-0223]
Nb-doped Li4Ti5O12 (LTO) has been successfully prepared by a fast and economical microwave-assisted solid-state reaction process. The microwave system can significantly shorten the synthesis time to minutes and yield uniform Nb-doped LTO nanocrystals. Results show that the electrode of Nb-doped LTO prepared by microwave irradiation exhibits enhanced electrochemical properties in comparison to the LTO (T) powder prepared by the traditional solid-state reaction. In particular, the Nb-doped LTO electrode with the Nb-containing content of x = 0.03 exhibits the best electrochemical performances. Discharge capacities of 174.7, 157.1, 141.7, and 130.2 mAh g(-1) after 200 cycles are achieved at the charge-discharge rates of 1, 5, 10, and 20 C, respectively. This work provides an effective way for the fast and mass production of Li4Ti5O12-based anode materials with superior rate performance.
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