期刊
MATERIALS CHEMISTRY AND PHYSICS
卷 183, 期 -, 页码 152-157出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.matchemphys.2016.08.013
关键词
Lithium-ion batteries; Cathode; alpha-LiFeO2; Rheological method
资金
- Special Fund for Basic Scientific Research of Central Colleges, South-Central University for Nationalities [CZZ10002]
- National Natural Science Foundation of China [21503282]
In this paper, rheological phase method has been successfully applied to synthesize nanosized alpha-LiFeO2, a promising cathode material of lithium-ion batteries. The formation, structure and morphology of the as prepared powder were characterized by Thermogravimetric and differential thermal analyses (TGA/DTA), X-ray diffraction (XRD), Fourier transform infrared (FTIR) and Scanning electron microscopy (SEM). The particle size of the obtained alpha-LiFeO2 ranged from 100 to 300 nm. It exhibited an initial discharge capacity 169 mAh g(-1) at 0.1 C between 1.5 and 4.3 V, especially excellent cycling retention from the 10th to the 50th cycle (96.8%) between 1.5 and 4.3 V. The higher crystallinity degree might be responsible for the cyclability improvement. (C) 2016 Elsevier B.V. All rights reserved.
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