Journal
BULLETIN OF MATERIALS SCIENCE
Volume 32, Issue 6, Pages 579-582Publisher
INDIAN ACAD SCIENCES
DOI: 10.1007/s12034-009-0088-7
Keywords
LiFePO4; co-doping; microwave heating; high rate discharge
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Funding
- National Natural Science Foundation of China
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Nanostructured LiFePO4 powder with a narrow particle size (ca. 100 nm) for high rate lithium-ion battery cathode application was obtained by microwave heating and using citric acid as carbon source. The microstructures and morphologies of the synthesized materials were investigated by X-ray diffraction and scanning electron microscope while the electrochemical performances were evaluated by galvanostatic charge-discharge. The carbon coating and Ti4+ could improve the conductivity both between the LiFePO4 particles and the intrinsic electronic conductivity. The LiFePO4 doped with 5% C and 1% Ti4+ resulted in a specific capacity of 114.95 mAh.g(-1) and 102.4 mAh.g(-1) at discharge rates of 0.3C and 1C, respectively, and the cycle performance is very good.
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