LiFePO4/C/Ag Cathode Materials Prepared by the Pechini Method

— Carbon-coated composites based on LiFePO 4 with the olivine structure have been prepared by the Pechini method. The materials have been characterized by X-ray diffraction, scanning electron microscopy, thermogravimetric analysis, and Raman spectroscopy. Optimizing the LiFePO 4 precursor heat treat...

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Bibliographic Details
Published in:Inorganic materials 2022-08, Vol.58 (8), p.822-830
Main Authors: Novikova, S. A., Il’in, A. B., Gryzlov, D. Yu, Kulova, T. L., Yaroslavtsev, A. B.
Format: Article
Language:English
Subjects:
Cathodes
Chemistry
Chemistry and Materials Science
Electrochemical analysis
Electrode materials
Heat treatment
Industrial Chemistry/Chemical Engineering
Inorganic Chemistry
Materials Science
Olivine
Raman spectroscopy
Silver
Thermogravimetric analysis
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Summary:— Carbon-coated composites based on LiFePO 4 with the olivine structure have been prepared by the Pechini method. The materials have been characterized by X-ray diffraction, scanning electron microscopy, thermogravimetric analysis, and Raman spectroscopy. Optimizing the LiFePO 4 precursor heat treatment conditions, we have obtained LiFePO 4 with the olivine structure and a primary particle size of ~30 nm. On the addition of 0.2 wt % silver to the composite, a cathode material with improved electrochemical performance has been obtained. The discharge capacity of the resultant material at cycling current densities of 20 (C/8), 1600 (10C), and 3200 mA/g (20 C) is 166, 85, and 53 mAh/g, respectively.
ISSN:0020-1685
1608-3172
DOI:10.1134/S0020168522070111