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

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Inorganic Materials Aims and scope

Abstract—

Carbon-coated composites based on LiFePO4 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 LiFePO4 precursor heat treatment conditions, we have obtained LiFePO4 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.

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Funding

This work was supported by the Russian Federation Ministry of Science and Higher Education as part of the state research target for the Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences.

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Authors and Affiliations

  1. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, 119991, Moscow, Russia

    S. A. Novikova, A. B. Il’in & A. B. Yaroslavtsev

  2. Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, 119991, Moscow, Russia

    D. Yu. Gryzlov & T. L. Kulova

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  1. S. A. Novikova
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  2. A. B. Il’in
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  3. D. Yu. Gryzlov
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  4. T. L. Kulova
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Novikova, S.A., Il’in, A.B., Gryzlov, D.Y. et al. LiFePO4/C/Ag Cathode Materials Prepared by the Pechini Method. Inorg Mater 58, 822–830 (2022). https://doi.org/10.1134/S0020168522070111

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  • DOI: https://doi.org/10.1134/S0020168522070111

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