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Synthesis, the structural and thermal stability of LiCo1 − xFexPO4

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Abstract

LiCoPO4 is considered the most interesting positive electrode material. Therefore, 4 different percentages of LiCo1 − xFexPO4 were synthesized by a hydrothermal route at low temperatures. The as-prepared sample has a single orthorhombic Pn21a-phase at 220 °C. As a result, the thermodynamics and combustion process were investigated at numerous rates of heating, and the kinetic parameters were calculated using thermogravimetric experiments. Pyrolysis went to the high-temperature region with an increase in intensity in heating rate, according to the TGA study of the combustions. Three stages were determined according to the TGA analysis, and each stage predicted another phase which was confirmed by XRD. The thermodynamics study of LiCo1 − xFexPO4 materials was an efficient technique to investigate the temperature impact on the pyrolysis activity, which may be beneficial in many contemporary applications. The values of Avrami exponent n(χ) calculated in terms of conversion rate dχ/dt of the first, second, and third conversion peak is 2.22 and 2.95 (for different compositions of LiCo1 − xFexPO4 (0 ≤ x ≤ 20)), respectively. The Impedance spectrum shows that the increase in the Fe content improves the electrical conductivity of LiCoPO4.

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Acknowledgements

The authors extend their appreciation to the Deanship of Scientific Research at King Khalid University for funding this work through the Large Groups Project under grant number (126/43). The authors express their gratitude to Princess Nourah bint Abdulrahman University Researchers Supporting Project (Grant No. PNURSP2023R32), Princess Nourah bint Abdulrahman University, Riyadh, Saudi Arabia.

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Authors and Affiliations

  1. Physics Department, Faculty of Science, Al-Azhar University, Assiut, 71542, Egypt

    A. M. Aboraia, H. M. H. Zakaly & E. R. Shaaban

  2. Department of Physics and Nanotechnology Research Unit, Faculty of Science, University of Tabuk, 71491, Tabuk, Saudi Arabia

    Taymour A. Hamdalla, A. A. A. Darwish, S. A. Al-Ghamdi & S. Alfadhli

  3. Department of Physics, Faculty of Science, Alexandria University, Alexandria, Egypt

    Taymour A. Hamdalla

  4. Department of Physics, Faculty of Education at Al-Mahweet, Sana’a University, Al-Mahweet, Yemen

    A. A. A. Darwish

  5. The Smart Materials Research Institute, Southern Federal University, Sladkova, Rostov-on-Don, Russia

    Alexander Soldatov

  6. Institute of Physics and Technology, Ural Federal University, Yekaterinburg, Russia

    H. M. H. Zakaly

  7. Department of Physics, College of Science, Princess Nourah Bint Abdulrahman University, P.O. Box 84428, Riyadh, Saudi Arabia

    B. M. Alotaibi

  8. Department of Radiological Science, Faculty of Applied Medical Science, King Khalid University, P. O. Box 9004, Abha, Saudi Arabia

    Mohamed Saad

  9. Department of Physics, Faculty of Science, Mansoura University, Mansoura, Egypt

    Mohamed Saad

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  1. A. M. Aboraia
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  9. E. R. Shaaban
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Correspondence to A. M. Aboraia.

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Aboraia, A.M., Hamdalla, T.A., Darwish, A.A.A. et al. Synthesis, the structural and thermal stability of LiCo1 − xFexPO4. J Therm Anal Calorim 148, 3981–3991 (2023). https://doi.org/10.1007/s10973-023-12030-6

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  • DOI: https://doi.org/10.1007/s10973-023-12030-6

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