New Approaches to Synthesizing Nanostructured Electrode Materials Based on Double Lithium and Cobalt Phosphates in Salt Melts

N. V. Zharov; Жаров Н. В.; M. V. Maslova; Маслова М. В.; V. I. Ivanenko; Иваненко В. И.; R. I. Korneikov; Корнейков Р. И.

doi:10.31857/S0044453723110365

New Approaches to Synthesizing Nanostructured Electrode Materials Based on Double Lithium and Cobalt Phosphates in Salt Melts

Authors: Zharov N.V.¹, Maslova M.V.¹, Ivanenko V.I.², Korneikov R.I.³
Affiliations:
1. I.V. Tananaev Institute of Chemistry and Technology of Rare Elements and Mineral Raw Materials of the Russian Academy of Sciences Kola Science Center
2. Tananaev Institute of Chemistry and Technology of Rare Elements and Mineral Raw Materials, Kola Scientific Center, Russian Academy of Sciences
3. Tananaev Institute of Chemistry and Technology of Rare Elements and Mineral Raw Materials (separate subdivision), Kola Scientific Center (Federal Research Center), Russian Academy of Sciences, 184209, Akademgorodok, Apatity, Murmansk oblast, Russia
Issue: Vol 97, No 11 (2023)
Pages: 1647-1654
Section: ФИЗИЧЕСКАЯ ХИМИЯ НАНОКЛАСТЕРОВ, СУПРАМОЛЕКУЛЯРНЫХ СТРУКТУР И НАНОМАТЕРИАЛОВ
Submitted: 26.12.2023
Published: 01.11.2023
URL: https://journals.rcsi.science/0044-4537/article/view/233073
DOI: https://doi.org/10.31857/S0044453723110365
EDN: https://elibrary.ru/EJUDWZ
ID: 233073

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Abstract
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Abstract

A new and highly efficient way of obtaining finely dispersed LiCoPO4 powder is developed with a given morphology from ammonium substituted precursor NH4CoPO4⋅H2O in a lithium nitrate melt. It is shown that the morphology of the obtained product is determined by the morphology of the used precursor and depends on the physicochemical conditions of its preparation. The obtained LiCoPO4 and its precursors are characterized by means of XRD, SEM, and BET. Electrochemical tests show the resulting powder is electrochemically active. Cathode material based on the obtained LiCoPO4 shows a high specific discharge capacity of 110 mA h/g at a current density corresponding to a charge/discharge rate of 1C, due to the high dispersion and lamellar morphology of the particles of the synthesized powder. The proposed procedure is characterized by the speed of obtaining the target product. It does not require the use of expensive equipment or additional stages of high-temperature crystallization and grinding, and can be scaled up to industrial use.

Keywords

cathode materials, double phosphates, synthesis, electrochemical properties

References

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