Continuous solid-phase synthesis of nanostructured lithium iron phosphate powders in air

B. M. Kerbel, L. M. Katsnelson, Yu V. Falkovich

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

In this study, a cathode material based on LiFePO4/C is synthesised directly via continuous solid-phase synthesis in air without the need for an inert or reducing medium. A nanostructured dispersive crystal composite is formed during the direct synthesis of LiFePO4/C, and its role in determining the specific discharge capacity of the synthesised powder is considered. The nanostructured composites are formed by bottom-up self-assembly, resulting in dispersive, crystalline globular solids with well-developed internal porosity. The conditions created during the continuous synthesis of LiFePO4/C in air have a dominant influence on the morphologies of the nanostructured composites, which adopt ‘isometric’ or ‘platelet’ forms. In the latter case, three- and six-faced channels may develop within their volume. Increasing the concentration of these nanostructured composites within LiFePO4/C powders helps prevent degradation in the specific charge capacity and enhances their absolute values while cycling.

Original languageEnglish
Pages (from-to)8397-8402
Number of pages6
JournalCeramics International
Volume44
Issue number7
DOIs
Publication statusPublished - 1 May 2018

Keywords

  • Continuous solid-phase synthesis
  • Dispersive crystal nanocomposites
  • LiFePO/C
  • Nanostructured powders

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Process Chemistry and Technology
  • Surfaces, Coatings and Films
  • Materials Chemistry

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