Synthesis of spherical LiMnPO4/C composite microparticles

Zhumabay Bakenov, Izumi Taniguchi

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)

Abstract

Spherical LiMnPO4/C composite microparticles were prepared by a combination of spray pyrolysis and spray drying followed by heat treatment and examined as a cathode material for lithium batteries. The structure, morphology and electrochemical performance of the resulting spherical LiMnPO4/C microparticles were characterized by X-ray diffraction, field-emission scanning electron microscopy, transmission electronic microscopy and standard electrochemical techniques. The final sample was identified as a single phase orthorhombic structure of LiMnPO4 and spherical powders with a geometric mean diameter of 3.65 μm and a geometric standard deviation of 1.34. The electrochemical cells contained the spherical LiMnPO4/C microparticles exhibited first discharge capacities of 112 and 130 mAh g -1 at 0.05 C at room temperature and 55 °C, respectively. These also showed a good rate capability up to 5 C at room temperature and 55 °C.

Original languageEnglish
Pages (from-to)1311-1314
Number of pages4
JournalMaterials Research Bulletin
Volume46
Issue number8
DOIs
Publication statusPublished - Aug 1 2011

Keywords

  • A. Composite
  • B. Chemical synthesis
  • C. X-ray diffraction
  • D. Electrochemical properties
  • D. Energy storage

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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