Anisotropic lithium ion migration in LiFePO 4

S. B. Park, C. K. Park, J. T. Hwang, W. I. Cho, H. Jang

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

An anisotropic behavior of lithium ion migration in LiFePO 4 is investigated using the cathode particles after chemical delithiation. A phase contrast of a LiFePO 4 particle validating the directional property is also found. It suggests that the lithium ion migration path is limited to the [010] direction and the phase boundary between LiFePO 4 and FePO 4 is perpendicular [010]. The symmetric phase boundary inside the LiFePO 4 particle is contrary to the non-directional core-shell model reported by others. The molecular dynamics simulation confirms the crystallographic direction with the lowest energy for lithium ion migration.

Original languageEnglish
Pages (from-to)1017-1020
Number of pages4
JournalMetals and Materials International
Volume17
Issue number6
DOIs
Publication statusPublished - 2011 Dec

Keywords

  • Anisotropy
  • Electron diffraction
  • Electron microscopy
  • Ion migration
  • LiFePO

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Metals and Alloys
  • Materials Chemistry

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