Anisotropic lithium ion migration in LiFePO 4

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

doi:10.1007/s12540-011-6021-9

Anisotropic lithium ion migration in LiFePO ₄

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

Department of Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

9 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 language	English
Pages (from-to)	1017-1020
Number of pages	4
Journal	Metals and Materials International
Volume	17
Issue number	6
DOIs	https://doi.org/10.1007/s12540-011-6021-9
Publication status	Published - 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

Access to Document

10.1007/s12540-011-6021-9

Cite this

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title = "Anisotropic lithium ion migration in LiFePO 4 ",

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.",

keywords = "Anisotropy, Electron diffraction, Electron microscopy, Ion migration, LiFePO",

author = "Park, {S. B.} and Park, {C. K.} and Hwang, {J. T.} and Cho, {W. I.} and H. Jang",

note = "Funding Information: This work was financially supported by a grant from the Korean Ministry of Knowledge Economy (Research grant code #: 2008EEL11P0800002009).",

year = "2011",

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doi = "10.1007/s12540-011-6021-9",

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volume = "17",

pages = "1017--1020",

journal = "Metals and Materials International",

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T1 - Anisotropic lithium ion migration in LiFePO 4

AU - Park, S. B.

AU - Park, C. K.

AU - Hwang, J. T.

AU - Cho, W. I.

AU - Jang, H.

N1 - Funding Information: This work was financially supported by a grant from the Korean Ministry of Knowledge Economy (Research grant code #: 2008EEL11P0800002009).

PY - 2011/12

Y1 - 2011/12

N2 - 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.

AB - 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.

KW - Anisotropy

KW - Electron diffraction

KW - Electron microscopy

KW - Ion migration

KW - LiFePO

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