Direct observation of lithium staging in partially delithiated LiFePO 4 at atomic resolution

Lin Gu; Changbao Zhu; Hong Li; Yan Yu; Chilin Li; Susumu Tsukimoto; Joachim Maier; Yuichi Ikuhara

doi:10.1021/ja109412x

Direct observation of lithium staging in partially delithiated LiFePO ₄ at atomic resolution

Lin Gu, Changbao Zhu, Hong Li, Yan Yu, Chilin Li, Susumu Tsukimoto, Joachim Maier, Yuichi Ikuhara

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

209 Citations (Scopus)

Abstract

Lithium ions in LiFePO₄ were observed directly at atomic resolution by an aberration-corrected annular-bright-field scanning transmission electron microscopy technique. In addition, it was found in partially delithiated LiFePO₄ that the remaining lithium ions preferably occupy every second layer, along the b axis, analogously to the staging phenomenon observed in some layered intercalation compounds. This new finding challenges previously proposed LiFePO₄/FePO₄ two-phase separation mechanisms.

Original language	English
Pages (from-to)	4661-4663
Number of pages	3
Journal	Journal of the American Chemical Society
Volume	133
Issue number	13
DOIs	https://doi.org/10.1021/ja109412x
Publication status	Published - 2011 Apr 6

ASJC Scopus subject areas

Catalysis
Chemistry(all)
Biochemistry
Colloid and Surface Chemistry

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10.1021/ja109412x

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abstract = "Lithium ions in LiFePO4 were observed directly at atomic resolution by an aberration-corrected annular-bright-field scanning transmission electron microscopy technique. In addition, it was found in partially delithiated LiFePO4 that the remaining lithium ions preferably occupy every second layer, along the b axis, analogously to the staging phenomenon observed in some layered intercalation compounds. This new finding challenges previously proposed LiFePO4/FePO4 two-phase separation mechanisms.",

author = "Lin Gu and Changbao Zhu and Hong Li and Yan Yu and Chilin Li and Susumu Tsukimoto and Joachim Maier and Yuichi Ikuhara",

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AU - Gu, Lin

AU - Zhu, Changbao

AU - Li, Hong

AU - Yu, Yan

AU - Li, Chilin

AU - Tsukimoto, Susumu

AU - Maier, Joachim

AU - Ikuhara, Yuichi

PY - 2011/4/6

Y1 - 2011/4/6

N2 - Lithium ions in LiFePO4 were observed directly at atomic resolution by an aberration-corrected annular-bright-field scanning transmission electron microscopy technique. In addition, it was found in partially delithiated LiFePO4 that the remaining lithium ions preferably occupy every second layer, along the b axis, analogously to the staging phenomenon observed in some layered intercalation compounds. This new finding challenges previously proposed LiFePO4/FePO4 two-phase separation mechanisms.

AB - Lithium ions in LiFePO4 were observed directly at atomic resolution by an aberration-corrected annular-bright-field scanning transmission electron microscopy technique. In addition, it was found in partially delithiated LiFePO4 that the remaining lithium ions preferably occupy every second layer, along the b axis, analogously to the staging phenomenon observed in some layered intercalation compounds. This new finding challenges previously proposed LiFePO4/FePO4 two-phase separation mechanisms.

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Direct observation of lithium staging in partially delithiated LiFePO ₄ at atomic resolution

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