The migration mechanism of transition metal ions in LiNi0.5Mn1.5O4

Gui-Liang Xu; Yan Qin; Yang Ren; Lu Cai; Ke An; Khalil Amine; Zonghai Chen

doi:10.1039/c5ta02522b

The migration mechanism of transition metal ions in LiNi_0.5Mn_1.5O₄

Gui-Liang Xu
, Yan Qin
, Yang Ren
, Lu Cai
, Ke An
, Khalil Amine
, Zonghai Chen^*

^*Corresponding author for this work

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

22 Citations (Scopus)

Abstract

The migration of transition metal ions in the oxygen framework was recently proposed to be responsible for the continuous loss of average working potential of high energy density layered-layered composite cathodes for lithium-ion batteries. The potential migration pathway in a model material, LiNi_0.5Mn_1.5O₄ spinel, was investigated using in situ high-energy X-ray diffraction and in situ neutron diffraction during the solid state synthesis process. It was found that the migration of transition metal ions among octahedral sites is possible by using tetrahedral vacancies as intermediate sites. It was also suggested that the number of electrons in 3d orbitals has a significant impact on their mobility in the hosting oxygen framework.

Original language	English
Pages (from-to)	13031-13038
Journal	Journal of Materials Chemistry A
Volume	3
Issue number	24
DOIs	https://doi.org/10.1039/c5ta02522b
Publication status	Published - 28 Jun 2015
Externally published	Yes

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Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

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SDG 7 Affordable and Clean Energy

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Cite this

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title = "The migration mechanism of transition metal ions in LiNi0.5Mn1.5O4",

abstract = "The migration of transition metal ions in the oxygen framework was recently proposed to be responsible for the continuous loss of average working potential of high energy density layered-layered composite cathodes for lithium-ion batteries. The potential migration pathway in a model material, LiNi0.5Mn1.5O4 spinel, was investigated using in situ high-energy X-ray diffraction and in situ neutron diffraction during the solid state synthesis process. It was found that the migration of transition metal ions among octahedral sites is possible by using tetrahedral vacancies as intermediate sites. It was also suggested that the number of electrons in 3d orbitals has a significant impact on their mobility in the hosting oxygen framework.",

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T1 - The migration mechanism of transition metal ions in LiNi0.5Mn1.5O4

AU - Xu, Gui-Liang

AU - Qin, Yan

AU - Ren, Yang

AU - Cai, Lu

AU - An, Ke

AU - Amine, Khalil

AU - Chen, Zonghai

N1 - Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

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Y1 - 2015/6/28

N2 - The migration of transition metal ions in the oxygen framework was recently proposed to be responsible for the continuous loss of average working potential of high energy density layered-layered composite cathodes for lithium-ion batteries. The potential migration pathway in a model material, LiNi0.5Mn1.5O4 spinel, was investigated using in situ high-energy X-ray diffraction and in situ neutron diffraction during the solid state synthesis process. It was found that the migration of transition metal ions among octahedral sites is possible by using tetrahedral vacancies as intermediate sites. It was also suggested that the number of electrons in 3d orbitals has a significant impact on their mobility in the hosting oxygen framework.

AB - The migration of transition metal ions in the oxygen framework was recently proposed to be responsible for the continuous loss of average working potential of high energy density layered-layered composite cathodes for lithium-ion batteries. The potential migration pathway in a model material, LiNi0.5Mn1.5O4 spinel, was investigated using in situ high-energy X-ray diffraction and in situ neutron diffraction during the solid state synthesis process. It was found that the migration of transition metal ions among octahedral sites is possible by using tetrahedral vacancies as intermediate sites. It was also suggested that the number of electrons in 3d orbitals has a significant impact on their mobility in the hosting oxygen framework.

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DO - 10.1039/c5ta02522b

M3 - RGC 21 - Publication in refereed journal

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JO - Journal of Materials Chemistry A

JF - Journal of Materials Chemistry A

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