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Raman scattering of LiNi1−yAlyO2

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Title: Raman scattering of LiNi1−yAlyO2
Authors: Julien, C.1 cjul@ccr.jussieu.fr, Massot, M.2
Source: Solid State Ionics. May2002, Vol. 148 Issue 1/2, p53. 7p.
Subjects: Lithium compounds, Raman effect
Abstract: We measured Raman spectra from LiNiO2 and LiNi1−yAlyO2 positive electrode materials for lithium-ion batteries. LiNiO2 oxide is unambiguously shown to have a layered rock-salt structure (R3¯m space group), which exhibits two Raman bands at 465 and 545 cm−1 assigned to the Eg and A1g species, respectively. Whereas LiNi1−yAlyO2 prepared at low temperature (450 °C) using the succinate sol–gel method develops a spinel structure, LiNi1−yAlyO2 prepared by the citrate route is a microcrystalline oxide indicating the α-NaFeO2 structure (R3¯m). The shift of the Raman peak positions suggest that replacement of Ni by Al increases the elementary cell volume and changes the intralayer bond covalency of LiNi1−yAlyO2, in good accordance with the X-ray diffraction (XRD) measurements. [Copyright &y& Elsevier]
Copyright of Solid State Ionics is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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Header DbId: egs
DbLabel: Engineering Source
An: 7797416
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
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  Data: Raman scattering of LiNi<subscript>1−y</subscript>Al<subscript>y</subscript>O<subscript>2</subscript>
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  Data: <searchLink fieldCode="AR" term="%22Julien%2C+C%2E%22">Julien, C.</searchLink><relatesTo>1</relatesTo><i> cjul@ccr.jussieu.fr</i><br /><searchLink fieldCode="AR" term="%22Massot%2C+M%2E%22">Massot, M.</searchLink><relatesTo>2</relatesTo>
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  Data: <searchLink fieldCode="JN" term="%22Solid+State+Ionics%22">Solid State Ionics</searchLink>. May2002, Vol. 148 Issue 1/2, p53. 7p.
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– Name: Abstract
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  Data: We measured Raman spectra from LiNiO2 and LiNi1−yAlyO2 positive electrode materials for lithium-ion batteries. LiNiO2 oxide is unambiguously shown to have a layered rock-salt structure (R3¯m space group), which exhibits two Raman bands at 465 and 545 cm−1 assigned to the Eg and A1g species, respectively. Whereas LiNi1−yAlyO2 prepared at low temperature (450 °C) using the succinate sol–gel method develops a spinel structure, LiNi1−yAlyO2 prepared by the citrate route is a microcrystalline oxide indicating the α-NaFeO2 structure (R3¯m). The shift of the Raman peak positions suggest that replacement of Ni by Al increases the elementary cell volume and changes the intralayer bond covalency of LiNi1−yAlyO2, in good accordance with the X-ray diffraction (XRD) measurements. [Copyright &y& Elsevier]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Solid State Ionics is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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      – Type: doi
        Value: 10.1016/S0167-2738(02)00117-0
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      – Code: eng
        Text: English
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    Subjects:
      – SubjectFull: Lithium compounds
        Type: general
      – SubjectFull: Raman effect
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      – TitleFull: Raman scattering of LiNi1−yAlyO2
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            NameFull: Julien, C.
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              Text: May2002
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              Y: 2002
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