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Surface analytical characterization of LiNi0.8‐yMnyCo0.2O2 (0 ≤ y ≤ 0.4) compounds for lithium‐ion battery electrodes.

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Title: Surface analytical characterization of LiNi0.8‐yMnyCo0.2O2 (0 ≤ y ≤ 0.4) compounds for lithium‐ion battery electrodes.
Authors: Azmi, R.1 raheleh.azmi@kit.edu, Masoumi, M.1, Ehrenberg, H.1, Trouillet, V.1,2, Bruns, M.1,2
Source: Surface & Interface Analysis: SIA. Nov2018, Vol. 50 Issue 11, p1132-1137. 6p.
Subjects: Photoelectron spectroscopy, X-ray photoelectron spectroscopy, Oxidation states, Transition metal oxides, Atmospherics
Abstract: This study presents the quantitative chemical state elucidation of newly developed LiNi0.8‐yMnyCo0.2O2 (0 ≤ y ≤ 0.4) cathode materials for Li‐ion batteries utilizing X‐ray photoelectron spectroscopy. For reliable quantification of the chemical states of the transition metals, namely Mn, Co, and Ni, in particular, the complex peak structures consisting of significant photoelectron multiplet splitting, shake‐up satellites, and additional Auger and photoelectron peak overlaps were incorporated. The template approach that has been used enables the unambiguous elucidation of the transition metals' oxidation states; even gradual changes in the Ni2+/Ni3+ ratio depending on the Ni content in the novel LiNi0.8‐yMnyCo0.2O2 compound series can clearly be evidenced. In all cases, special care was taken with respect to air sensitivity, contamination during sample handling, and probable method‐induced sample decomposition. [ABSTRACT FROM AUTHOR]
Copyright of Surface & Interface Analysis: SIA is the property of Wiley-Blackwell 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.)
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  Data: Surface analytical characterization of LiNi<subscript>0.8‐y</subscript>Mn<subscript>y</subscript>Co<subscript>0.2</subscript>O<subscript>2</subscript> (0 ≤ y ≤ 0.4) compounds for lithium‐ion battery electrodes.
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  Data: <searchLink fieldCode="AR" term="%22Azmi%2C+R%2E%22">Azmi, R.</searchLink><relatesTo>1</relatesTo><i> raheleh.azmi@kit.edu</i><br /><searchLink fieldCode="AR" term="%22Masoumi%2C+M%2E%22">Masoumi, M.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Ehrenberg%2C+H%2E%22">Ehrenberg, H.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Trouillet%2C+V%2E%22">Trouillet, V.</searchLink><relatesTo>1,2</relatesTo><br /><searchLink fieldCode="AR" term="%22Bruns%2C+M%2E%22">Bruns, M.</searchLink><relatesTo>1,2</relatesTo>
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  Data: <searchLink fieldCode="DE" term="%22Photoelectron+spectroscopy%22">Photoelectron spectroscopy</searchLink><br /><searchLink fieldCode="DE" term="%22X-ray+photoelectron+spectroscopy%22">X-ray photoelectron spectroscopy</searchLink><br /><searchLink fieldCode="DE" term="%22Oxidation+states%22">Oxidation states</searchLink><br /><searchLink fieldCode="DE" term="%22Transition+metal+oxides%22">Transition metal oxides</searchLink><br /><searchLink fieldCode="DE" term="%22Atmospherics%22">Atmospherics</searchLink>
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  Data: This study presents the quantitative chemical state elucidation of newly developed LiNi0.8‐yMnyCo0.2O2 (0 ≤ y ≤ 0.4) cathode materials for Li‐ion batteries utilizing X‐ray photoelectron spectroscopy. For reliable quantification of the chemical states of the transition metals, namely Mn, Co, and Ni, in particular, the complex peak structures consisting of significant photoelectron multiplet splitting, shake‐up satellites, and additional Auger and photoelectron peak overlaps were incorporated. The template approach that has been used enables the unambiguous elucidation of the transition metals' oxidation states; even gradual changes in the Ni2+/Ni3+ ratio depending on the Ni content in the novel LiNi0.8‐yMnyCo0.2O2 compound series can clearly be evidenced. In all cases, special care was taken with respect to air sensitivity, contamination during sample handling, and probable method‐induced sample decomposition. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Surface & Interface Analysis: SIA is the property of Wiley-Blackwell 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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        Value: 10.1002/sia.6415
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        Text: English
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        PageCount: 6
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      – SubjectFull: Photoelectron spectroscopy
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      – SubjectFull: X-ray photoelectron spectroscopy
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      – SubjectFull: Oxidation states
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      – SubjectFull: Transition metal oxides
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      – SubjectFull: Atmospherics
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      – TitleFull: Surface analytical characterization of LiNi0.8‐yMnyCo0.2O2 (0 ≤ y ≤ 0.4) compounds for lithium‐ion battery electrodes.
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            NameFull: Azmi, R.
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            NameFull: Masoumi, M.
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              M: 11
              Text: Nov2018
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              Y: 2018
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