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Investigation of the Li solubility in the intermediate phase Li17Sn4 relevant to understanding lithiation mechanisms in Sn-based anode materials.

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Title: Investigation of the Li solubility in the intermediate phase Li17Sn4 relevant to understanding lithiation mechanisms in Sn-based anode materials.
Authors: Reichmann, Thomas L.1 Thomas.Reichmann@kit.edu, Gebert, C.1, Cupid, Damian M.1
Source: Journal of Alloys & Compounds. Aug2017, Vol. 714, p593-602. 10p.
Subjects: Lithium compounds, Solubility, Intermediates (Chemistry), Phase transitions, Lithiation, Anodes
Abstract: A comprehensive study of the Li-rich phase boundary of the intermediate Li 17 Sn 4 compound is given based on thermochemical and electrochemical investigations. From the results a partial phase diagram showing the homogeneity range of this phase could be constructed. Using these results, the defect mechanism for the compound Li 17 Sn 4 could also be clarified. Galvanostatic coulometry with potential limitation (GCPL) was performed using 2032 coin cell equipment. This allowed for the determination of the amount of Li insertion on special crystallographic sites at 25 °C, which is 0.41 ± 0.04 at.%. The respective Li loss mechanisms (solid electrolyte interface formation, Li plating, Li trapping) are discussed. Irreversible capacity according to Li trapping could be excluded due to the limited voltage window of the experiments. Moreover, differential scanning calorimetry (DSC) was carried out on two individual Tian-Calvet type calorimeters. The Li-rich boundary of the Li 17 Sn 4 compound was determined at 81.31 ± 0.04 (C-80) and 81.28 ± 0.05 at.% Li (M-HTC) at 427 °C. In addition, the latter results were compared to the change of lattice parameters of alloys with compositions Li 17+x Sn 4 . [ABSTRACT FROM AUTHOR]
Copyright of Journal of Alloys & Compounds 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.)
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DbLabel: Engineering Source
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  Label: Title
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  Data: Investigation of the Li solubility in the intermediate phase Li17Sn4 relevant to understanding lithiation mechanisms in Sn-based anode materials.
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  Data: <searchLink fieldCode="AR" term="%22Reichmann%2C+Thomas+L%2E%22">Reichmann, Thomas L.</searchLink><relatesTo>1</relatesTo><i> Thomas.Reichmann@kit.edu</i><br /><searchLink fieldCode="AR" term="%22Gebert%2C+C%2E%22">Gebert, C.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Cupid%2C+Damian+M%2E%22">Cupid, Damian M.</searchLink><relatesTo>1</relatesTo>
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Alloys+%26+Compounds%22">Journal of Alloys & Compounds</searchLink>. Aug2017, Vol. 714, p593-602. 10p.
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  Data: <searchLink fieldCode="DE" term="%22Lithium+compounds%22">Lithium compounds</searchLink><br /><searchLink fieldCode="DE" term="%22Solubility%22">Solubility</searchLink><br /><searchLink fieldCode="DE" term="%22Intermediates+%28Chemistry%29%22">Intermediates (Chemistry)</searchLink><br /><searchLink fieldCode="DE" term="%22Phase+transitions%22">Phase transitions</searchLink><br /><searchLink fieldCode="DE" term="%22Lithiation%22">Lithiation</searchLink><br /><searchLink fieldCode="DE" term="%22Anodes%22">Anodes</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: A comprehensive study of the Li-rich phase boundary of the intermediate Li 17 Sn 4 compound is given based on thermochemical and electrochemical investigations. From the results a partial phase diagram showing the homogeneity range of this phase could be constructed. Using these results, the defect mechanism for the compound Li 17 Sn 4 could also be clarified. Galvanostatic coulometry with potential limitation (GCPL) was performed using 2032 coin cell equipment. This allowed for the determination of the amount of Li insertion on special crystallographic sites at 25 °C, which is 0.41 ± 0.04 at.%. The respective Li loss mechanisms (solid electrolyte interface formation, Li plating, Li trapping) are discussed. Irreversible capacity according to Li trapping could be excluded due to the limited voltage window of the experiments. Moreover, differential scanning calorimetry (DSC) was carried out on two individual Tian-Calvet type calorimeters. The Li-rich boundary of the Li 17 Sn 4 compound was determined at 81.31 ± 0.04 (C-80) and 81.28 ± 0.05 at.% Li (M-HTC) at 427 °C. In addition, the latter results were compared to the change of lattice parameters of alloys with compositions Li 17+x Sn 4 . [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Journal of Alloys & Compounds 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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RecordInfo BibRecord:
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      – Type: doi
        Value: 10.1016/j.jallcom.2017.04.232
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      – Code: eng
        Text: English
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        PageCount: 10
        StartPage: 593
    Subjects:
      – SubjectFull: Lithium compounds
        Type: general
      – SubjectFull: Solubility
        Type: general
      – SubjectFull: Intermediates (Chemistry)
        Type: general
      – SubjectFull: Phase transitions
        Type: general
      – SubjectFull: Lithiation
        Type: general
      – SubjectFull: Anodes
        Type: general
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      – TitleFull: Investigation of the Li solubility in the intermediate phase Li17Sn4 relevant to understanding lithiation mechanisms in Sn-based anode materials.
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            NameFull: Reichmann, Thomas L.
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            NameFull: Gebert, C.
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            NameFull: Cupid, Damian M.
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            – D: 15
              M: 08
              Text: Aug2017
              Type: published
              Y: 2017
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              Value: 714
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            – TitleFull: Journal of Alloys & Compounds
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