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Numerical Study of Interaction and Aggregation of Non-Spherical Particles in Forming Li-Ion Battery Cathodes.

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Title: Numerical Study of Interaction and Aggregation of Non-Spherical Particles in Forming Li-Ion Battery Cathodes.
Authors: Min Zhu1, Jonghyun Park1, Sastry, A. M.2, Wei Lua1 weilu@umich.edu
Source: Journal of The Electrochemical Society. 2014, Vol. 161 Issue 9, pA1247-A1252. 6p.
Subjects: Battery additives, Electrodes, Monte Carlo method, Electrochemistry
Abstract: Aggregation between additive particles and active particles in battery electrode material strongly affects their interfacial phenomena and eventually battery performance. This paper proposes a three dimensional model to simulate the aggregation process of spherical carbon black (CB) and ellipsoidal LiMn2O4 active material (AM) particles within a liquid medium (PVDF polymer dissolved in NMP solvent) in the electrode materials of Li-ion batteries. Monte Carlo method is employed and the resulting aggregates are characterized by the number of CB particles connected to the percolated cluster of AM, which affects the effective conductivity. The effects of particle geometry and constituent mass ratio are investigated. It is found that a larger AM particle aspect ratio contributes positively to the percentage of CB attachment. For a given AM particle aspect ratio of 2 or 3, the average percentage of CB attachment is found to decrease as the CB:AM mass ratio increases from 2%:94% to 4%:92%. [ABSTRACT FROM AUTHOR]
Copyright of Journal of The Electrochemical Society is the property of IOP Publishing 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
An: 97451545
AccessLevel: 6
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PubTypeId: academicJournal
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  Label: Title
  Group: Ti
  Data: Numerical Study of Interaction and Aggregation of Non-Spherical Particles in Forming Li-Ion Battery Cathodes.
– Name: Author
  Label: Authors
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  Data: <searchLink fieldCode="AR" term="%22Min+Zhu%22">Min Zhu</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Jonghyun+Park%22">Jonghyun Park</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Sastry%2C+A%2E+M%2E%22">Sastry, A. M.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Wei+Lua%22">Wei Lua</searchLink><relatesTo>1</relatesTo><i> weilu@umich.edu</i>
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+The+Electrochemical+Society%22">Journal of The Electrochemical Society</searchLink>. 2014, Vol. 161 Issue 9, pA1247-A1252. 6p.
– Name: Subject
  Label: Subjects
  Group: Su
  Data: <searchLink fieldCode="DE" term="%22Battery+additives%22">Battery additives</searchLink><br /><searchLink fieldCode="DE" term="%22Electrodes%22">Electrodes</searchLink><br /><searchLink fieldCode="DE" term="%22Monte+Carlo+method%22">Monte Carlo method</searchLink><br /><searchLink fieldCode="DE" term="%22Electrochemistry%22">Electrochemistry</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Aggregation between additive particles and active particles in battery electrode material strongly affects their interfacial phenomena and eventually battery performance. This paper proposes a three dimensional model to simulate the aggregation process of spherical carbon black (CB) and ellipsoidal LiMn2O4 active material (AM) particles within a liquid medium (PVDF polymer dissolved in NMP solvent) in the electrode materials of Li-ion batteries. Monte Carlo method is employed and the resulting aggregates are characterized by the number of CB particles connected to the percolated cluster of AM, which affects the effective conductivity. The effects of particle geometry and constituent mass ratio are investigated. It is found that a larger AM particle aspect ratio contributes positively to the percentage of CB attachment. For a given AM particle aspect ratio of 2 or 3, the average percentage of CB attachment is found to decrease as the CB:AM mass ratio increases from 2%:94% to 4%:92%. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Journal of The Electrochemical Society is the property of IOP Publishing 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: 10.1149/2.0211409jes
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      – Code: eng
        Text: English
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        PageCount: 6
        StartPage: A1247
    Subjects:
      – SubjectFull: Battery additives
        Type: general
      – SubjectFull: Electrodes
        Type: general
      – SubjectFull: Monte Carlo method
        Type: general
      – SubjectFull: Electrochemistry
        Type: general
    Titles:
      – TitleFull: Numerical Study of Interaction and Aggregation of Non-Spherical Particles in Forming Li-Ion Battery Cathodes.
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            NameFull: Min Zhu
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            NameFull: Jonghyun Park
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            NameFull: Sastry, A. M.
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            NameFull: Wei Lua
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            – D: 01
              M: 09
              Text: 2014
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              Y: 2014
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            – TitleFull: Journal of The Electrochemical Society
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