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Simulation of Fabrication and Degradation of All-Solid-State Batteries with Ductile Particles.

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Title: Simulation of Fabrication and Degradation of All-Solid-State Batteries with Ductile Particles.
Authors: Magnus So1, Gen Inoue1 ginoue@chem-eng.kyushu-u.ac.jp, Ryusei Hirate1, Keita Nunoshita1, Shota Ishikawa1, Yoshifumi Tsuge1
Source: Journal of The Electrochemical Society. Mar2021, Vol. 168 Issue 3, p1-10. 10p.
Subjects: Discrete element method, Solid electrolytes, Material plasticity, Fracture mechanics, Janus particles
Abstract: We simulated cold press fabrication and intercalation damage in a sulfide All-Solid-State Battery (ASSB) electrode using the Discrete Element Method. We developed a new cohesive hybrid-particulate model that both can simulate particle consolidation during fabrication and material failure during intercalation expansion. In this way, the effect of the fabrication conditions on the mechanical degradation of the electrode can be simulated. The high pressure in the cold press fabrication cause plastic deformation and build-up of cohesive contacts between the particles, consisting of Si active material (AM) and sulfide solid electrolyte (SE), resulting in densification of the electrode. During charging, when AM expands during lithiation, the AM-SE contact area increases but the effective SE conductivity decreases. When the expansion is small, the contact area and conductivity may recover to their original value. However, large expansion may cause plastic deformation and cracking that cause permanent reduction of both contact area and SE conductivity. This type of mechanical degradation was significantly less for electrodes fabricated at higher pressures. This model can become a valuable tool to improve the durability and performance of future ASSBs. [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: 150654355
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PubTypeId: academicJournal
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  Data: Simulation of Fabrication and Degradation of All-Solid-State Batteries with Ductile Particles.
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+The+Electrochemical+Society%22">Journal of The Electrochemical Society</searchLink>. Mar2021, Vol. 168 Issue 3, p1-10. 10p.
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  Data: <searchLink fieldCode="DE" term="%22Discrete+element+method%22">Discrete element method</searchLink><br /><searchLink fieldCode="DE" term="%22Solid+electrolytes%22">Solid electrolytes</searchLink><br /><searchLink fieldCode="DE" term="%22Material+plasticity%22">Material plasticity</searchLink><br /><searchLink fieldCode="DE" term="%22Fracture+mechanics%22">Fracture mechanics</searchLink><br /><searchLink fieldCode="DE" term="%22Janus+particles%22">Janus particles</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: We simulated cold press fabrication and intercalation damage in a sulfide All-Solid-State Battery (ASSB) electrode using the Discrete Element Method. We developed a new cohesive hybrid-particulate model that both can simulate particle consolidation during fabrication and material failure during intercalation expansion. In this way, the effect of the fabrication conditions on the mechanical degradation of the electrode can be simulated. The high pressure in the cold press fabrication cause plastic deformation and build-up of cohesive contacts between the particles, consisting of Si active material (AM) and sulfide solid electrolyte (SE), resulting in densification of the electrode. During charging, when AM expands during lithiation, the AM-SE contact area increases but the effective SE conductivity decreases. When the expansion is small, the contact area and conductivity may recover to their original value. However, large expansion may cause plastic deformation and cracking that cause permanent reduction of both contact area and SE conductivity. This type of mechanical degradation was significantly less for electrodes fabricated at higher pressures. This model can become a valuable tool to improve the durability and performance of future ASSBs. [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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    Identifiers:
      – Type: doi
        Value: 10.1149/1945-7111/abed23
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      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 10
        StartPage: 1
    Subjects:
      – SubjectFull: Discrete element method
        Type: general
      – SubjectFull: Solid electrolytes
        Type: general
      – SubjectFull: Material plasticity
        Type: general
      – SubjectFull: Fracture mechanics
        Type: general
      – SubjectFull: Janus particles
        Type: general
    Titles:
      – TitleFull: Simulation of Fabrication and Degradation of All-Solid-State Batteries with Ductile Particles.
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            NameFull: Magnus So
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            NameFull: Gen Inoue
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            NameFull: Ryusei Hirate
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            NameFull: Keita Nunoshita
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            NameFull: Shota Ishikawa
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            NameFull: Yoshifumi Tsuge
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            – D: 01
              M: 03
              Text: Mar2021
              Type: published
              Y: 2021
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