Random Walk Analysis of the Effect of Mechanical Degradation on All-Solid-State Battery Power
Mechanical and electrochemical phenomena are coupled in defining the battery reliability, particularly for solid-state batteries. Micro-cracks act as barriers to Li-ion diffusion in the electrolyte, increasing the average electrode’s tortuosity. In our previous work, we showed that solid electrolyte...
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| Format: | Article |
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The Electrochemical Society
2018
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| Online Access: | http://hdl.handle.net/1721.1/118867 https://orcid.org/0000-0002-5248-8621 https://orcid.org/0000-0002-0833-7674 https://orcid.org/0000-0001-7564-7173 |
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| author | Bucci, Giovanna Swamy, Tushar Chiang, Yet-Ming Carter, W Craig |
| author2 | Massachusetts Institute of Technology. Institute for Soldier Nanotechnologies |
| author_facet | Massachusetts Institute of Technology. Institute for Soldier Nanotechnologies Bucci, Giovanna Swamy, Tushar Chiang, Yet-Ming Carter, W Craig |
| author_sort | Bucci, Giovanna |
| collection | MIT |
| description | Mechanical and electrochemical phenomena are coupled in defining the battery reliability, particularly for solid-state batteries. Micro-cracks act as barriers to Li-ion diffusion in the electrolyte, increasing the average electrode’s tortuosity. In our previous work, we showed that solid electrolytes are likely to suffer from mechanical degradation if their fracture energy is lower than 4 J m−2[G. Bucci, T. Swamy, Y.-M. Chiang, and W. C. Carter, J. Mater. Chem. A (2017)]. Here we study the effect of electrolyte micro-cracking on the effective conductivity of composite electrodes. Via random analyzes, we predict the average diffusivity of lithium in a solid-state electrode to decrease linearly with the extension of mechanical degradation. Furthermore, the statistical distribution of first passage times indicates that the microstructure becomes more and more heterogeneous as damage progresses. In addition to power and capacity loss, a non-uniform increase of the electrode tortuosity can lead to heterogeneous lithiation and further stress localization. The understanding of these phenomena at the mesoscale is essential to the implementation of safe high-energy solid-state batteries. |
| first_indexed | 2024-09-23T13:28:14Z |
| format | Article |
| id | mit-1721.1/118867 |
| institution | Massachusetts Institute of Technology |
| last_indexed | 2024-09-23T13:28:14Z |
| publishDate | 2018 |
| publisher | The Electrochemical Society |
| record_format | dspace |
| spelling | mit-1721.1/1188672022-09-28T14:31:05Z Random Walk Analysis of the Effect of Mechanical Degradation on All-Solid-State Battery Power Bucci, Giovanna Swamy, Tushar Chiang, Yet-Ming Carter, W Craig Massachusetts Institute of Technology. Institute for Soldier Nanotechnologies Massachusetts Institute of Technology. Department of Aeronautics and Astronautics Massachusetts Institute of Technology. Department of Materials Science and Engineering Massachusetts Institute of Technology. Department of Mechanical Engineering Bucci, Giovanna Swamy, Tushar Chiang, Yet-Ming Carter, W Craig Mechanical and electrochemical phenomena are coupled in defining the battery reliability, particularly for solid-state batteries. Micro-cracks act as barriers to Li-ion diffusion in the electrolyte, increasing the average electrode’s tortuosity. In our previous work, we showed that solid electrolytes are likely to suffer from mechanical degradation if their fracture energy is lower than 4 J m−2[G. Bucci, T. Swamy, Y.-M. Chiang, and W. C. Carter, J. Mater. Chem. A (2017)]. Here we study the effect of electrolyte micro-cracking on the effective conductivity of composite electrodes. Via random analyzes, we predict the average diffusivity of lithium in a solid-state electrode to decrease linearly with the extension of mechanical degradation. Furthermore, the statistical distribution of first passage times indicates that the microstructure becomes more and more heterogeneous as damage progresses. In addition to power and capacity loss, a non-uniform increase of the electrode tortuosity can lead to heterogeneous lithiation and further stress localization. The understanding of these phenomena at the mesoscale is essential to the implementation of safe high-energy solid-state batteries. United States. Department of Energy. Office of Science (grant DE-SC0002633) 2018-11-05T13:25:48Z 2018-11-05T13:25:48Z 2017-09 2017-08 2018-10-17T13:56:16Z Article http://purl.org/eprint/type/JournalArticle 0013-4651 1945-7111 http://hdl.handle.net/1721.1/118867 Bucci, Giovanna, Tushar Swamy, Yet-Ming Chiang, and W. Craig Carter. “Random Walk Analysis of the Effect of Mechanical Degradation on All-Solid-State Battery Power.” Journal of The Electrochemical Society 164, no. 12 (2017): A2660–A2664. https://orcid.org/0000-0002-5248-8621 https://orcid.org/0000-0002-0833-7674 https://orcid.org/0000-0001-7564-7173 http://dx.doi.org/10.1149/2.1581712JES Journal of The Electrochemical Society Creative Commons Attribution 4.0 International License http://creativecommons.org/licenses/by/4.0/ application/pdf The Electrochemical Society ECS |
| spellingShingle | Bucci, Giovanna Swamy, Tushar Chiang, Yet-Ming Carter, W Craig Random Walk Analysis of the Effect of Mechanical Degradation on All-Solid-State Battery Power |
| title | Random Walk Analysis of the Effect of Mechanical Degradation on All-Solid-State Battery Power |
| title_full | Random Walk Analysis of the Effect of Mechanical Degradation on All-Solid-State Battery Power |
| title_fullStr | Random Walk Analysis of the Effect of Mechanical Degradation on All-Solid-State Battery Power |
| title_full_unstemmed | Random Walk Analysis of the Effect of Mechanical Degradation on All-Solid-State Battery Power |
| title_short | Random Walk Analysis of the Effect of Mechanical Degradation on All-Solid-State Battery Power |
| title_sort | random walk analysis of the effect of mechanical degradation on all solid state battery power |
| url | http://hdl.handle.net/1721.1/118867 https://orcid.org/0000-0002-5248-8621 https://orcid.org/0000-0002-0833-7674 https://orcid.org/0000-0001-7564-7173 |
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