Swamy, Tushar ; Park, Richard ; Sheldon, Brian W. ; Rettenwander, Daniel ; Porz, Lukas ; Berendts, Stefan ; Uecker, Reinhard ; Carter, W. Craig ; Chiang, Yet-Ming (2018)
Lithium Metal Penetration Induced by Electrodeposition through Solid Electrolytes: Example in Single-Crystal Li₆La₃ZrTaO₁₂ Garnet.
In: Journal of The Electrochemical Society, 165 (16)
doi: 10.1149/2.1391814jes
Article, Bibliographie
This is the latest version of this item.
Abstract
Solid electrolytes potentially enable rechargeable batteries with lithium metal anodes possessing higher energy densities than today's lithium ion batteries. To do so the solid electrolyte must suppress instabilities that lead to poor coulombic efficiency and short circuits. In this work, lithium electrodeposition was performed on single-crystal Li₆La₃ZrTaO₁₂ garnets to investigate factors governing lithium penetration through brittle electrolytes. In single crystals, grain boundaries are excluded as paths for lithium metal propagation. Vickers microindentation was used to introduce surface flaws of known size. However, operando optical microscopy revealed that lithium metal penetration propagates preferentially from a different, second class of flaws. At the perimeter of surface current collectors smaller in size than the lithium source electrode, an enhanced electrodeposition current density causes lithium filled cracks to initiate and grow to penetration, even when large Vickers defects are in proximity. Modeling the electric field distribution in the experimental cell revealed that a 5-fold enhancement in field occurs within 10 micrometers of the electrode edge and generates high local electrochemomechanical stress. This may determine the initiation sites for lithium propagation, overriding the presence of larger defects elsewhere.
| Item Type: | Article |
|---|---|
| Erschienen: | 2018 |
| Creators: | Swamy, Tushar ; Park, Richard ; Sheldon, Brian W. ; Rettenwander, Daniel ; Porz, Lukas ; Berendts, Stefan ; Uecker, Reinhard ; Carter, W. Craig ; Chiang, Yet-Ming |
| Type of entry: | Bibliographie |
| Title: | Lithium Metal Penetration Induced by Electrodeposition through Solid Electrolytes: Example in Single-Crystal Li₆La₃ZrTaO₁₂ Garnet |
| Language: | English |
| Date: | 2018 |
| Place of Publication: | Darmstadt |
| Publisher: | IOP Publishing |
| Journal or Publication Title: | Journal of The Electrochemical Society |
| Volume of the journal: | 165 |
| Issue Number: | 16 |
| DOI: | 10.1149/2.1391814jes |
| Corresponding Links: | |
| Abstract: | Solid electrolytes potentially enable rechargeable batteries with lithium metal anodes possessing higher energy densities than today's lithium ion batteries. To do so the solid electrolyte must suppress instabilities that lead to poor coulombic efficiency and short circuits. In this work, lithium electrodeposition was performed on single-crystal Li₆La₃ZrTaO₁₂ garnets to investigate factors governing lithium penetration through brittle electrolytes. In single crystals, grain boundaries are excluded as paths for lithium metal propagation. Vickers microindentation was used to introduce surface flaws of known size. However, operando optical microscopy revealed that lithium metal penetration propagates preferentially from a different, second class of flaws. At the perimeter of surface current collectors smaller in size than the lithium source electrode, an enhanced electrodeposition current density causes lithium filled cracks to initiate and grow to penetration, even when large Vickers defects are in proximity. Modeling the electric field distribution in the experimental cell revealed that a 5-fold enhancement in field occurs within 10 micrometers of the electrode edge and generates high local electrochemomechanical stress. This may determine the initiation sites for lithium propagation, overriding the presence of larger defects elsewhere. |
| Classification DDC: | 500 Science and mathematics > 530 Physics 500 Science and mathematics > 540 Chemistry |
| Divisions: | 11 Department of Materials and Earth Sciences 11 Department of Materials and Earth Sciences > Material Science 11 Department of Materials and Earth Sciences > Material Science > Nonmetallic-Inorganic Materials |
| Date Deposited: | 02 Aug 2024 12:49 |
| Last Modified: | 02 Aug 2024 12:49 |
| PPN: | |
| Export: | |
| Suche nach Titel in: | TUfind oder in Google |
Available Versions of this Item
-
Lithium Metal Penetration Induced by Electrodeposition through Solid Electrolytes: Example in Single-Crystal Li₆La₃ZrTaO₁₂ Garnet. (deposited 21 Feb 2023 10:43)
- Lithium Metal Penetration Induced by Electrodeposition through Solid Electrolytes: Example in Single-Crystal Li₆La₃ZrTaO₁₂ Garnet. (deposited 02 Aug 2024 12:49) [Currently Displayed]
 |
Send an inquiry |
Options (only for editors)
 |
Show editorial Details |
Drucken
Impressum