Effect of microstructure on the cycling behavior of li-in alloy anodes for solid-state batteries
Indium-lithium alloys operating in the two-phase region of indium metal and the InLi intermetallic are the counter and reference electrodes of choice in two-electrode solid-state batteries. At high current densities on both charge and discharge, they offer low polarization, good accessible capacity,...
| Main Authors: | , , , , , |
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| Format: | Journal article |
| Language: | English |
| Published: |
American Chemical Society
2024
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| _version_ | 1797112907405721600 |
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| author | Aspinall, J Chart, Y Guo, H Shrestha, P Burton, M Pasta, M |
| author_facet | Aspinall, J Chart, Y Guo, H Shrestha, P Burton, M Pasta, M |
| author_sort | Aspinall, J |
| collection | OXFORD |
| description | Indium-lithium alloys operating in the two-phase region of indium metal and the InLi intermetallic are the counter and reference electrodes of choice in two-electrode solid-state batteries. At high current densities on both charge and discharge, they offer low polarization, good accessible capacity, and good cycle life. By synthesizing a phase pure InLi intermetallic and measuring its diffusion and mechanical properties, it is clear that the electrochemical performance is attributable to measured fast diffusion kinetics in the InLi intermetallic, DLi298K = 5.5 × 10-7 cm2 s-1. The indium metal phase is essentially ion-blocking, so the performance is tied to the microstructure, which evolves with cycling. A simple two-layer microstructure is proposed, based on the fundamental understanding established, which maximizes performance. Despite the limitations of indium-based alloys in commercial applications, the lessons learned can be extended to other fast-conducting lithium intermetallics. |
| first_indexed | 2024-04-09T03:55:59Z |
| format | Journal article |
| id | oxford-uuid:5678d962-f2be-4932-aeec-364b7c191d42 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-04-09T03:55:59Z |
| publishDate | 2024 |
| publisher | American Chemical Society |
| record_format | dspace |
| spelling | oxford-uuid:5678d962-f2be-4932-aeec-364b7c191d422024-03-15T15:06:20ZEffect of microstructure on the cycling behavior of li-in alloy anodes for solid-state batteriesJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:5678d962-f2be-4932-aeec-364b7c191d42EnglishSymplectic ElementsAmerican Chemical Society2024Aspinall, JChart, YGuo, HShrestha, PBurton, MPasta, MIndium-lithium alloys operating in the two-phase region of indium metal and the InLi intermetallic are the counter and reference electrodes of choice in two-electrode solid-state batteries. At high current densities on both charge and discharge, they offer low polarization, good accessible capacity, and good cycle life. By synthesizing a phase pure InLi intermetallic and measuring its diffusion and mechanical properties, it is clear that the electrochemical performance is attributable to measured fast diffusion kinetics in the InLi intermetallic, DLi298K = 5.5 × 10-7 cm2 s-1. The indium metal phase is essentially ion-blocking, so the performance is tied to the microstructure, which evolves with cycling. A simple two-layer microstructure is proposed, based on the fundamental understanding established, which maximizes performance. Despite the limitations of indium-based alloys in commercial applications, the lessons learned can be extended to other fast-conducting lithium intermetallics. |
| spellingShingle | Aspinall, J Chart, Y Guo, H Shrestha, P Burton, M Pasta, M Effect of microstructure on the cycling behavior of li-in alloy anodes for solid-state batteries |
| title | Effect of microstructure on the cycling behavior of li-in alloy anodes for solid-state batteries |
| title_full | Effect of microstructure on the cycling behavior of li-in alloy anodes for solid-state batteries |
| title_fullStr | Effect of microstructure on the cycling behavior of li-in alloy anodes for solid-state batteries |
| title_full_unstemmed | Effect of microstructure on the cycling behavior of li-in alloy anodes for solid-state batteries |
| title_short | Effect of microstructure on the cycling behavior of li-in alloy anodes for solid-state batteries |
| title_sort | effect of microstructure on the cycling behavior of li in alloy anodes for solid state batteries |
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