Elastic and plastic mechanical properties of lithium measured by nanoindentation
Metallic lithium is the desired anode material for high energy density solid state batteries and shows a factor of four range in elastic modulus and two orders of magnitude difference in creep properties dependent on sample preparation and testing method. In this paper we use in-situ nanoindentation...
| Main Authors: | , , , |
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| Format: | Journal article |
| Language: | English |
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Elsevier
2023
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| _version_ | 1797111130605223936 |
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| author | Darnbrough, E Aspinall, J Pasta, M Armstrong, DEJ |
| author_facet | Darnbrough, E Aspinall, J Pasta, M Armstrong, DEJ |
| author_sort | Darnbrough, E |
| collection | OXFORD |
| description | Metallic lithium is the desired anode material for high energy density solid state batteries and shows a factor of four range in elastic modulus and two orders of magnitude difference in creep properties dependent on sample preparation and testing method. In this paper we use in-situ nanoindentation to measure the anisotropic mechanical properties from the BCC crystal structure and the effect of strain-rate and temperature, which have an impact on battery cycle performance. This work clarifies the reasons for the range of property values reported in the literature with a global equation for yield strength with strain-rate. From this information conclusions can be drawn around variables to optimise in order to minimise the required pressure for a chosen stripping critical current in solid state batteries. |
| first_indexed | 2024-03-07T08:04:25Z |
| format | Journal article |
| id | oxford-uuid:fa3ca636-44fa-4821-928d-e20a0ea75278 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T08:04:25Z |
| publishDate | 2023 |
| publisher | Elsevier |
| record_format | dspace |
| spelling | oxford-uuid:fa3ca636-44fa-4821-928d-e20a0ea752782023-10-17T08:59:09ZElastic and plastic mechanical properties of lithium measured by nanoindentationJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:fa3ca636-44fa-4821-928d-e20a0ea75278EnglishSymplectic ElementsElsevier2023Darnbrough, EAspinall, JPasta, MArmstrong, DEJMetallic lithium is the desired anode material for high energy density solid state batteries and shows a factor of four range in elastic modulus and two orders of magnitude difference in creep properties dependent on sample preparation and testing method. In this paper we use in-situ nanoindentation to measure the anisotropic mechanical properties from the BCC crystal structure and the effect of strain-rate and temperature, which have an impact on battery cycle performance. This work clarifies the reasons for the range of property values reported in the literature with a global equation for yield strength with strain-rate. From this information conclusions can be drawn around variables to optimise in order to minimise the required pressure for a chosen stripping critical current in solid state batteries. |
| spellingShingle | Darnbrough, E Aspinall, J Pasta, M Armstrong, DEJ Elastic and plastic mechanical properties of lithium measured by nanoindentation |
| title | Elastic and plastic mechanical properties of lithium measured by nanoindentation |
| title_full | Elastic and plastic mechanical properties of lithium measured by nanoindentation |
| title_fullStr | Elastic and plastic mechanical properties of lithium measured by nanoindentation |
| title_full_unstemmed | Elastic and plastic mechanical properties of lithium measured by nanoindentation |
| title_short | Elastic and plastic mechanical properties of lithium measured by nanoindentation |
| title_sort | elastic and plastic mechanical properties of lithium measured by nanoindentation |
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