A first principles study of the mechanical properties of Li-Sn alloys
To obtain a better understanding of the failure mechanism of lithium ion batteries during charging–discharging, we have systematically studied the mechanical properties of Li–Sn alloys based on density functional theory, including elastic constants such as the orientation-averaged bulk, shear and Yo...
| Main Authors: | , , , , , , |
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| Format: | Journal Article |
| Published: |
Royal Society of Chemistry
2015
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| Online Access: | http://hdl.handle.net/20.500.11937/46444 |
| _version_ | 1848757558542598144 |
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| author | Zhang, P. Ma, Z. Wang, Y. Zou, Y. Lei, W. Pan, Y. Lu, Chunsheng |
| author_facet | Zhang, P. Ma, Z. Wang, Y. Zou, Y. Lei, W. Pan, Y. Lu, Chunsheng |
| author_sort | Zhang, P. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | To obtain a better understanding of the failure mechanism of lithium ion batteries during charging–discharging, we have systematically studied the mechanical properties of Li–Sn alloys based on density functional theory, including elastic constants such as the orientation-averaged bulk, shear and Young's moduli and Poisson's ratios, as well as the anisotropy and brittleness-ductility. It is shown that bulk, shear and Young's moduli of isotropic LixSn alloys decrease almost linearly with the increase of Li concentration. Further, based on the analysis of shear to bulk modulus and Poisson's ratios, it is inferred that Li–Sn alloys are brittle. The poor cycle performance and crushing failure of Sn anode materials during charging and discharging are mainly due to a transition of electrode material properties from ductile to brittle. |
| first_indexed | 2025-11-14T09:30:00Z |
| format | Journal Article |
| id | curtin-20.500.11937-46444 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T09:30:00Z |
| publishDate | 2015 |
| publisher | Royal Society of Chemistry |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-464442017-09-13T13:37:32Z A first principles study of the mechanical properties of Li-Sn alloys Zhang, P. Ma, Z. Wang, Y. Zou, Y. Lei, W. Pan, Y. Lu, Chunsheng To obtain a better understanding of the failure mechanism of lithium ion batteries during charging–discharging, we have systematically studied the mechanical properties of Li–Sn alloys based on density functional theory, including elastic constants such as the orientation-averaged bulk, shear and Young's moduli and Poisson's ratios, as well as the anisotropy and brittleness-ductility. It is shown that bulk, shear and Young's moduli of isotropic LixSn alloys decrease almost linearly with the increase of Li concentration. Further, based on the analysis of shear to bulk modulus and Poisson's ratios, it is inferred that Li–Sn alloys are brittle. The poor cycle performance and crushing failure of Sn anode materials during charging and discharging are mainly due to a transition of electrode material properties from ductile to brittle. 2015 Journal Article http://hdl.handle.net/20.500.11937/46444 10.1039/c5ra04685h Royal Society of Chemistry restricted |
| spellingShingle | Zhang, P. Ma, Z. Wang, Y. Zou, Y. Lei, W. Pan, Y. Lu, Chunsheng A first principles study of the mechanical properties of Li-Sn alloys |
| title | A first principles study of the mechanical properties of Li-Sn alloys |
| title_full | A first principles study of the mechanical properties of Li-Sn alloys |
| title_fullStr | A first principles study of the mechanical properties of Li-Sn alloys |
| title_full_unstemmed | A first principles study of the mechanical properties of Li-Sn alloys |
| title_short | A first principles study of the mechanical properties of Li-Sn alloys |
| title_sort | first principles study of the mechanical properties of li-sn alloys |
| url | http://hdl.handle.net/20.500.11937/46444 |