Self-Healing Wide and Thin Li Metal Anodes Prepared Using Calendared Li Metal Powder for Improving Cycle Life and Rate Capability
| العنوان: | Self-Healing Wide and Thin Li Metal Anodes Prepared Using Calendared Li Metal Powder for Improving Cycle Life and Rate Capability |
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| المؤلفون: | Yong Min Lee, Dahee Jin, Kyuman Kim, Myung-Hyun Ryou, Jeonghun Oh, Taejin Jo, Alex Friesen |
| المصدر: | ACS Applied Materials & Interfaces. 10:16521-16530 |
| بيانات النشر: | American Chemical Society (ACS), 2018. |
| سنة النشر: | 2018 |
| مصطلحات موضوعية: | Battery (electricity), Materials science, 02 engineering and technology, 010402 general chemistry, 021001 nanoscience & nanotechnology, Electrochemistry, 01 natural sciences, 0104 chemical sciences, Anode, Metal, visual_art, Electrode, visual_art.visual_art_medium, Metal powder, General Materials Science, Composite material, 0210 nano-technology, Faraday efficiency, Deposition (law) |
| الوصف: | The commercialization of Li metal electrodes is a long-standing objective in the battery community. To accomplish this goal, the formation of Li dendrites and mossy Li deposition, which cause poor cycle performance and safety issues, must be resolved. In addition, it is necessary to develop wide and thin Li metal anodes to increase not only the energy density, but also the design freedom of large-scale Li-metal-based batteries. We solved both issues by developing a novel approach involving the application of calendared stabilized Li metal powder (LiMP) electrodes as anodes. In this study, we fabricated a 21.5 cm wide and 40 μm thick compressed LiMP electrode and investigated the correlation between the compression level and electrochemical performance. A high level of compression (40% compression) physically activated the LiMP surface to suppress the dendritic and mossy Li metal formation at high current densities. Furthermore, as a result of the LiMP self-healing because of electrochemical activation, the 40% compressed LiMP electrode exhibited an excellent cycle performance (reaching 90% of the initial discharge capacity after the 360th cycle), which was improved by more than a factor of 2 compared to that of a flat Li metal foil with the same thickness (90% of the initial discharge capacity after the 150th cycle). |
| تدمد: | 1944-8252 1944-8244 |
| DOI: | 10.1021/acsami.8b02740 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2c36b794c808272be6d484fd2dc256c5 https://doi.org/10.1021/acsami.8b02740 |
| رقم الانضمام: | edsair.doi.dedup.....2c36b794c808272be6d484fd2dc256c5 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 19448252 19448244 |
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| DOI: | 10.1021/acsami.8b02740 |