Heterogeneous Behavior of Lithium Plating during Extreme Fast Charging
| Autor: | Andrew N. Jansen, Vivek Thampy, Alison R. Dunlop, Hans-Georg Steinrück, Michael C. Evans, Tanvir R. Tanim, Eric J. Dufek, Stephen E. Trask, Chuntian Cao, Johanna Nelson Weker, Bryant J. Polzin, Michael F. Toney, Partha P. Paul |
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| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Materials science
Fast charging battery safety lithium plating General Engineering extreme fast charging General Physics and Astronomy chemistry.chemical_element General Chemistry lithium-ion battery Engineering physics Lithium-ion battery lcsh:QC1-999 X-ray diffraction General Energy chemistry Plating Electrode General Materials Science Lithium lcsh:Physics |
| Zdroj: | Cell Reports Physical Science, Vol 1, Iss 7, Pp 100114-(2020) |
| ISSN: | 2666-3864 |
| Popis: | Summary Broad use of global or spatially averaging measurements over a cell to characterize highly localized Li plating phenomena in lithium-ion batteries during fast charging has created a disconnect between measurements and the underlying causes. Consequently, the field is missing a clear path to implementing fast charging as well as to expand into extreme fast charging (XFC). Aiming to bridge these gaps, we present a detailed look into local detection of Li plating and the consequent cycle life implications for electrodes and cells under XFC by utilizing electrochemistry and high-energy X-ray diffraction. Significant heterogeneity in Li plating during XFC results in accelerated and non-uniform cycle life losses, in contrast to the prevailing acceptance that C rate is correlated to Li plating for XFC. This behavior is triggered by local electrode heterogeneity, which has yet to be identified and is not apparent in volume-averaged quantifications. A better understanding of these multiscale local electrode heterogeneities is crucial for identifying pathways to enable XFC. |
| Databáze: | OpenAIRE |
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