Extended cycle life implications of fast charging for lithium-ion battery cathode
In: Energy Storage Materials, Jg. 41 (2021-10-01), S. 656-666
Online
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Zugriff:
Enabling extreme fast charging (XFC, ≤10–15 min charging) requires a comprehensive understanding of its implications. While lithium plating is a key bottleneck for the anode, the full extent of limitations for the cathode are not well-understood, particularly in extended-cycle settings with well-defined battery designs and conditions. This article presents cycle-life implications of XFC on cathodes at multiple length scales, combining electrochemical analyses, degradation modeling, and post-test characterizations. The comprehensive test matrix includes 41 well-defined gr/NMC pouch cells under varied fast-charge rates (1–9C) and state-of-charges cycled up to 1000 times. Cathode issues remain minimal in early cycling, but begin to accelerate in later life, when distinct cracking is found and identified as a fatigue mechanism. The bulk structure of cathodes remains intact, but distinct particle surface reconstruction is observed; however, this shows less pronounced effect on cathode aging than does cracking.
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Extended cycle life implications of fast charging for lithium-ion battery cathode
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Autor/in / Beteiligte Person: | Wen, Jianguo ; Polzin, Bryant J. ; Lin, Yulin ; Yu, Lei ; Trask, Stephen E. ; Yang, Zhenzhen ; Gasper, Paul ; Colclasure, Andrew M. ; Smith, Kandler ; Dufek, Eric J. ; Tanim, Tanvir R. ; Evans, Michael C. ; Weddle, Peter J. ; Dickerson, Charles C. ; Bloom, Ira ; Dunlop, Alison R. ; Jansen, Andrew N. ; Tsai, Yifen ; Parameswara Rao Chinnam |
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Zeitschrift: | Energy Storage Materials, Jg. 41 (2021-10-01), S. 656-666 |
Veröffentlichung: | Elsevier BV, 2021 |
Medientyp: | unknown |
ISSN: | 2405-8297 (print) |
DOI: | 10.1016/j.ensm.2021.07.001 |
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