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Similarities in Lithium Growth at Vastly Different Rates

Becherer, Julian 1; Kramer, Dominik 1; Mönig, Reiner 1
1 Karlsruher Institut für Technologie (KIT)


Lithium electrodeposition is important for lithium metal batteries and is presently a safety and reliability concern for the lithium-ion technology. In the literature, many models for the growth of dendrites can be found and a strong dependence on deposition rate is expected. To elucidate the process of the lithium deposition, operando light microscopy at the physical resolution limit of light was performed at rates varying by more than three orders of magnitude. The results show different growth regimes depending on the rate, and where needles, bushes, or accelerated bushes dominate the deposition. All these deposits are based on small crystalline needles and flakes. Little evidence for concentration gradient driven deposition was found. At the highest rate, the electrolyte ionically depletes, but the deposition continues by non-directional bush growth mainly from their insides. An important step at all rates is the insertion into defects in the crystalline lithium.

Verlagsausgabe §
DOI: 10.5445/IR/1000140430
Veröffentlicht am 29.11.2021
DOI: 10.1002/celc.202100870
Zitationen: 2
Web of Science
Zitationen: 1
Zitationen: 2
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Angewandte Materialien - Werkstoff- und Biomechanik (IAM-WBM)
Publikationstyp Zeitschriftenaufsatz
Publikationsdatum 13.10.2021
Sprache Englisch
Identifikator ISSN: 2196-0216, 2196-0216
KITopen-ID: 1000140430
HGF-Programm 38.02.01 (POF IV, LK 01) Fundamentals and Materials
Erschienen in ChemElectroChem
Verlag John Wiley and Sons
Band 8
Heft 20
Seiten 3882–3893
Vorab online veröffentlicht am 08.09.2021
Nachgewiesen in Scopus
Web of Science
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