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Lithium‐Diffusion Induced Capacity Losses in Lithium‐Based Batteries

Rehnlund, David 1; Wang, Zhaohui; Nyholm, Leif
1 Institut für Angewandte Materialien – Energiespeichersysteme (IAM-ESS), Karlsruher Institut für Technologie (KIT)

Abstract:

Rechargeable lithium-based batteries generally exhibit gradual capacity losses resulting in decreasing energy and power densities. For negative electrode materials, the capacity losses are largely attributed to the formation of a solid electrolyte interphase layer and volume expansion effects. For positive electrode materials, the capacity losses are, instead, mainly ascribed to structural changes and metal ion dissolution. This review focuses on another, so far largely unrecognized, type of capacity loss stemming from diffusion of lithium atoms or ions as a result of concentration gradients present in the electrode. An incomplete delithiation step is then seen for a negative electrode material while an incomplete lithiation step is obtained for a positive electrode material. Evidence for diffusion-controlled capacity losses is presented based on published experimental data and results obtained in recent studies focusing on this trapping effect. The implications of the diffusion-controlled Li-trapping induced capacity losses, which are discussed using a straightforward diffusion-based model, are compared with those of other phenomena expected to give capacity losses. ... mehr


Verlagsausgabe §
DOI: 10.5445/IR/1000146655
Originalveröffentlichung
DOI: 10.1002/adma.202108827
Scopus
Zitationen: 40
Web of Science
Zitationen: 37
Dimensions
Zitationen: 43
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Angewandte Materialien – Energiespeichersysteme (IAM-ESS)
Publikationstyp Zeitschriftenaufsatz
Publikationsdatum 12.05.2022
Sprache Englisch
Identifikator ISSN: 0935-9648, 1521-4095
KITopen-ID: 1000146655
HGF-Programm 38.02.02 (POF IV, LK 01) Components and Cells
Erschienen in Advanced Materials
Verlag John Wiley and Sons
Band 34
Heft 19
Seiten Art. Nr.: 2108827
Vorab online veröffentlicht am 26.02.2022
Nachgewiesen in Dimensions
Scopus
Web of Science
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