Journal Article

FZJ-2024-02386

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png The Influence of Electrolyte Volume on Calendaric Aging of Lithium‐Ion Batteries

Klick, S. (Corresponding author) ; Stahl, G. ; Sauer, D. U.FZJ*

2024
Wiley-VCH Weinheim [u.a.]

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Please use a persistent id in citations: doi:10.1002/ente.202300566  doi:10.34734/FZJ-2024-02386

Abstract: Lithium-ion cells with graphite anodes and nickel–manganese–cobalt oxide (NMC622) cathodes are filled with three different amounts of electrolyte. During formation, incremental capacity analysis indicates small differences in the formation processes between cells with insufficient electrolytes to fill all pores and those with an electrolyte volume above the total pore volume of the cell. Complimentary analysis of the gases developed during formation shows that the composition of these cells differs from the cells with a sufficient electrolyte. The aging of cells under high temperature (60 °C) and high constant voltage of 4.2 V is studied. During aging, cells with higher amounts of electrolyte degrade substantially slower. Based on data available from electrical tests, a theory explaining the volume-dependent rise of resistance and capacity decay is proposed.

Note: Gefördert durch zwei weitere BMBF-Projekte - Meet-HiEnD III (BMBF03XP0258C) & BatgasMod (BMBF03XP0311B).

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Contributing Institute(s):

1. Helmholtz-Institut Münster Ionenleiter für Energiespeicher (IEK-12)

Research Program(s):

1. 1223 - Batteries in Application (POF4-122) (POF4-122)
2. BMBF 03XP0349A - E-FloA - Elektrolyt-Floating-Analyse an Lithium-Ionen-Zellen mit dem Ziel der Quantifizierung der Elektrolytdegradation und Deckschichtbildung (BMBF-03XP0349A) (BMBF-03XP0349A)

Appears in the scientific report 2024

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Database coverage:
; ; ; Clarivate Analytics Master Journal List ; Current Contents - Engineering, Computing and Technology ; DEAL Wiley ; Essential Science Indicators ; IF < 5 ; JCR ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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