Journal Article

IMPULSE-2021-00049

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Inhomogeneous distribution of lithium and electrolyte in aged Li-ion cylindrical cells

Mühlbauer, M. J. ; Petz, D.MLZ* ; Baran, V.MLZ* ; Dolotko, O. ; Hofmann, M.MLZ* ; Kostecki, R. ; Senyshyn, A. (Corresponding author)MLZ*

2020
Elsevier New York, NY [u.a.]

Please use a persistent id in citations: doi:10.1016/j.jpowsour.2020.228690

Abstract: Carbonate-based electrolytes in Li-ion batteries exhibit long range order in a frozen state, which enables their non-destructive analysis by diffraction methods. In the current study the spatial distribution of lithium and electrolyte inside the graphite anode was determined in cycled Li-ion cells using monochromatic spatially-resolved neutron diffraction measurements at 150 K. The results indicate a loss of lithium and electrolyte and their non-uniform distribution in the graphite anode in aged Li-ion cells. The observed lithium and electrolyte losses are directly correlated with two electrochemical performance degradation mechanisms, which are responsible for the cell capacity fade.

Keyword(s): Energy (1st) ; Crystallography (2nd) ; Condensed Matter Physics (2nd) ; Chemistry (2nd)

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Contributing Institute(s):

1. STRUCTURE (STRUCTURE)

Experiment(s):

1. SPODI: High resolution powder diffractometer (SR8a)
2. STRESS-SPEC: Materials science diffractometer (SR3)

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Database coverage:
; Clarivate Analytics Master Journal List ; Current Contents - Engineering, Computing and Technology ; Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; Essential Science Indicators ; IF >= 5 ; JCR ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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