Journal Article

IMPULSE-2025-00152

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Understanding the lithium loss in 5 Ah multilayer pouch cells with silicon-dominant anodes and NCA cathodes during cyclic aging

Pham, T. A. (Corresponding author)MLZ* ; Friedrich, S. ; Sommer, A. ; Pivarníková, I.MLZ* ; Didier, C. ; Maróti, B. ; Jossen, A. ; Peterson, V. K. ; Müller-Buschbaum, P.MLZ* ; Gilles, R.MLZ*

2025
Elsevier New York, NY [u.a.]

Please use a persistent id in citations: doi:10.1016/j.jpowsour.2025.237769

Abstract: In this work, we demonstrated that cyclic aging leads to loss of lithium (Li) from the LiNi0.8Co0.15Al0.05O1.985 (NCA) electrode of multilayer pouch cells, with the lost Li found in the silicon (Si)-dominant anode. Electrochemical data showed that less Li is retrieved from the Si electrode during discharge at a 70 % state of health (end of life) than at the beginning of life. To investigate this process, in operando neutron diffraction of full cells was employed during cycling and revealed smaller changes to the and unit cell parameters of the NCA electrode at the end of life than at the beginning of life. Prompt gamma neutron activation analysis conducted on electrodes extracted from these cells confirmed that some of the Li lost from the NCA is found in the Si counter electrode.

Keyword(s): Energy (1st) ; Materials Science (2nd)

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Contributing Institute(s):

1. ADVMAT (ADVMAT)
2. E13 (E13)

Experiment(s):

1. Measurement at external facility

Appears in the scientific report 2025

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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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