Journal Article

IMPULSE-2025-00097

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Structural response of silicon-containing graphite anodes on lithium intercalation

Hölderle, T. ; Petz, D.MLZ* ; Kochetov, V.MLZ* ; Baran, V. ; Kriele, A.MLZ* ; Hegedüs, Z. ; Lienert, U. ; Avdeev, M. ; Müller-Buschbaum, P.MLZ* ; Senyshyn, A. (Corresponding author)MLZ*

2025
Elsevier Amsterdam

Please use a persistent id in citations: doi:10.1016/j.ensm.2025.104042

Abstract: This study investigates the impact of silicon content in the graphite anode of cylinder-type Li-ion batteries using operando neutron powder diffraction techniques. A batch of four different Li-ion cells is analyzed, with a focus on the structural response of active cell components during electrochemical cycling. The results indicate that high silicon content in the graphite anode causes a delay in the initial lithiation of graphite, shifting it towards higher voltages independent of the cell's internal resistance. Differential voltage, incremental capacity analyses and quantitative energy-dispersive X-ray spectroscopy, corroborate these structural changes. Additionally, X-ray diffraction computed tomography using a µm-sized synchrotron beam revealed local structural degradation and lithiation inhomogeneity in the high silicon content cells during cycling.

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

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Contributing Institute(s):

1. STRUCTURE (STRUCTURE)
2. SPODI (SPODI)

Experiment(s):

1. SPODI: High resolution powder diffractometer (SR8a)

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 ; Essential Science Indicators ; IF >= 20 ; JCR ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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