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Editors’ choice—4D neutron and X-ray tomography studies of high energy density primary batteries: Part II. multi-modal microscopy of LiSOCl2 cells

Ziesche, R. F.; Robinson, J. B.; Markötter, H.; Bradbury, R.; Tengattini, A.; Lenoir, N.; Helfen, L.; Kockelmann, W.; Kardjilov, N.; Manke, I.; Brett, D. J. L.; Shearing, P. R.

Abstract:
The ability to track electrode degradation, both spatially and temporally, is fundamental to understand performance loss during operation of lithium batteries. X-ray computed tomography can be used to follow structural and morphological changes in electrodes; however, the direct detection of electrochemical processes related to metallic lithium is difficult due to the low sensitivity to the element. In this work, 4-dimensional neutron computed tomography, which shows high contrast for lithium, is used to directly quantify the lithium diffusion process in spirally wound Li/SOCl$_{2}$ primary cells. The neutron dataset enables the quantification of the lithium transport from the anode and the accumulation inside the SOCl$_{2}$ cathode to be locally resolved. Complementarity between the collected neutron and X-ray computed tomographies is shown and by applying both methods in concert we have observed lithium diffusion blocking by the LiCl protection layer and identified all cell components which are difficult to distinguish using one of the methods alone.

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Verlagsausgabe §
DOI: 10.5445/IR/1000126498
Veröffentlicht am 24.11.2020
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Photonenforschung und Synchrotronstrahlung (IPS)
Publikationstyp Zeitschriftenaufsatz
Publikationsdatum 19.10.2020
Sprache Englisch
Identifikator ISSN: 0013-4651, 0096-4743, 0096-4786, 1945-6859, 1945-7111, 2002-2015, 2156-7395
KITopen-ID: 1000126498
HGF-Programm 56.03.10 (POF III, LK 01) Material a. Processes f. Energy Technol.
Erschienen in Journal of the Electrochemical Society
Verlag IOP Publishing
Band 167
Heft 14
Seiten Art. Nr.: 140509
Nachgewiesen in Web of Science
Scopus
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