Počet záznamů: 1
Observation of preferential sputtering of Si/graphite anodes from Li-ion cells by GD-OES and its validation by neutron depth profiling
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SYSNO ASEP 0583172 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Observation of preferential sputtering of Si/graphite anodes from Li-ion cells by GD-OES and its validation by neutron depth profiling Tvůrce(i) Pivarníková, I. (DE)
Flügel, M. (DE)
Paul, N. (DE)
Cannavó, Antonino (UJF-V) ORCID, SAI
Ceccio, Giovanni (UJF-V) ORCID, RID, SAI
Vacík, Jiří (UJF-V) RID, ORCID, SAI
Müller-Buschbaum, P. (DE)
Wohlfahrt-Mehrens, M. (DE)
Gilles, R. (DE)
Waldmann, T.A. (DE)Celkový počet autorů 10 Číslo článku 233972 Zdroj.dok. Journal of Power Sources. - : Elsevier - ISSN 0378-7753
Roč. 594, FEB (2024)Poč.str. 11 s. Forma vydání Tištěná - P Jazyk dok. eng - angličtina Země vyd. NL - Nizozemsko Klíč. slova Lithium -ion batteries ; Neutron depth profiling (NDP) ; Glow discharge optical emission spectroscopy ; GD-OES ; Post-mortem analysis ; Lithium plating ; SEI growth ; Aging mechanism ; Si/graphite anodes Obor OECD Atomic, molecular and chemical physics (physics of atoms and molecules including collision, interaction with radiation, magnetic resonances, Mössbauer effect) CEP EF16_013/0001812 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy Výzkumná infrastruktura CICRR - 90241 - Centrum výzkumu Řež s.r.o. Způsob publikování Omezený přístup Institucionální podpora UJF-V - RVO:61389005 UT WOS 001159224300001 EID SCOPUS 85182896725 DOI 10.1016/j.jpowsour.2023.233972 Anotace Although the loss of Li inventory (LLI) is a common aging mechanism in Li-ion batteries, there are only few methods capable of comprehensive depth profiling within the bulk of the electrode to locate the residual Li. Two post-mortem analytical methods, which can be used to obtain quantified Li depth profiles to depths greater than 10 mu m from the electrode surface are neutron depth profiling (NDP) and glow discharge optical emission spectroscopy (GD-OES). In this work, the validation of GD-OES using NDP by examining the Si/graphite anodes of cylindrical 21700 cells is presented. One anode was in a pristine/fresh state, two anodes were aged to the state of health (SOH) 90% and 76% at 45 C-degrees respectively, and suffered from heavy solid electrolyte interphase (SEI) growth, and the fourth anode was aged to SOH 60% at 0 C-degrees and exhibited Li plating. It is demonstrated that Li plating leads to a faster sputter rate of the Li-rich anode surface. An adapted method is introduced to incorporate the changing sputter rate into the depth profile calculation. For the aged anodes, the progressive aging of the anodes leads to a higher amount of irreversibly bound Li on the anode surface. Pracoviště Ústav jaderné fyziky Kontakt Markéta Sommerová, sommerova@ujf.cas.cz, Tel.: 266 173 228 Rok sběru 2025 Elektronická adresa https://doi.org/10.1016/j.jpowsour.2023.233972
Počet záznamů: 1