Increase of Cycling Stability in Pilot-Scale 21700 Format Li-Ion Cells by Foil Tab Design

Li-ion cells of the industrially-relevant 21700 format were built on pilot-scale with tabs made from (a) the electrodes’ current collecting foils (Al and Cu, “foil tabs”) in comparison with (b) conventional tabs (Al and Ni) welded to the electrodes’ current collecting foils (“welded tabs”). Both cel...

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Autores principales:	Thomas Waldmann, Rares-George Scurtu, Daniel Brändle, Margret Wohlfahrt-Mehrens
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	lithium-ion battery 21700 format cell design cell production tab design Chemical technology TP1-1185 Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/cd577603309d492183ddd5b7f88096b5
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spelling	oai:doaj.org-article:cd577603309d492183ddd5b7f88096b52021-11-25T18:50:20ZIncrease of Cycling Stability in Pilot-Scale 21700 Format Li-Ion Cells by Foil Tab Design10.3390/pr91119082227-9717https://doaj.org/article/cd577603309d492183ddd5b7f88096b52021-10-01T00:00:00Zhttps://www.mdpi.com/2227-9717/9/11/1908https://doaj.org/toc/2227-9717Li-ion cells of the industrially-relevant 21700 format were built on pilot-scale with tabs made from (a) the electrodes’ current collecting foils (Al and Cu, “foil tabs”) in comparison with (b) conventional tabs (Al and Ni) welded to the electrodes’ current collecting foils (“welded tabs”). Both cell types use the same anode (graphite), cathode (NMC622), separator, electrolyte, as well as the same tab positions. This allows a direct comparison of welded tabs and foil tabs regarding formation, C-rate capability, cell electrical resistance, and long-term cycling stability tests. Our data reproducibly shows 14.4% longer cycling stability and 11.2% increased total charge throughput in the case of the cells with foil tabs until 80% SOH, which is likely due to less inhomogeneities in the case of the foil tab design.Thomas WaldmannRares-George ScurtuDaniel BrändleMargret Wohlfahrt-MehrensMDPI AGarticlelithium-ion battery21700 formatcell designcell productiontab designChemical technologyTP1-1185ChemistryQD1-999ENProcesses, Vol 9, Iss 1908, p 1908 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	lithium-ion battery 21700 format cell design cell production tab design Chemical technology TP1-1185 Chemistry QD1-999
spellingShingle	lithium-ion battery 21700 format cell design cell production tab design Chemical technology TP1-1185 Chemistry QD1-999 Thomas Waldmann Rares-George Scurtu Daniel Brändle Margret Wohlfahrt-Mehrens Increase of Cycling Stability in Pilot-Scale 21700 Format Li-Ion Cells by Foil Tab Design
description	Li-ion cells of the industrially-relevant 21700 format were built on pilot-scale with tabs made from (a) the electrodes’ current collecting foils (Al and Cu, “foil tabs”) in comparison with (b) conventional tabs (Al and Ni) welded to the electrodes’ current collecting foils (“welded tabs”). Both cell types use the same anode (graphite), cathode (NMC622), separator, electrolyte, as well as the same tab positions. This allows a direct comparison of welded tabs and foil tabs regarding formation, C-rate capability, cell electrical resistance, and long-term cycling stability tests. Our data reproducibly shows 14.4% longer cycling stability and 11.2% increased total charge throughput in the case of the cells with foil tabs until 80% SOH, which is likely due to less inhomogeneities in the case of the foil tab design.
format	article
author	Thomas Waldmann Rares-George Scurtu Daniel Brändle Margret Wohlfahrt-Mehrens
author_facet	Thomas Waldmann Rares-George Scurtu Daniel Brändle Margret Wohlfahrt-Mehrens
author_sort	Thomas Waldmann
title	Increase of Cycling Stability in Pilot-Scale 21700 Format Li-Ion Cells by Foil Tab Design
title_short	Increase of Cycling Stability in Pilot-Scale 21700 Format Li-Ion Cells by Foil Tab Design
title_full	Increase of Cycling Stability in Pilot-Scale 21700 Format Li-Ion Cells by Foil Tab Design
title_fullStr	Increase of Cycling Stability in Pilot-Scale 21700 Format Li-Ion Cells by Foil Tab Design
title_full_unstemmed	Increase of Cycling Stability in Pilot-Scale 21700 Format Li-Ion Cells by Foil Tab Design
title_sort	increase of cycling stability in pilot-scale 21700 format li-ion cells by foil tab design
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/cd577603309d492183ddd5b7f88096b5
work_keys_str_mv	AT thomaswaldmann increaseofcyclingstabilityinpilotscale21700formatliioncellsbyfoiltabdesign AT raresgeorgescurtu increaseofcyclingstabilityinpilotscale21700formatliioncellsbyfoiltabdesign AT danielbrandle increaseofcyclingstabilityinpilotscale21700formatliioncellsbyfoiltabdesign AT margretwohlfahrtmehrens increaseofcyclingstabilityinpilotscale21700formatliioncellsbyfoiltabdesign
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Increase of Cycling Stability in Pilot-Scale 21700 Format Li-Ion Cells by Foil Tab Design

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