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Effect of Flame Retardants and Electrolyte Variations on Li-Ion Batteries

Fulik, Natalia 1; Hofmann, Andreas ORCID iD icon 1; Nötzel, Dorit 1; Müller, Marcus ORCID iD icon 2; Reuter, Ingo 1; Müller, Freya 3; Smith, Anna 3; Hanemann, Thomas 1
1 Institut für Angewandte Materialien – Werkstoffkunde (IAM-WK), Karlsruher Institut für Technologie (KIT)
2 Karlsruher Institut für Technologie (KIT)
3 Institut für Angewandte Materialien – Energiespeichersysteme (IAM-ESS), Karlsruher Institut für Technologie (KIT)

Abstract (englisch):

Lithium-ion batteries are being increasingly used and deployed commercially. Cell-level improvements that address flammability characteristics and thermal runaway are currently being intensively tested and explored. In this study, three additives—namely, lithium oxalate, sodium fumarate and sodium malonate—which exhibit fire-retardant properties are investigated with respect to their incorporation into graphite anodes and their electro/chemical interactions within the anode and the cell material studied. It has been shown that flame-retardant concentrations of up to approximately 20 wt.% within the anode coating do not cause significant capacity degradation but can provide a flame-retardant effect due to their inherent, fire-retardant release of CO2 gas. The flame-retardant-containing layers exhibit good adhesion to the current collector. Their suitability in lithium-ion cells was tested in pouch cells and, when compared to pure graphite anodes, showed almost no deterioration regarding cell capacity when used in moderate (≤20 wt.%) concentrations.


Verlagsausgabe §
DOI: 10.5445/IR/1000155505
Veröffentlicht am 01.02.2023
Originalveröffentlichung
DOI: 10.3390/batteries9020082
Scopus
Zitationen: 2
Web of Science
Zitationen: 1
Dimensions
Zitationen: 2
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Angewandte Materialien – Energiespeichersysteme (IAM-ESS)
Institut für Angewandte Materialien – Werkstoffkunde (IAM-WK)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2023
Sprache Englisch
Identifikator ISSN: 2313-0105
KITopen-ID: 1000155505
HGF-Programm 38.02.01 (POF IV, LK 01) Fundamentals and Materials
Erschienen in Batteries
Verlag MDPI
Band 9
Heft 2
Seiten 82
Bemerkung zur Veröffentlichung This article belongs to the Special Issue Electrode Materials and Electrolyte for Rechargeable Batteries.
Vorab online veröffentlicht am 26.01.2023
Nachgewiesen in Web of Science
Scopus
Dimensions
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