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Characterization and Laser Structuring of Aqueous Processed Li(Ni$_{0.6}$Mn$_{0.2}$Co$_{0.2}$)O$_{2}$ Thick-Film Cathodes for Lithium-Ion Batteries

Zhu, Penghui 1; Han, Jiahao 1; Pfleging, Wilhelm ORCID iD icon 1
1 Institut für Angewandte Materialien – Angewandte Werkstoffphysik (IAM-AWP), Karlsruher Institut für Technologie (KIT)


Lithium-ion batteries have led the revolution in portable electronic devices and electrical vehicles due to their high gravimetric energy density. In particular, layered cathode material Li(Ni0.6Mn0.2Co0.2)O2 (NMC 622) can deliver high specific capacities of about 180 mAh/g. However, traditional cathode manufacturing involves high processing costs and environmental issues due to the use of organic binder polyvinylidenfluoride (PVDF) and highly toxic solvent N-methyl-pyrrolidone (NMP). In order to overcome these drawbacks, aqueous processing of thick-film NMC 622 cathodes was studied using carboxymethyl cellulose and fluorine acrylic hybrid latex as binders. Acetic acid was added during the mixing process to obtain slurries with pH values varying from 7.4 to 12.1. The electrode films could be produced with high homogeneity using slurries with pH values smaller than 10. Cyclic voltammetry measurements showed that the addition of acetic acid did not affect the redox reaction of active material during charging and discharging. Rate capability tests revealed that the specific capacities with higher slurry pH values were increased at C-rates above C/5. ... mehr

Verlagsausgabe §
DOI: 10.5445/IR/1000136905
Veröffentlicht am 30.08.2021
DOI: 10.3390/nano11071840
Zitationen: 11
Web of Science
Zitationen: 10
Zitationen: 13
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Angewandte Materialien – Angewandte Werkstoffphysik (IAM-AWP)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2021
Sprache Englisch
Identifikator ISSN: 2079-4991
KITopen-ID: 1000136905
HGF-Programm 38.02.02 (POF IV, LK 01) Components and Cells
Erschienen in Nanomaterials
Verlag MDPI
Band 11
Heft 7
Seiten Art.-Nr.: 1840
Bemerkung zur Veröffentlichung Gefördert durch den KIT-Publikationsfonds
Vorab online veröffentlicht am 16.07.2021
Schlagwörter lithium-ion batteries; NMC 622; aqueous processing; thick-film electrode; laser structuring; cyclic voltammetry; rate capability
Nachgewiesen in Scopus
Web of Science
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