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The ultrafast laser ablation of Li(Ni$_{0.6}$Mn$_{0.2}$Co$_{0.2}$)O$_{2}$ electrodes with high mass loading

Zhu, P.; Seifert, H. J.; Pfleging, W.

Abstract:
Lithium-ion batteries have become the most promising energy storage devices in recent years. However, the simultaneous increase of energy density and power density is still a huge challenge. Ultrafast laser structuring of electrodes is feasible to increase power density of lithium-ion batteries by improving the lithium-ion diffusion kinetics. The influences of laser processing pattern and film thickness on the rate capability and energy density were investigated using Li(Ni0.6Mn0.2Co0.2)O2 (NMC 622) as cathode material. NMC 622 electrodes with thicknesses from 91 µm to 250 µm were prepared, while line patterns with pitch distances varying from 200 µm to 600 µm were applied. The NMC 622 cathodes were assembled opposing lithium using coin cell design. Cells with structured, 91 µm thick film cathodes showed lesser capacity losses with C-rates 3C compared to cells with unstructured cathode. Cells with 250 µm thick film cathode showed higher discharge capacity with low C-rates of up to C/5, and the structured cathodes showed higher discharge capacity, with C-rates of up to 1C. However, the discharge capacity deteriorated with higher C-rate. ... mehr

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Verlagsausgabe §
DOI: 10.5445/IR/1000099496
Veröffentlicht am 04.11.2019
Originalveröffentlichung
DOI: 10.3390/app9194067
Scopus
Zitationen: 6
Web of Science
Zitationen: 4
Dimensions
Zitationen: 5
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Angewandte Materialien - Angewandte Werkstoffphysik (IAM-AWP)
Karlsruhe Nano Micro Facility (KNMF)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2019
Sprache Englisch
Identifikator ISSN: 2076-3417
KITopen-ID: 1000099496
HGF-Programm 37.01.02 (POF III, LK 01) Components and Cells
Erschienen in Applied Sciences
Verlag MDPI
Band 9
Heft 19
Seiten Article: 4067
Projektinformation DFG, DFG EIN, PF 392/9-1
Bemerkung zur Veröffentlichung Gefördert durch den KIT-Publikationsfonds
Schlagwörter lithium-ion battery; thick film electrode; ultrafast laser ablation; NMC 622; cyclic voltammetry; galvanostatic measurement; KNMF 2018-019-021333 LMP;
Nachgewiesen in Dimensions
Web of Science
Scopus
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