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Ultrafast-Laser Micro-Structuring of LiNi$_{0.8}$Mn$_{0.1}$Co$_{0.1}$O$_2$ Cathode for High-Rate Capability of Three-Dimensional Li-ion Batteries

Tran, Minh Xuan; Smyrek, Peter 1; Park, Jihun; Pfleging, Wilhelm ORCID iD icon 1; Lee, Joong Kee
1 Institut für Angewandte Materialien – Angewandte Werkstoffphysik (IAM-AWP), Karlsruher Institut für Technologie (KIT)

Abstract:

Femtosecond ultrafast-laser micro-patterning was employed to prepare a three-dimensional (3D) structure for the tape-casting Ni-rich LiNi$_{0.8}$Mn$_{0.1}$Co$_{0.1}$O$_2$ (NMC811) cathode. The influences of laser structuring on the electrochemical performance of NMC811 were investigated. The 3D-NMC811 cathode retained capacities of 77.8% at 2 C of initial capacity at 0.1 C, which was thrice that of 2D-NMC811 with an initial capacity of 27.8%. Cyclic voltammetry (CV) and impedance spectroscopy demonstrated that the 3D electrode improved the Li$^+$ ion transportation at the electrode–electrolyte interface, resulting in a higher rate capability. The diffusivity coefficient D$_{Li+}$, calculated by both CV and electrochemical impedance spectroscopy, revealed that 3D-NMC811 delivered faster Li$^+$ ion transportation with higher D$_{Li+}$ than that of 2D-NMC811. The laser ablation of the active material also led to a lower charge–transfer resistance, which represented lower polarization and improved Li$^+$ ion diffusivity.


Verlagsausgabe §
DOI: 10.5445/IR/1000153267/pub
Veröffentlicht am 05.12.2022
Originalveröffentlichung
DOI: 10.3390/nano12213897
Scopus
Zitationen: 12
Web of Science
Zitationen: 10
Dimensions
Zitationen: 11
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Angewandte Materialien – Angewandte Werkstoffphysik (IAM-AWP)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2022
Sprache Englisch
Identifikator ISSN: 2079-4991
KITopen-ID: 1000153267
HGF-Programm 38.02.02 (POF IV, LK 01) Components and Cells
Erschienen in Nanomaterials
Verlag MDPI
Band 12
Heft 21
Seiten Art.-Nr.: 3897
Vorab online veröffentlicht am 04.11.2022
Schlagwörter three-dimensional batteries, LiNi0.8Mn0.1Co0.1O2 cathode, femtosecond ultrafast laser, electrode micro-structuring
Nachgewiesen in Web of Science
Scopus
Dimensions
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