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DOI: 10.5445/IR/1000085851
Frei zugänglich ab 09.02.2019
DOI: 10.1109/3M-NANO.2017.8286297

Laser micro structuring of composite Li (Ni0.6Mn0.2Co0.2) O2cathode layersfor lithium-ion batteries

Rakebrandt, J.-H.; Smyrek, P.; Zheng, Y.; Seifert, H.J.; Pfleging, W.

Lithium-ion batteries (LIB) using lithium nickel
manganese cobalt oxide (Li(Ni1/3Mn1/3Co1/3)O2, NMC-111) as
cathode material have already become one of the most important
types of mobile power sources due to their high gravimetric and
volumetric capacity. Nevertheless, the automotive industry needs
batteries with a further improved energy density to develop
electric vehicles (EV) with comparable or even higher range than
automobiles with ICE (Internal combustion engine). One
approach to enhance the energy density is to increase the nickel
content of the NMC cathode material. Therefore, NMC-622
cathodes were produced via tape casting containing 80 wt% of
active material with a film thickness of 54 μm. The specific
capacities were measured using galvanostatic measurements at
different charging/discharging currents for cells with structured
and unstructured electrodes. Laser-assisted generation of threedimensional
architectures provides an increased active surface
area to enhance interfacial kinetics with short lithium-ion
diffusion paths. Ultrafast laser ablation was used in order to
avoid a thermal-induced damage of ... mehr

Zugehörige Institution(en) am KIT Institut für Angewandte Materialien - Angewandte Werkstoffphysik (IAM-AWP)
Karlsruhe Nano Micro Facility (KNMF)
Publikationstyp Proceedingsbeitrag
Jahr 2018
Sprache Englisch
Identifikator ISBN: 978-1-5386-1082-4
URN: urn:nbn:de:swb:90-858514
KITopen ID: 1000085851
HGF-Programm 37.01.02; LK 01
Erschienen in 2017 IEEE International Conference on Manipulation, Manufacturing and Measurement on the Nanoscale (3M-NANO), Shanghai, China, 7–11 August 2017
Verlag IEEE, Piscataway (NJ)
Seiten 57–60
Projektinformation FabSurfWAR (EU, H2020, 644971)
Schlagworte lithium-ion battery, lithium nickel manganese cobalt oxide, battery performance, laser structuring, ultrafast laser, 3D battery, nickel-rich NMC, high power battery
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