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Lithium-Ion Battery—3D Micro-/Nano-Structuring, Modification and Characterization

Pfleging, Wilhelm; Gotcu, Petronela; Smyrek, Peter; Zheng, Yijing; Lee, Joong Kee; Seifert, Hans Jürgen

Laser processing technologies for micro-/nanostructuring of electrode materials have a great potential in improving the electrochemical performance and operational lifetime of lithium-ion cells. Different types of laser structuring were used on different surfaces such as metallic current collectors and thin or thick film electrodes. For thin metallic current collector foils, at anode and cathode sides, the self-organized structuring by laser-induced periodical surface structures and laser interference methods was successfully applied for improving electrode film adhesion and cell impedance. For thin and thick film electrode layers direct laser ablation with structure sizes down to the micrometer range and high aspect ratios was found most powerful in order to create three-dimensional (3D) cell architectures with benefits regarding cell performance and a homogenous wetting of composite electrodes with liquid electrolyte. A huge impact of laser formed 3D batteries regarding capacity retention and cell lifetime at high charging and discharging rates was detected. The impact on diffusion kinetics of laser structured 3D electrodes was studied using classical methods such galvanostatic intermittent titration technique and cyclic voltammetry. ... mehr

DOI: 10.1007/978-3-030-59313-1_11
Zugehörige Institution(en) am KIT Institut für Angewandte Materialien - Angewandte Werkstoffphysik (IAM-AWP)
Publikationstyp Buchaufsatz
Publikationsjahr 2020
Sprache Englisch
Identifikator ISBN: 978-3-030-59312-4
ISSN: 0933-033X
KITopen-ID: 1000127092
HGF-Programm 37.01.02 (POF III, LK 01) Components and Cells
Erschienen in Laser Micro-Nano-Manufacturing and 3D Microprinting. Ed.: A. Hu
Verlag Springer International Publishing
Seiten 313–347
Serie Springer Series in Materials Scienc ; 309
Projektinformation BMBF, 01DR14018
DFG, DFG EIN, PF 392/9-1
Vorab online veröffentlicht am 29.11.2020
Schlagwörter lithium-ion battery, electrode architecture, laser-induced breakdown spectroscopy, post mortem analyzes, 3D battery, laser materials processing, current collector, micro-/nano-structuring, LIPSS, Diffusion kinetics
Nachgewiesen in Scopus
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