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Tuning Electrochemical Performance of Lithium-Ion Cells By Introducing Laser-Generated Electrode Architectures

Pfleging, Wilhelm; Zheng, Yijing; Shi, Huifeng; Zhang, Yuefei; Smyrek, Peter

Abstract:
Laser technology in lithium-ion battery (LIB) manufacturing could enable rapid manufacturing, high reliability, and a reduction of production costs. Laser cutting and welding processes for batteries already reached a high industrial readiness level. A new approach which is assigned to laser micro-structuring of battery materials has a huge impact on battery performance and operational lifetime of lithium-ion cells and an up-scaling for industrial production is currently investigated. So far, different types of laser structuring were used on metallic current collectors, separators, and thin or thick film composite electrodes. For thin metallic current collector foils, at anode and cathode sides, self-organized structuring by laser-induced periodical surface structures were successfully applied for improving electrode film adhesion. Direct laser ablation was applied for the generation of capillary structures, which was found to be most powerful in order to transform electrode and separator surfaces to superwicking. Thick film composite electrodes in lithium-ion cells are complex multi-material systems with defined material components, grain sizes, porosities, and pore size distributions in the micrometer and sub-micron range. ... mehr



Zugehörige Institution(en) am KIT Institut für Angewandte Materialien - Angewandte Werkstoffphysik (IAM-AWP)
Publikationstyp Vortrag
Publikationsdatum 15.10.2019
Sprache Englisch
Identifikator KITopen-ID: 1000100352
HGF-Programm 37.01.02 (POF III, LK 01) Components and Cells
Veranstaltung 236th ECS Meeting (2019), Atlanta, GA, USA, 13.10.2019 – 17.10.2019
Projektinformation DFG, DFG EIN, PF 392/9-1
Externe Relationen Abstract/Volltext
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