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Laser materials processing and analytics in battery manufacturing – new design concepts and materials

Pfleging, Wilhelm

Abstract:
Lithium-ion batteries suffer so far from high production costs, restricted process reliability, small energy and power density, and short operational lifetime. In order to overcome these drawbacks, laser materials processing is introduced in battery manufacturing in combination with advanced design rules and new electrode materials. Laser patterning of metallic current collectors and active material of thick film electrodes by laser-induced periodical surface structures (LIPSS) and direct laser ablation, respectively, is a research approach for the realization of three-dimensional (3D) electrode architectures that includes the ability of process up-scale and transfer of the 3D battery concept to lithium-ion cells with high energy and power. 3D electrode configurations result in improved high current capability of the cells compared to cells with conventional 2D electrodes due to increased active surface area, reduced mechanical stress during electrochemical charge/discharge cycles, and overall decreased cell impedance. Furthermore, laser generated micro-capillary structures turn composite electrodes into superwicking leading to a ra ... mehr



Zugehörige Institution(en) am KIT Institut für Angewandte Materialien - Angewandte Werkstoffphysik (IAM-AWP)
Karlsruhe Nano Micro Facility (KNMF)
Publikationstyp Vortrag
Jahr 2018
Sprache Englisch
Identifikator urn:nbn:de:swb:90-894698
KITopen-ID: 1000089469
HGF-Programm 37.01.02 (POF III, LK 01)
Veranstaltung 5th International Symposium on Laser Interaction with Matter (LIMIS 2018), Changsha, China, 11.11.2018 – 13.11.2018
Projektinformation DFG, DFG EIN, PF 392/9-1
Externe Relationen Siehe auch
Schlagworte Project-ID: 2018-019-021333 (KNMF-LMP), Laser structuring, ultrafast laser, electrode wettability, lithium-ion diffusion, lithium-ion battery, laser-induced breakdown spectroscopy
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