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Development of micro dispense and jetting process of battery electrodes for the fabrication of substrate integrated micro batteries

: Hahn, R.; Ferch, M.; Tribowski, K.; Hoeppner, K.; Marquardt, K.; Lang, K.-D.

Otto, T. ; Messe Frankfurt; Fraunhofer-Institut für Elektronische Nanosysteme -ENAS-, Chemnitz; Fraunhofer-Institut für Zuverlässigkeit und Mikrointegration -IZM-, Berlin:
Smart Systems Integration 2018. International Conference and Exhibition on Integration Issues of Miniaturized Systems : Dresden, Germany, 11 - 12 April 2018
Auerbach /Vogtl.: Verlag Wissenschaftliche Scripten, 2018
ISBN: 978-3-95735-082-4
ISBN: 3-95735-082-4
ISBN: 978-1-5108-6771-0 (Ausgabe bei Curran)
International Conference and Exhibition on Integration Issues of Miniaturized Systems <2018, Dresden>
Smart Systems Integration Conference (SSI) <2018, Dresden>
Fraunhofer IZM ()

A cost effective and reliable technology for the fabrication of micro batteries, based on batch-fabricated glass micro packages was developed and tested. Jet dispensing of conventional lithium-ion electrode material (anode, cathode, separator and carbon current collector) was investigated for the first time as a process for fabricating battery electrode arrays and separators and compared to micro dispense printing. Design of experiments was used to optimize the process parameters. The process shows a good reproducibility over the whole range of investigated materials and battery cell structures required for batteries of a size in the range of several millimetres edge length. Commercial graphite anode materials as well as layered nickel cathode materials for lithium-ion batteries were investigated for the fabrication of dispensable/jettable electrodes. The influence of the process parameters on the electrode lateral dimensions, thickness and reproducibility of the electr ode mass are presented in detail.