Inkjet Printing of Geometrically Optimized Electrodes for Lithium-Ion Cells: A Concept for a Hybrid Process Chain

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Kolb, Cara G.
Mareddy, Harish R.
Guenter, Florian J.
Zaeh, Michael F.

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University of Texas at Austin


Lithium-ion batteries have proven to be reliable energy storage devices for portable and stationary electrical consumers because they possess a high energy and power density. Nevertheless, modern applications require more demanding performance characteristics. Electrodes with a structured surface design, which improves current densities and therefore enables faster charging and discharging, promise to reach the required cell characteristics. Conventionally, structured electrodes are produced by subtractive post-treatment, such as laser processing, which only allows structures of limited complexity. This paper demonstrates a novel approach using inkjet printing to produce electrodes with interlocked structures of high geometrical complexity. A concept for a hybrid process chain that combines the additive process with subtractive and further manufacturing technologies is presented. In addition, a selection of geometrically optimized electrodes is shown. This hybrid process chain has the potential to create functional electrodes by multi-material processing of liquid and powdery raw materials.


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