Printed batteries are not new. Pioneers started this development more than 20 years ago. But it has taken this long period of time to develop the batteries to their current state, the threshold to mass production. Today, there are many possible applications for these thin-film batteries, e.g. for the operation of autonomous sensors, IOT, etc. These thin-film batteries are structures with several layers printed on top of each other, which contain an electrolyte. The big advantage of these thin-film batteries compared to button cells is the design freedom and mechanical flexibility. Each layer and the substrates present technical challenges that need to be overcome. Especially when the printed batteries are used in wearables such as skin patches, they must remain functional during bending movements and be perfectly sealed to prevent electrolyte leakage. This requires substrates with sufficient barrier properties to keep the electrolyte moist inside the flexible pouch.

Since 1999 Prof. Hübner has been teaching printing technologies at the Stuttgart Media University (HdM) with a focus on screen, digital and functional printing. His research group is called the "Institute for Innovative Applications of Printing Technologies" (IAD). The research focuses on screen printing of non-rechargeable and rechargeable thin-film batteries and printed sensors. Previously, printed antennas for automotive applications were successfully developed.

Before joining the HdM, he worked in industry for around 11 years at AGFA Gevaert AG and DuPont de Nemours GmbH.

Other links:

www.hdm-stuttgart.de/
www.hdm-stuttgart.de/iad