Ceramic-based thermoelectric generator processed via spray-coating and laser structuring
Mario Wolf,
Marvin Abt,
Gerd Hoffmann,
Ludger Overmeyer,
Armin Feldhoff
Affiliations
Mario Wolf
Institute of Physical Chemistry and Electrochemistry, Leibniz University Hannover, Callinstraße 3A, D-30167, Hannover, Germany; Corresponding author.
Marvin Abt
Institute for Integrated Production Hannover, Hollerithallee 6, D-30419, Hannover, Germany; Corresponding author.
Gerd Hoffmann
Institute of Transport and Automation Technology, An der Universität 2, D-30823, Garbsen, Germany
Ludger Overmeyer
Institute for Integrated Production Hannover, Hollerithallee 6, D-30419, Hannover, Germany; Institute of Transport and Automation Technology, An der Universität 2, D-30823, Garbsen, Germany
Armin Feldhoff
Institute of Physical Chemistry and Electrochemistry, Leibniz University Hannover, Callinstraße 3A, D-30167, Hannover, Germany; Corresponding author.
Processing technology to improve the manufacturing of thermoelectric generators (TEGs) is a growing field of research. In this paper, an adaptable and scalable process comprising spray-coating and laser structuring for fast and easy TEG manufacturing is presented. The developed process combines additive and subtractive processing technology towards an adaptable ceramic-based TEG, which is applicable at high temperatures and shows a high optimization potential. As a prototype, a TEG based on Ca3Co4O9 (CCO) and Ag on a ceramic substrate was prepared. Microstructural and thermoelectric characterization is shown, reaching up to 1.65 μW cm−2 at 673 K and a ΔT of 100 K. The high controllability of the developed process also enables adaptation for different kinds of thermoelectric materials.
