Fabrication of directly deposited composite membranes for fuel cells (RePEM)

The catalyst coated membrane is replaced by two catalyst layers with a directly deposited membrane: this allows very thin membranes and improves the contact between membrane and catalyst layer.

Combination of inkjet-printing and electro-spinning for the fabrication of novel composite membrane structures for high performance fuel cells: By the use of additive manufacturing techniques such as 3D inkjet-printing, the fabrication of fuel cell membranes is strongly simplified in the project „RePEM“. Instead of using a membrane foil, anode and cathode electrodes are coated with membrane ionomer, resulting in a highly proton-conductive and robust fuel cell membrane. By combining inkjet-printing and electro-spinning new additive composite structures can be designed, which was not possible to date with conventional foil processing.
The project is a cooperation of ICVT Stuttgart and the Department of Microsystems Engineering (IMTEK) of the University of Freiburg. ICVT produces novel ionomers for the fuel cell membranes, which are used by Hahn-Schickard for the inkjet-printing process. IMTEK develops an electrospinning process to deliver the required reinforcement for the composite membrane. Hahn-Schickard performs final fuel cell testing of the novel composite membranes.

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Sponsor: Baden-Württemberg Stiftung
Promoter: VDI Technologiezenturm GmbH
Funding Number: BaWü-Stiftung, Clean Tech, CT-1
Duration: 01.05.2015 to 30.04.2017
Cooperation Partner: Department of Microsystems Engineering – IMTEK of the University of Freiburg, Institute of Chemical Process Engineering (ICVT) of the University of Stuttgart
Maturity Level: Research


Dr. Simon Thiele
Phone: +49 761 203-95085