Central project

Manufacture of technical gas-diffusion electrodes

On the basis of commercially available silver powders with high purity and different shape or particle size, “technical” gas-diffusion electrodes (GDE) are produced for all project partners. With an established spraying process, electrodes of different thicknesses - self-supporting or on current collectors - can be manufactured. The wettability of the electrodes is influenced by varying the Ag / PTFE ratio in the suspension to be sprayed. These electrodes are required for the experimental work in the different subprojects. The porous GDE are physico-chemically characterized with various methods. This includes in particular the determination of the pore volume and the pore size distribution by means of physisorption, pycnometry, Hg porosimetry and porometry. As a result, volume-averaged detailed information on the pore system of the electrodes is available, which is supplemented by further ex-situ investigations. In addition, contact angle measurements provide information on the wettability with the electrolyte.


Clausthal University of Technology
Institute of Chemical and Electrochemical Process Engineering
Leibnizstraße 17
Building C16
38678 Clausthal-Zellerfeld

Fax: +49 5323 72-2181



Prof. Dr.-Ing. Thomas Turek
Phone: +49 5323 72-2184
E-Mail: turek@icvt.tu-clausthal.de

Dr. Barbara Ellendorff
Phone: +49 5323 72-2181
E-Mail: ellendorff@icvt.tu-clausthal.de