Abstract
Screen printing pastes based on organic binder systems were developed for the production of dense electrolyte layers of Y 0.16Zr 0.84O 1.92(8YSZ) on Ni/YSZ anode substrates for anode supported solid oxide fuel cells (SOFCs). Pastes with a solid loading up to 50 vol.% (86 wt.%) of YSZ powder and the adequate thixotropic behaviour for screen printing could be produced. Dense layers were obtained by sintering at 1430 °C and were shown to be gas tight by window and He leakage test. The electrical conductivity of the dense layers and the resulting activation energy (96–99 kJ mol −1) were obtained from impedance spectra in the temperature range from 250 °C to 900 °C. The agreement with literature values indicates that performing layers have been obtained.
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