Microstructural evolution of YSZ electrolyte aerosol-deposited on porous NiO-YSZ |
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| Authors: | Jong-Jin Choi Joon-Hwan Choi Jungho Ryu Byung-Dong Hahn Jong-Woo Kim Cheol-Woo Ahn Woon-Ha Yoon Dong-Soo Park |
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| Affiliation: | 1. Lashkaryov Institute of Semiconductor Physics NAS of Ukraine, Kyiv, Ukraine;2. Frantsevich Institute of Materials Science Problems NAS of Ukraine, Kyiv, Ukraine;3. National Technical University of Ukraine “KPI”, Kyiv, Ukraine;4. Institute of Physics of CAS, Praha, Czech Republic |
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| Abstract: | Dense, crack-free, ～7.5 μm thick, 8 mol% yttria stabilized zirconia (YSZ) film was aerosol deposited on porous NiO-YSZ anode substrates at room temperature without additional high-temperature sintering. The films’ microstructures and gas permeability were observed after annealing at various temperatures. The dense, gas-tight film that was observed up to 1000 °C became porous at higher temperatures probably due to structural instability related to oxygen non-stoichiometry. A cell using such film as electrolyte showed an open cell voltage of 1.10 V and a maximum power density of 0.51 W/cm2 at 750 °C. |
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