Preparation of Stabilized Zirconia Electrolyte Films by Vacuum Evaporation

Michibata, Hideo; Namikawa, T.; Yamazaki, Yohtaro

doi:10.5796/kogyobutsurikagaku.58.1070

Cited by 2 publications

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“…1,2 In the 1980s, nickel supported thin zirconia cells fabricated by vacuum evaporation and back-etch were reported to be operational at 500-700°C. [3][4][5] However, it was not until the 1990s that a couple of research organizations developed metal supported SOFCs with reasonable cell characteristics. [6][7][8][9] The metal support structure using a ferritic stainless steel material allowed for enhancement of the mechanical strength of cells, improving the redox stability of cell stacks and minimizing the usage of costly electrode and electrolyte materials.…”

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Evaluation of Metal Supported Ceria Based Solid Oxide Fuel Cell Fabricated by Wet Powder Spray and Sintering

Oishi

Yoo

2010

J. Electrochem. Soc.

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A ceria based solid oxide fuel cell was fabricated onto a porous stainless steel support by sintering process. The metal supported cell was composed of a porous AISI430 support, a Ni–Ce0.8normalY0.2normalO1.9 anode, a Ce0.9Gd0.1normalO1.95 electrolyte, and a La0.6Sr0.4Co0.2Fe0.8normalO3 cathode. A cell was tested at 600°C for up to 2700 h on humidified argon balanced hydrogen and air. The cell showed no signs of degradation over 1200 h at low current densities of 0.16 and 0.24Acm−2 ; however, under a high current density of 0.32Acm−2 , the cell voltage dropped by 25% in 1400 h. Impedance measurements showed a sharp increase in polarization resistance that could be associated with the cathode. Ohmic resistances from the oxide scale and electrodes did not significantly contribute to the overall resistance, while electrode polarization resistance accounted for more than half of the overall resistance.

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