A series of anode-supported SOFCs were tested at 800 °C. The only parameter that was changed was the thickness of the electrolyte. Data for the cell resistance measured with current interruption are shown in the table. Determine the conductivity of the YSZ electrolyte and the fraction of the resistance that can be ascribed to the interlayers, current collectors, and contact resistances combined. 

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Thickness [um] Resistance (2 cm') 0.100 0.105 0.120 14 20 0.140 Thickness [um] Resistance (2 cm') 0.100 0.105 0.120 14 20 0.140