Anode and cathode polarization were measured in a yttria-stabilized zirconia solid electrolyte cell with sputtered platinum electrodes operated at 980-degrees-C in air. Competing electrode reactions associated with the presence of the "three-phase boundary" (air/electrode/electrolyte) found in typical cells were eliminated by the use of non-porous electrodes and a glass coating applied to the sides of the sample. Use of a cylindrical sample, with reference electrodes along its length, allowed the contribution of ionic resistance to be subtracted from total cell voltage. A time decay method was used to measure concentration gradient-induced potential. Data indicate that oxygen transport through the thin (< 1 mum) non-porous sputtered platinum electrodes is rapid enough to support a current density of at least 500 mA/cm2. At current densities up to 500 mA/cm2, no activation polarization was noted at either electrode’s interface, provided the end surfaces of the zirconia had been properly prepared before sputtering. Measurements of ionic resistivity obtained ranged from 6.9 to 8.1 OMEGA cm at 980-degrees-C.