Thermoelectric power of YSZ

Phase relationships and transport in Ti-, Ce- and Zr-substituted lanthanum silicate systems

“…In particular, under oxidizing conditions the slope of the α versus ln p(O 2 ) dependencies is close to −R/4F, the theoretical value for pure oxygen-ionic conductors. 33 A similar behavior was reported earlier for other apatite-type systems. 10,13,22 Under reducing conditions, the behavior of Seebeck coefficient becomes more complex.…”

Half-Cell Potential Analysis of an Ammonia Sensor with the Electrochemical Cell Au | YSZ | Au, V2O5-WO3-TiO2

“…Up to now, we have only an assumption to explain the offset voltages. They may originate from the Seebeck coefficient of YSZ, which under these conditions is approximately 500 μV/K [28,29]. Hence, a small temperature difference between both electrodes of only a few K (for 5 K: 2.5 mV) might lead to such an additional voltage.…”

“…An offset voltage of 10 mV was determined for the Au, VWT electrode whereas a smaller offset (0 to −4 mV) was observed for Au and Pt. As explained before, the offset voltage could be explained by a temperature gradient over the half-cell probe resulting in a thermo-voltage due to the high Seebeck coefficient of YSZ [29]. A further small contribution (<1 mV) may stem from thermo-voltages of the lead materials.…”

Investigation of O2 reduction on Pt/YSZ by means of thin film microelectrodes: The geometry dependence of the electrode impedance

“…1a and Section 3.2.1) leads to a thermovoltage. On the one hand, the temperature gradient in the YSZ itself generates a voltage due to its thermoelectric power of ∼ 0.5 mV/K [60]. On the other hand, the different temperatures of the contact points (clamp/tip, tip/electrode or electrode/electrolyte) also contribute to a thermovoltage.…”