M. Kleitz et al., ELECTRODE MATERIALS FOR ZIRCONIA SENSORS WORKING AT TEMPERATURES LOWER THAN 500-K, Sensors and actuators. B, Chemical, 13(1-3), 1993, pp. 27-30
With Bi2Ru2O7 and Bi3Ru3O11 as electrode materials, the zirconia senso
r can be used at a temperature as low as 450 K. Chemical gaseous pre-t
reatments, efficient over several weeks, significantly shorten the res
ponse times down to a few seconds.