Junichiro Mizusaki, Hiroaki Tagawa
Measurements were made on the electrochemical impedance spectra of the porous Pt/ySZ (8 m/o Y2O3-doped ZrO2) interface, as well as on the e.m.f. of the zirconia oxygen concentration cells in H2-H2O atmosphere at 200-800 °C. The results were compared with those in CO-CO2 and O2 atmospheres to clarify the characteristics of the response of zirconia sensors in H2-H2O atmosphere. Essential results are as follows: (1) The rate of electrode reaction in H2-H2O atmosphere is much faster than that in CO-CO2. At temperatures below 500 °C, the rate is even faster than that in O2 atmosphere. (2) The response and stability of the e.m.f. of zirconia sensors are better under the condition that the electrode reaction is faster. (3) The responses of A-type zirconia sensors for combustion exhaust gases are determined not by the CO-CO2 but by the H2-H2O components in the exhaust gas.
@article{f71814f3-e79c-438d-9011-77556d1c1067,
title={Response and electrode reaction of zirco},
author={Junichiro Mizusaki and Hiroaki Tagawa},
year={2026},
language={en}
}TY - JOUR TI - Response and electrode reaction of zirco AU - Junichiro Mizusaki AU - Hiroaki Tagawa PY - 2026 LA - en ER -
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