Abstract
The properties of various proton conducting solid electrolytes were investigated by electrochemical galvanic cell and ac impedance type measurements for applications as high temperature (T>200°C) humidity sensors. The basic characteristics of proton conductors required for humidity sensing are reviewed. Results of ionic conductivity and EMF measurements and their implications for the mechanism of ion transport are discussed for two prototype ceramic humidity sensors: β-Ca(PO3)2 and a NASICON-type ceramic composite, HZr2P3O12/ZrP2O7.
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Acknowledgments
I would like to acknowledge the many contributions of my co-workers, Drs. S. Tanase, P.-P. Tsai, E. Wang, B. Wang and K.V. Ramanujachary; without their efforts this paper would not have been possible. This is publication No. D10552-10-91 of the New Jersey Agricultural Experiment Station supported by State Funds and the Center for Advanced Food Technology (CAFT). CAFT is a New Jersey Commission on Science and Technology Center.
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Greenblatt, M., Feng, S. Proton Conducting Solid Electrolytes for High Temperature Humidity Sensing. MRS Online Proceedings Library 293, 283–294 (1992). https://doi.org/10.1557/PROC-293-283
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DOI: https://doi.org/10.1557/PROC-293-283