Proton conducting perovskite-type ceramics for fiber optic sensors for hydrogen monitoring at high temperature

Xiling Tang; Kurtis Remmel; Daniel Sandker; Zhi Xu; Junhang Dong

doi:10.1117/12.850919

28 April 2010 Proton conducting perovskite-type ceramics for fiber optic sensors for hydrogen monitoring at high temperature

Xiling Tang, Kurtis Remmel, Daniel Sandker, Zhi Xu, Junhang Dong

Author Affiliations +

Proceedings Volume 7682, Photonic Microdevices/Microstructures for Sensing II; 76820L (2010) https://doi.org/10.1117/12.850919
Event: SPIE Defense, Security, and Sensing, 2010, Orlando, Florida, United States

Abstract

A fiber optical sensor has been developed by coating proton conducting perovskite oxide (Sr(Ce_0.8Zr_0.1)Y_0.1O_2.95, SCZY) thin film on the long-period fiber grating (LPFG) for high temperature in situ measurement of bulk hydrogen in gas mixtures relevant to the fossil- and biomass-derived syngas. In this paper, we investigate in the H₂-sensing mechanism of the SCZY-LPFG sensor. The high temperature H₂ adsorbance in the SCZY, the SCZY electric conductivity in H₂, and the resonant wavelength shift of the SCZY-LPFG (Δλ_R,H2) have been experimentally studied to understand the effect of operation temperature on the sensor's sensitivity to H₂. Because of the activation process of the H₂ reaction with the perovskite oxide, increasing temperature benefits the H₂ uptake in the SCZY phase and the sensitivity of the SCZY-LPFG sensor. However, the thermal stability of the LPFG and the microstructure of the SCZY nanocrystalline film limit the application temperature of the fiber optic sensor.

Citation Download Citation

Xiling Tang, Kurtis Remmel, Daniel Sandker, Zhi Xu, and Junhang Dong "Proton conducting perovskite-type ceramics for fiber optic sensors for hydrogen monitoring at high temperature", Proc. SPIE 7682, Photonic Microdevices/Microstructures for Sensing II, 76820L (28 April 2010); https://doi.org/10.1117/12.850919

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