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High temperature electrode reactions of Sr and Mg doped LaGaO3 perovskite

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Abstract

High-temperature phase reactions of Sr and Mg doped LaGaO3 (LSGM) electrolyte with many electrode materials including Ag, Au, Pt, Sm doped CeO2 (CSO), Sr doped LaMnO3 (LSM), and Sm doped SrCoO3 (SSCO) were investigated systematically by solid-state reaction and X-ray diffraction (XRD) analysis. Phase change and formation of minor phases were observed as a function of temperature. Single cells of LSGM electrolyte coupling with different electrode materials have been fabricated and tested by in situ ac impedance and IV curve measurement. The performance of single LSGM button cells was relative poor due to the occurrence of detrimental interfacial reactions.

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Acknowledgements

Partial work was conducted in Materials Sciences Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, 62R0203, Berkeley, CA 94720, supported by the US Department of Energy under Contract no. DE-AC03-76SF00098. Special thanks are due to Dr. Steve Visco and Professor Lutgard DeJonghe for offering one of the authors (F. Zheng) the valuable opportunity and privilege to work in their labs.

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  1. School of Materials Science and Engineering, Central South University, Changsha, Hunan, 410083, China

    Feng Zheng & Yu Chen

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  1. Feng Zheng
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  2. Yu Chen
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Correspondence to Feng Zheng.

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Zheng, F., Chen, Y. High temperature electrode reactions of Sr and Mg doped LaGaO3 perovskite. J Mater Sci 43, 2058–2065 (2008). https://doi.org/10.1007/s10853-007-2423-y

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  • DOI: https://doi.org/10.1007/s10853-007-2423-y

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