Y 2O 3-stabilized ZrO 2 aerogels prepared from an epoxide assisted solgel synthesis for use in SOFC composite cathodes

Christopher N. Chervin, Hsiang Wei Chiu, Susan M. Kauzlarich, Brady J. Clapsaddle, Robert S. Glass, Joe H. Satcher

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The effect of Y 2C 3-stabilized ZrO 2 (YSZ) particle size on composite YSZ - (La 0.85Sr 0.15) 0.98MnO 3 (LSM) cathode microstructure and performance was examined. Two nanocrystalline YSZ powders were compared with different particle size and surface areas; a commercial powder with ∼100 nm particles and 11 m 2/g surface area and a synthesized YSZ powder with ∼10 nm particles and 124 m 2/g surface area. The LSM phase of the composite was the same in both systems. Anode supported single cells were fabricated and the electrochemical performances measured. The cathode microstructures for the high surface area YSZ composites were examined as a function of sintering temperature and compared to the lower surface area YSZ composite cathode sintered at 1150°C. The larger surface area YSZ was prepared using a novel epoxide initiated sol-gel synthesis, followed by aerogel processing. The aerogels were characterized with TEM, SEM, BET surface area analysis, and powder XRD.

Original languageEnglish (US)
Title of host publicationCeramic Engineering and Science Proceedings
EditorsN.P. Bansal
Pages49-56
Number of pages8
Volume26
Edition4
StatePublished - 2005
Event29th International Conference on Advanced Ceramics and Composites - Cocoa Beach, FL, United States
Duration: Jan 23 2005Jan 28 2005

Other

Other29th International Conference on Advanced Ceramics and Composites
CountryUnited States
CityCocoa Beach, FL
Period1/23/051/28/05

ASJC Scopus subject areas

  • Ceramics and Composites

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    Chervin, C. N., Chiu, H. W., Kauzlarich, S. M., Clapsaddle, B. J., Glass, R. S., & Satcher, J. H. (2005). Y 2O 3-stabilized ZrO 2 aerogels prepared from an epoxide assisted solgel synthesis for use in SOFC composite cathodes In N. P. Bansal (Ed.), Ceramic Engineering and Science Proceedings (4 ed., Vol. 26, pp. 49-56)