Effect of spray parameters on the microstructure of La1-xSr xMnO3 cathode prepared by spray pyrolysis

Hoda Amani Hamedani, Klaus Hermann Dahmen, Dongsheng Li, Hamid Garmestani

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

1 Citation (Scopus)

Abstract

Manufacturing high-performance cathodes requires optimization of conventional processing techniques to novel ones capable of controlling the microstructure. Spray pyrolysis is one of those promising techniques for tailoring microstructure of the electrodes for better performance of solid oxide fuel cells (SOFCs). This paper reports the effect of solvent and precursor type, deposition temperature and spray speed on morphology and compositional homogeneity of the lanthanum strontium manganite (LSM) cathode. Results show that metal-organic precursors and organic solvent create a homogeneous crack-free deposition as opposed to aqueous solution. By changing the temperature gradually from 540 to 580°C and spray speed from 0.73 to 1.58 ml/min, an appreciable trend was observed in amount of porosity in LSM cathode microstructure. It was shown that increasing the temperature and spray speed results in formation of more porous microstructure. The microstructure, morphology and the compositional homogeneity of the fabricated cathodes were characterized using SEM, EDS and XRD.

Original languageEnglish
Title of host publicationAdvances in Solid Oxide Fuel Cells IV - A Collection of Papers Presented at the 32nd International Conference on Advanced Ceramics and Composites
Pages139-146
Number of pages8
Edition5
Publication statusPublished - 27 Mar 2009
EventAdvances in Solid Oxide Fuel Cells IV - 32nd International Conference on Advanced Ceramics and Composites - Daytona Beach, FL, United States
Duration: 27 Jan 20081 Feb 2008

Publication series

NameCeramic Engineering and Science Proceedings
Number5
Volume29
ISSN (Print)0196-6219

Other

OtherAdvances in Solid Oxide Fuel Cells IV - 32nd International Conference on Advanced Ceramics and Composites
CountryUnited States
CityDaytona Beach, FL
Period27/1/081/2/08

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ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry

Cite this

Hamedani, H. A., Dahmen, K. H., Li, D., & Garmestani, H. (2009). Effect of spray parameters on the microstructure of La1-xSr xMnO3 cathode prepared by spray pyrolysis. In Advances in Solid Oxide Fuel Cells IV - A Collection of Papers Presented at the 32nd International Conference on Advanced Ceramics and Composites (5 ed., pp. 139-146). (Ceramic Engineering and Science Proceedings; Vol. 29, No. 5).