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 publicationCeramic Engineering and Science Proceedings
Pages139-146
Number of pages8
Volume29
Edition5
Publication statusPublished - 27 Mar 2009
Externally publishedYes
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

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

Fingerprint

Spray pyrolysis
Cathodes
Microstructure
Lanthanum
Strontium
Solid oxide fuel cells (SOFC)
Organic solvents
Temperature
Energy dispersive spectroscopy
Porosity
Metals
Cracks
Scanning electron microscopy
Electrodes
Processing

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 Ceramic Engineering and Science Proceedings (5 ed., Vol. 29, pp. 139-146)

Effect of spray parameters on the microstructure of La1-xSr xMnO3 cathode prepared by spray pyrolysis. / Hamedani, Hoda Amani; Dahmen, Klaus Hermann; Li, Dongsheng; Garmestani, Hamid.

Ceramic Engineering and Science Proceedings. Vol. 29 5. ed. 2009. p. 139-146.

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

Hamedani, HA, Dahmen, KH, Li, D & Garmestani, H 2009, Effect of spray parameters on the microstructure of La1-xSr xMnO3 cathode prepared by spray pyrolysis. in Ceramic Engineering and Science Proceedings. 5 edn, vol. 29, pp. 139-146, Advances in Solid Oxide Fuel Cells IV - 32nd International Conference on Advanced Ceramics and Composites, Daytona Beach, FL, United States, 27/1/08.
Hamedani HA, Dahmen KH, Li D, Garmestani H. Effect of spray parameters on the microstructure of La1-xSr xMnO3 cathode prepared by spray pyrolysis. In Ceramic Engineering and Science Proceedings. 5 ed. Vol. 29. 2009. p. 139-146
Hamedani, Hoda Amani ; Dahmen, Klaus Hermann ; Li, Dongsheng ; Garmestani, Hamid. / Effect of spray parameters on the microstructure of La1-xSr xMnO3 cathode prepared by spray pyrolysis. Ceramic Engineering and Science Proceedings. Vol. 29 5. ed. 2009. pp. 139-146
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