Low-temperature sintering of lanthanum strontium manganite-based contact pastes for SOFCs

B. P. McCarthy, L. R. Pederson, Y. S. Chou, X. D. Zhou, W. A. Surdoval, L. C. Wilson

Research output: Contribution to journalArticle

35 Citations (Scopus)

Abstract

Electrical contact pastes of composition (La0.90Sr0.10)0.98MnO3 + δ (LSM-10) formed strong bonds (∼3 MPa) to (Co,Mn)3O4 spinel-coated Crofer 22 APU ferritic steel coupons when exposed to alternating flows of air and nitrogen (10 ppm O2) at 900 °C for 2 h or longer. When held at 900 °C in air only, bond strengths were negligible. Substantial bonds could also be created between LSM-10 contact paste and (La0.80Sr0.20)0.98MnO3 + δ (LSM-20) porous cathodes by processing in alternating air and nitrogen, without simultaneous densification of the cathode. Enhanced sintering of LSM-10 is attributed to transients in the defect structure induced by oxygen partial pressure changes.

Original languageEnglish
Pages (from-to)294-300
Number of pages7
JournalJournal of Power Sources
Volume180
Issue number1
DOIs
Publication statusPublished - 15 May 2008
Externally publishedYes

Fingerprint

Lanthanum
Strontium
Ointments
Solid oxide fuel cells (SOFC)
lanthanum
strontium
sintering
Sintering
air
Cathodes
Nitrogen
Air
cathodes
nitrogen
Defect structures
Ferritic steel
densification
Densification
Partial pressure
Temperature

Keywords

  • Contact paste
  • Enhanced shrinkage
  • Lanthanum strontium manganite
  • Oxygen partial pressure cycling
  • Sintering
  • Solid oxide fuel cell

ASJC Scopus subject areas

  • Electrochemistry
  • Fuel Technology
  • Materials Chemistry
  • Energy (miscellaneous)

Cite this

McCarthy, B. P., Pederson, L. R., Chou, Y. S., Zhou, X. D., Surdoval, W. A., & Wilson, L. C. (2008). Low-temperature sintering of lanthanum strontium manganite-based contact pastes for SOFCs. Journal of Power Sources, 180(1), 294-300. https://doi.org/10.1016/j.jpowsour.2008.01.097

Low-temperature sintering of lanthanum strontium manganite-based contact pastes for SOFCs. / McCarthy, B. P.; Pederson, L. R.; Chou, Y. S.; Zhou, X. D.; Surdoval, W. A.; Wilson, L. C.

In: Journal of Power Sources, Vol. 180, No. 1, 15.05.2008, p. 294-300.

Research output: Contribution to journalArticle

McCarthy, BP, Pederson, LR, Chou, YS, Zhou, XD, Surdoval, WA & Wilson, LC 2008, 'Low-temperature sintering of lanthanum strontium manganite-based contact pastes for SOFCs', Journal of Power Sources, vol. 180, no. 1, pp. 294-300. https://doi.org/10.1016/j.jpowsour.2008.01.097
McCarthy, B. P. ; Pederson, L. R. ; Chou, Y. S. ; Zhou, X. D. ; Surdoval, W. A. ; Wilson, L. C. / Low-temperature sintering of lanthanum strontium manganite-based contact pastes for SOFCs. In: Journal of Power Sources. 2008 ; Vol. 180, No. 1. pp. 294-300.
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