SOFC anode performance enhancement through precipitation of nanoscale catalysts

B. D. Madsen, W. Kobsiriphat, Y. Wang, L. D. Marks, S. A. Barnett

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

32 Scopus citations

Abstract

This paper describes a new method for improving the performance of oxide anodes by precipitating metal nano-clusters on oxide surfaces during the initial stages of SOFC operation, without additional processing steps. Transmission electron microscope and x-ray photoelectron spectroscopy observations showed that nanoclusters of Ni or Ru metal precipitated onto lanthanum chromite (La0 8Sr0 2Cr1-yXyO 3 δ,X = Ni, Ru) surfaces, respectively, after exposure to hydrogen at 800°C. While Ni nano-clusters coarsened over ∼300 h at 800°C, Ru nano-cluster size was stable at ≤ 5 nm. SOFC tests were done with the doped lanthanum chromite anodes on LSGM electrolyte-supported cells. Ru and Ni nano-cluster nucleation improved cell performance and reduced anode polarization resistance during the first 50-100 h of cell operation.

Original languageEnglish (US)
Title of host publicationECS Transactions - 10th International Symposium on Solid Oxide Fuel Cells, SOFC-X
Pages1339-1348
Number of pages10
Edition1 PART 2
DOIs
StatePublished - Dec 1 2007
Event10th International Symposium on Solid Oxide Fuel Cells, SOFC-X - , Japan
Duration: Jun 3 2007Jun 8 2007

Publication series

NameECS Transactions
Number1 PART 2
Volume7
ISSN (Print)1938-5862
ISSN (Electronic)1938-6737

Other

Other10th International Symposium on Solid Oxide Fuel Cells, SOFC-X
CountryJapan
Period6/3/076/8/07

ASJC Scopus subject areas

  • Engineering(all)

Fingerprint Dive into the research topics of 'SOFC anode performance enhancement through precipitation of nanoscale catalysts'. Together they form a unique fingerprint.

Cite this