Journal
SOLID STATE IONICS
Volume 196, Issue 1, Pages 65-72Publisher
ELSEVIER
DOI: 10.1016/j.ssi.2011.06.013
Keywords
Perovskite nanoparticles; Reverse micelle synthesis; Oxygen surface exchange electrocatalyst; LaxSr1-xCoyFe1-yO3-delta (LSCF); Solid oxide fuel cell (SOFC)
Categories
Funding
- National Science Foundation [CBET-0643931]
- University of Virginia
- US Air Force Civilian Institution
- Directorate For Engineering
- Div Of Chem, Bioeng, Env, & Transp Sys [1101814] Funding Source: National Science Foundation
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La0.6Sr0.4CoxFe1-xO3-delta (LSCF). La0.6Sr0.4Cu0.2Fe0.8O3-delta, Ba(0.5)Sr0.4Co(0.8)Fe(0.2)O(3-delta) and LaFeO3-delta nanoparticles were synthesized by a reverse micelle procedure. Controlling the size of the micelles through the water:oil phase ratio enabled synthesis of phase pure perovskite particles with average sizes from 14 nm to 50 nm. Small amounts of an impurity phase, likely cobalt oxide, were detected in the XRD spectrum of high cobalt content samples of LSCF (x = 0.8). La0.6Sr0.4Co0.2Fe0.8O3-delta nanoparticles were utilized to coat the surface of a dense thin-film La0.6Sr0.4Co0.2Fe0.8O3-delta solid oxide fuel cell cathode. The polarization resistance of the nanoparticle coated electrode, measured at open circuit in air at 973 K, was 20% lower than an equivalent un-coated electrode. (C) 2011 Published by Elsevier B.V.
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