Potential New Solid Oxide Fuel Cell (SOFC) Anode Materials in the La-Ca-Cr-Ti-Ru-O System

✍ Scribed by V. Vashook; J. Zosel; R. Müller; P. Shuk; L. Vasylechko; H. Ullmann; U. Guth

• Book ID: 102214226
• Publisher: John Wiley and Sons
• Year: 2006
• Tongue: English
• Weight: 471 KB
• Volume: 6
• Category: Article
• ISSN: 1615-6846
• DOI: 10.1002/fuce.200500215

✦ Synopsis

Abstract

Six single phase La~1–x~Ca~x~Cr~1–y~Ti~y–γ~Ru~γ~O~3–δ~ (x = 0.1, 0.2, y = 1.0, 0.8 and γ = 0.0, 0.1, 0.2) compositions are prepared by solid state reaction. Oxygen non‐stoichiometry, electrical conductivity, catalytic activity, and electrochemical efficiency of these compositions is investigated over a wide temperature and oxygen partial pressure range. The compositions with the highest electrical conductivity (50 S cm^–1^) at reducing conditions and highest catalytic activity for the oxidation of hydrocarbons are found. A combination of highly conductive La~1–x~Ca~x~TiO~3–δ~ in a reducing atmosphere and an intermediate functional film of catalytically active La~0.1~Ca~0.9~Ti~1–x~Ru~x~O~3–δ~ for the oxidation of hydrocarbons could potentially be very useful in a multilayer SOFC anode.