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Potential New Solid Oxide Fuel Cell (SOFC) Anode Materials in the La‐Ca‐Cr‐Ti‐Ru‐O System
Author(s) -
Vashook V.,
Zosel J.,
Müller R.,
Shuk P.,
Vasylechko L.,
Ullmann H.,
Guth U.
Publication year - 2006
Publication title -
fuel cells
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.485
H-Index - 69
eISSN - 1615-6854
pISSN - 1615-6846
DOI - 10.1002/fuce.200500215
Subject(s) - anode , stoichiometry , electrochemistry , partial pressure , materials science , catalysis , oxygen , oxide , solid oxide fuel cell , conductivity , reducing atmosphere , inorganic chemistry , atmospheric temperature range , electrical resistivity and conductivity , fuel cells , analytical chemistry (journal) , chemical engineering , electrode , chemistry , metallurgy , organic chemistry , physics , electrical engineering , meteorology , engineering
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.
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