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Flame Spray Synthesis of Nanoscale La 0.6 Sr 0.4 Co 0.2 Fe 0.8 O 3–δ and Ba 0.5 Sr 0.5 Co 0.8 Fe 0.2 O 3–δ as Cathode Materials for Intermediate Temperature Solid Oxide Fuel Cells
Author(s) -
Heel A.,
Holtappels P.,
Hug P.,
Graule T.
Publication year - 2010
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.200900093
Subject(s) - thermogravimetric analysis , conductivity , electrical resistivity and conductivity , analytical chemistry (journal) , materials science , electrochemistry , carbonate , kinetic energy , mineralogy , nuclear chemistry , chemistry , electrode , metallurgy , environmental chemistry , physics , organic chemistry , quantum mechanics
Electrochemical performance and degradation was analysed by conductivity measurements as well as thermogravimetric analysis (TGA) under different atmospheres. CO 2 was identified as a critical parameter in terms of carbonate formation from Ba 0.5 Sr 0.5 Co 0.8 Fe 0.2 O 3–δ and causes a strong increase in the material resistivity, whereas La 0.6 Sr 0.4 Co 0.2 Fe 0.8 O 3–δ is unaffected. The oxygen exchange kinetic of both compositions is affected by CO 2 containing atmospheres.