Emulsion processing of SOFC materials Ca_(0.3)La_(0.7)CrO_(3), Sr_(0.16)La_(0.84)CrO_(3), and Sr_(0.2)La_(0.8)MnO_(3)

摘要

A novel preparation route to the perovskite materials Ca_(0.3)La_(0.7)CrO_(3), Sr_(0.16)La_(0.84)CrO_(3), and Sr_(0.2)La_(0.8)MnO_(3) is described. The method produces the phase pure perovskite phases after calcination at 700℃ for 2 hours. The powders produced are unagglomerated, and consist of hollow spherical particles 0.15 μm in diameter. EDX has shown that the careful control of reaction conditions is vital to control the phase composition, and that small changes in stoichiometry result in the production of unsinterable powder.