Powder prepared by spray pyrolysis as an electrode material for solid oxide fuel cells |
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| Authors: | R Maric T Fukui S Ohara H Yoshida M Nishimura T Inagaki and K Miura |
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| Affiliation: | (1) Japan Fine Ceramics Center, 2-4-1, Mutsuno, Atsuta-ku, Nagoya, 456-8587, Japan;(2) Japan Fine Ceramics Center, 2-4-1, Mutsuno, Atsuta-ku, Nagoya, 456-8587, Japan;(3) Technical Research Center, The Kansai Electric Power Company, Inc, 11-20 Nakoji 3-chome Amagasaki, Hyogo, 661-0974, Japan;(4) Kanden Kako Co. Ltd., Showa-dori, Amagasaki, Hyogo, 606-0881, Japan |
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| Abstract: | A variety of spray pyrolysis (SP) techniques have been developed to directly produce ceramic powders from solutions. Examples that are discussed include the following powders: (La0.8Sr0.2)0.9MnO3-YSZ (La(Sr)MnO3-YSZ), La0.6Sr0.4CoO3 (La(Sr)CoO3), (CeO2)0.8(SmO1.5)0.2-NiO (SDC-NiO) and La0.9Sr0.1Ga0.8Mg0.2O3-NiO (LSGM-NiO). For all these powders, spherical, non-agglomerated, submicrometer particles were obtained from aqueous solution of metal salts into a furnace using an ultrasonic atomizer at 1.7 MHz. After SP some of the particles exhibit a hollow-shell morphology. Subsequent calcination at 1000°C yielded crystalline particles. The electrical performance of Ni-SDC/LSGM/La(Sr)CoO3 fuel cells operating at 800°C, prepared from the powders obtained by SP, is reported. |
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