Solid oxide fuel cells with doped lanthanum gallate electrolyte and LaSrCoO{sub 3} cathode, and Ni-samaria-doped ceria cermet anode

Journal Article · Tue Jun 01 04:00:00 EDT 1999 · Journal of the Electrochemical Society

DOI:https://doi.org/10.1149/1.1391882· OSTI ID:680013

Maric, R; Ohara, Satoshi; Fukui, Takehisa ^[1]; Yoshida, Hiroyuki; Nishimura, Masayoshi; Inagaki, Toru ^[2]; Miura, Kazuhiro ^[3]

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1. Japan Fine Ceramics Center, Nagoya (Japan)
2. Kansai Electric Power Co., Inc., Hyogo (Japan)
3. Kanden Kakou Co., Ltd., Hyogo (Japan)

The electrode performance of a single solid-oxide fuel cell (SOFC) was evaluated using a 500 {micro}m thick La{sub 0.9}Sr{sub 0.1}Ga{sub 0.8}O{sub 0.3} (LSGM) as the electrolyte membrane. A doped lanthanum cobaltite, La{sub 0.6}Sr{sub 0.4}CoO{sub 3{minus}{delta}} was selected as the cathode material, and a samaria-doped ceria-NiO composite powder was used as the anode material. The spray-pyrolysis method was applied for synthesis of the starting powders of the cathode and anode. In this study, different microstructures of the cathode were obtained by varying the sintering temperature from 950 to 1200 C. High power density (the maximum power density of the cell was about 425 mW/cm{sup 2}, which is 95% of the theoretical value) of the solid oxide fuel cell at 800 C was achieved. The cell performance showed that, with a proper choice of electrode materials with optimized microstructure and LSGM as the electrolyte, a SOFC operating at temperatures T{sub op} {le} 800 is a realistic goal.

• OSTI ID: 680013
• Journal Information: Journal of the Electrochemical Society, Journal Name: Journal of the Electrochemical Society Journal Issue: 6 Vol. 146; ISSN 0013-4651; ISSN JESOAN
• Country of Publication: United States
• Language: English

Related Subjects

30 DIRECT ENERGY CONVERSION
CERIUM OXIDES
COBALT OXIDES
ELECTRODES
LANTHANUM OXIDES
MICROSTRUCTURE
NICKEL OXIDES
PERFORMANCE
SOLID ELECTROLYTE FUEL CELLS
STRONTIUM OXIDES
SYNTHESIS