Operating properties of SOFCs using BaCe{sub 0.8}Gd{sub 0.2}O{sub 3{minus}{alpha}} electrolyte

Book · Sun Dec 31 04:00:00 EST 1995

OSTI ID:242490

Taniguchi, Noboru; Yasumoto, Eiichi; Gamo, Takaharu ^[1]

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1. Matsushita Electric Industry Co. Ltd., Osaka (Japan)

The performances and the long term operating properties of SOFCs using BaCe{sub 0.8}Gd{sub 0.2}O{sub 3 {minus}{alpha}} (BCG) ceramics as the electrolyte have been investigated. A hydrogen-air fuel cell using BCG electrolyte with a thickness of 0.5mm exhibited good performance at 800 C. Its short-circuit current was 0.9A/cm{sup 2} and there was hardly any degradation of BCG electrolyte in 1600 hours of operation. When the quasi-fuel gas containing 8% CO{sub 2}, which was expected by the reformation of the city gas(CH{sub 4}) at 800 C, was supplied to this cell, its short-circuit currents showed 0.63A/cm{sup 2} and the cell worked stably under the discharge current density of 100mA/cm{sup 2} for 2500 hours. Some sintered metals (Fe,Co,Ni) were examined as a anode material for this electrolyte. Ni is a promising anode material for BCG electrolyte from the point of view of performance and durability.

• OSTI ID: 242490
• Report Number(s): CONF-950683--; ISBN 1-56677-095-5
• Country of Publication: United States
• Language: English

Related Subjects

30 DIRECT ENERGY CONVERSION
36 MATERIALS SCIENCE
BARIUM OXIDES
CERIUM OXIDES
CURRENT DENSITY
ELECTRIC POTENTIAL
ELECTROMOTIVE FORCE
EXPERIMENTAL DATA
GADOLINIUM OXIDES
HYDROGEN FUEL CELLS
IONIC CONDUCTIVITY
MATERIALS TESTING
NATURAL GAS FUEL CELLS
PERFORMANCE
SOLID ELECTROLYTE FUEL CELLS
SOLID ELECTROLYTES