Operating Properties of Solid Oxide Fuel Cells Using BaCe0.8Gd0.2 O 3 − α Electrolyte

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Abstract
The performance and the long‐term operating properties of solid oxide fuel cells (SOFCs) using (BCG) ceramics as the electrolyte have been investigated. A hydrogen‐air fuel cell using BCG electrolyte with a thickness of 0.5 mm exhibited good performance at 800°C . Its short‐circuit current was , and there was hardly any degradation of BCG electrolyte in 1600 h of operation. When a quasi‐fuel gas containing 8% , which was expected by the reformation of the city gas at 800°C, was supplied to this cell, its short‐circuit current was and the cell worked stably under the discharge current density of for 2500 h. 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.

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