SOLID OXIDE FUEL CELL HAVING HEAT RESISTIVE ALLOY-MADE INTERCONNECTOR, AND ITS OPERATION METHOD

摘要

PROBLEM TO BE SOLVED: To provide a solid oxide fuel cell stably operable in a long period and having as a constituting material a heat resistive alloy-made interconnector containing chromium; and to provide its operation method.

SOLUTION: The operation method of the solid oxide fuel cell using a heat resistive alloy containing chromium as the interconnector comprises a step of raising the temperature at the starting time while an oxidizing gas is made to flow to the cathode in the open circuit state, and thereafter holding in a temperature range of 650 to 850°C at least for 30 hours while the oxidizing gas is made to flow to the cathode side successively in the open circuit state.

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