SOLID OXIDE TYPE FUEL BATTERY CELL AND SOLID OXIDE TYPE FUEL BATTERY

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PROBLEM TO BE SOLVED : To provide a solid oxide type fuel cell unit capable of restraining generation of warp and generating no exfoliation of an inter-connector and a fuel electrode despite repetition of temperature rise and fall between an operating temperature and a room temperature and retaining high output performance. SOLUTION : In the SOFC unit, the inter-connector has a lanthanum chromite perovskite type oxide as a principal component, and further, includes a Ti element and an Ni element. The fuel electrode has at least a first fuel electrode layer and a second fuel electrode layer. The first electrode layer lies between a solid electrolyte and the second fuel electrode layer. The first fuel electrode layer and the second fuel electrode layer include nickel and/or nickel oxide, and zirconia containing a rare-earth element as a solid-solution, and also include the Ti element, existing at least at an interface between the first fuel electrode layer and the second fuel electrode layer as well as between the first fuel electrode layer and the solid electrolyte. COPYRIGHT : (C)2008, JPO&INPIT