Patent ID: 6287716
Filing Date: 2001-09-11
Classification: H01M,Y02E

Abstract:
A solid oxide fuel cell having a laminate structure, comprising:an air electrode layer;a fuel electrode layer;a solid electrolyte layer interposed between said air electrode layer and said fuel electrode layer; andan intermediate layer interposed between said electrolyte layer and said air electrode layer,wherein said electrolyte layer comprises a perovskite type oxide ion conductor material, said air electrode layer comprises a perovskite type electron conductor material, and said intermediate layer comprises a perovskite type electron and ion mixed conductor material,wherein a composition continuously changes in each of an interface between said intermediate layer and said electrolyte layer and an interface between said intermediate layer and said air electrode layer, andwherein said electrolyte layer, said air electrode layer, and said intermediate layer comprise at least one common identical metal element.