Patent ID: 7851103
Filing Date: 2010-12-14
Classification: H01M,Y02E,Y02P

Abstract:
1. A solid oxide fuel cell comprising a solid electrolyte layer between a fuel electrode and an air electrode, one of said fuel electrode and said air electrode functioning as a support, said solid electrolyte layer provided at least with a first layer and a second layer from the side of said support, said first layer comprising a cerium-containing oxide represented by a general formula Ce 1-x Ln x O 2 in which Ln is one or more kinds of La, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Sc and Y and the value of x is 0.30<x<0.50, and said second layer comprising a lanthanum-gallate oxide containing at least lanthanum and gallium, wherein said first layer contains a sintering assistant for improving sintering property of said cerium-containing oxide, wherein when the thickness of said second layer is T μm, the value of T is 2<T<70, and wherein said sintering assistant contained in said first layer contains Ga element or B element.