Patent ID: 8993194
Filing Date: 2015-03-31
Classification: H01M,Y02E,Y02P

Abstract:
1. A fuel cell, comprising: a solid electrolyte layer containing Zr; an intermediate layer containing CeO an air electrode layer containing Sr, the intermediate layer and the air electrode layer being stacked in this order on one surface of the solid electrolyte layer; and a fuel electrode layer on another surface of the solid electrolyte layer which is opposite to the one surface, wherein a value obtained by dividing a molar content of the rare-earth element excluding Ce by a molar content of Zr is equal to or less than 0.05 at a site of the solid electrolyte layer which is 1 μm away from an interface between the solid electrolyte layer and the intermediate layer, and wherein a value obtained by dividing a molar content of the rare-earth element excluding Ce by a molar content of Zr at a site of the solid electrolyte layer which is 0.5 μm away from the interface is greater than the value obtained by dividing the molar content of the rare-earth element excluding Ce by the molar content of Zr at the site of the solid electrolyte layer which is 1 μm away from the interface.