Patent ID: 7622214

Claim:
A solid oxide fuel cell comprising an electrolyte electrode assembly and a pair of separators sandwiching said electrolyte electrode assembly, said electrolyte electrode assembly including an anode, a cathode, and an electrolyte interposed between said anode and said cathode, wherein a fuel gas is supplied outwardly from a central region to a terminal end of said anode and an oxygen-containing gas is supplied to said cathode; an exhaust gas including fuel gas and oxygen-containing gas after reaction is discharged outwardly from said electrolyte electrode assembly; and said anode includes a first portion made of a porous material and a second denser portion made of the same porous material, the second denser portion covers an entire surface of the terminal end of the first portion of said anode, wherein said second denser portion is formed integrally on said entire surface of the terminal end of the first portion of said anode, wherein the terminal end of the first portion of the anode is perpendicular to a portion of the anode contacting the electrolyte.