| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a fuel battery cell with imporved durability through prevention of reaction between a composition contained in a solid electrolyte and an oxygen side electrode during a long-lasting operation, and provide a fuel battery cell stack and a fuel battery using the above cell. <P>SOLUTION: The fuel battery cell 10 is provided with a Zr-containing solid electrolyte 9 on a surface of one side of which an intermediate layer 4 and an oxygen side electrode 1 are arranged in that order and on a surface of the other facing side of which a fuel side electrode 7 is arranged, and a surface layer region 4a of the intermediate layer 4 on a side of the electrolyte 9 contains Zr and other regions 4b than the surface layer region 4a do not contain Zr, and reaction between Zr and the oxygen-side electrode 1 can be prevented and deterioration of power generation of the fuel battery cell can be prevented. <P>COPYRIGHT: (C)2008,JPO&INPIT |
