| 摘要 |
PROBLEM TO BE SOLVED: To suppress the proceeding of sintering of Ni particles which compose a fuel electrode during operation of a cell and make a solid electrolyte film dense by filling and covering the space between the surface of fuel electrode composing particles and a joining face of a solid electrolyte with a fixing agent by impregnation with the agent. SOLUTION: From the surface side to a solid electrolyte 3 side, a fuel electrode is impregnated with a slurry fixing agent containing a fine power of at least one oxide of Zr, Y, Mg, and C, which is a composing element of an electrolyte. Consequently, the fixing agent is stuck to and cover the gaps between the surface of Ni particles 41 and of yttria-stabilized zirconia(YSZ) particles 42, which are a fuel electrode composing elements, and the joining face of the electrolyte film 3, and at the same time air-through holes 31 of the film 3 are filled with the agent and after that, the resultant body is dried and sintered. By this method, sintering among Ni particles composing the fuel electrode during operation of a cell can be suppressed and the solid electrolyte film becomes dense, so that a fuel cell in which deterioration of the electricity generating function with the lapse of time can be prevented and initial efficiency can last for a long period. |
