Manufacturing method of solid oxide fuel cell, and manufacturing method of compact of divided member of the cell

A manufacturing method of a compact of a divided member of a solid oxide fuel cell in which at least a compact of a solid electrolyte is stacked on an upper surface of a compact of a support-member divided-member, which is obtained by dividing a plate-like support member having a gas channel formed therein in a thickness direction, and which has a channel pattern corresponding to the gas channel formed on its lower surface, the method comprising:

• a molding process in which ceramic slurry containing at least ceramic powder, dispersion media, and a gelling agent is injected to a molding die having a pattern corresponding to the channel pattern formed on a molding surface at its bottom wall, and the slurry is molded and hardened by gel casting to obtain the compact of the support-member divided-member, wherein the ceramic slurry contains powder of NiO and powder of YSZ as the ceramic powder, a median size of an NiO particle constituting the NiO powder is in a range from 0.1 to 5.0 μm, and a median size of a YSZ particle constituting the YSZ powder is in a range from 0.1 to 5.0 μm, and the gelling agent is a precursor of one of phenolic resin, urethane resin and acrylic resin;
• a stacking process in which at least a compact of a solid electrolyte is formed on the upper surface of the compact of the support-member divided-member in a state in which the upper surface of the compact of the support-member divided-member is exposed, and the compact of the support-member divided-member is accommodated in the molding die or a die that is different from the molding die having the pattern corresponding to the channel pattern formed on its bottom wall, in order to form a stacked compact;
• and
• a mold release process in which the molding die or the die different from the molding die is removed from the stacked compact to form the compact of the divided member of the solid oxide fuel cell.