INDIVIDUAL SOLID OXIDE FUEL CELL AND MANUFACTURING METHOD AND MANUFACTURING APPARATUS FOR SAME

摘要

To provide a solid oxide fuel cell with improved durability while obtaining sufficient electricity generating performance. The present invention is a method for manufacturing solid oxide fuel cells (16) in which electricity generating elements (16a) are connected by an interconnector (102), including: a support body forming step (S1); surface deposition steps (S4, S9) for forming in sequence a first and second functional layer on a porous support body; an outermost layer deposition step (S13) for forming an outermost functional layer (101) in which slurry in liquid droplet form is continuously jetted to form dots, and an outermost functional layer is formed by the agglomeration of dots to be thicker than a first functional layer (98); and a sintering step (S14) for sintering functional layers; wherein in the outermost functional layer, traces of agglomerated dots remain and ring-shaped cracks surrounding each dot trace are formed by the sintering process.

主权项

1. A method for manufacturing a solid oxide fuel cell in which multiple electricity generating elements, including functional layers of a fuel electrode layer, an electrolyte layer, and an air electrode layer are formed on a porous support body, and the electricity generating elements are connected using an interconnector, the method comprising steps of:
a support body forming step for forming the porous support body; a film deposition step for forming, in sequence, a first functional layer and a second functional layer of the functional layers on the porous support body; an outermost layer deposition step for forming an outermost functional layer on the two functional layers formed in the film deposition step, in which dots of slurry are formed by continuously jetting liquid droplets of the slurry for making the outermost functional layer, and the outermost functional layer is formed by the agglomeration of the dots and is thicker than the first functional layer; and a sintering step for heating and sintering the functional layers; wherein in the outermost functional layer formed by the outermost layer deposition step, traces of the agglomerated dots are left, and ring-shaped cracks are formed around each of the dot traces by the sintering step.