THE MANUFACTURING METHOD OF SOLID OXIDE FUEL CELL WITH CGO COATING LAYER

摘要

A solid oxide fuel cell with a germanium/gadolinium oxide coating layer is provided to suppress the reaction of a lanthanium/strontium/cobalt/iron oxide electrode and yttria-stabilized zirconia electrolyte without reaction with a yttria-stabilized zirconia layer. A method for manufacturing a solid oxide fuel cell with a germanium/gadolinium oxide coating layer comprises the steps of: forming a fuel electrode supporter made of NiO, yttria-stabilized zirconia and activated carbon; dipping coating a fuel electrode functional layer on the surface of the fuel electrode supporter and then calcining it at 1000 °C for 3 hours; forming a yttria-stabilized zirconia coating layer on the surface of the fuel electrode supporter by using a vacuum slurry coating method and calcining it at 1080 °C for 3 hours; forming a germanium/gadolinium oxide coating layer on the supporter coated with yttria-stabilized zirconia by using the vacuum slurry coating method; co-sintering the yttria-stabilized zirconia and germanium/gadolinium oxide coating layer at 1350 °C for 5 hours; and coating a lanthanium/strontium/cobalt/iron oxide air electrode on the surface of the yttria-stabilized zirconia and germanium/gadolinium oxide coating layer, and calcining the coated air electrode at 1200 °C.