초록 ▼

The present invention provides a solid electrolyte type of fuel cell of a planar type structure comprising a plurality of solid electrolyte plates, each being in the form of a flat plate and having a porous cathodic layer on one side and a porous anodic layer on the other side, which are laminated t

The present invention provides a solid electrolyte type of fuel cell of a planar type structure comprising a plurality of solid electrolyte plates, each being in the form of a flat plate and having a porous cathodic layer on one side and a porous anodic layer on the other side, which are laminated together through an interconnector plate provided in both its sides with grooves defining gas passages, wherein oxidizing agent and fuel gases are fed through said passages to the cathodic and anodic sides, thereby reducing the length of a current path running through regions of high resistance, increasing the degree of integration and improving reliability. By using heat-resistant parts for the interconnectors, cathodes and anodes, it is also possible to improve the resistance to oxidation and reduction as well as durability and obtain low resistance. it is further possible to obtain a fuel cell having satisfactory properties and capable of standing up to use over an extended period of time by using solid electrolyte for fuel cells which is obtained by sintering Y2O3-containing partially stabilized zirconia added with 5 to 20 % of alumina, has low resistance and high mechanical strength and is stable.

대표청구항 ▼

A solid electrolyte fuel cell comprising a plurality of solid electrolyte plates, each being in the form of a flat plate and having a porous cathodic layer on one side and a porous anodic layer on the other side; the solid electrolyte plates are laminated together through at least one interconnector

A solid electrolyte fuel cell comprising a plurality of solid electrolyte plates, each being in the form of a flat plate and having a porous cathodic layer on one side and a porous anodic layer on the other side; the solid electrolyte plates are laminated together through at least one interconnector plate defined by a heat-resistant part composed of a metal complex oxide film formed on an electrically conductive heat-resistant alloy, the at least one interconnector plate having in both its sides grooves defining passages wherein an oxidizing agent and fuel gases are fed to the cathodic and anodic sides through said passages, and a current is obtained from anodic and cathodic electrodes located at upper and lower ends of an assembly of the connected electrolyte plates.