POROUS CATHODE COMPOSITE FOR SOLID OXIDE REGENERATIVE FUEL CELL, FABRICATION METHOD THEREOF AND SOLID OXIDE REGENERATIVE FUEL CELL COMPRISING THE SAME

摘要

The present invention relates to a porous cathode composite for a solid oxide regenerative fuel cell comprising a porous composite of perovskite and the fluorite and a nanocatalyst formed on the surface of an electrode of the porous composite. The performance of a conventional solid oxide regenerative fuel cell (SORFC) has been greatly limited by the polarization of a cathode, but according to the present invention, as the nanocatalyst is uniformly penetrated into cathode pores of the porous composite, a cathode surface reaction for O2 reduction and O2 oxidation is promoted and the performance of a solid oxide fuel cell (SOFC)/a solid oxide electrolysis cell (SOEC) can be greatly enhanced at the same time. Moreover, a method for manufacturing a cathode composite for a solid oxide regenerative fuel cell in accordance with the present invention can easily be introduced into a production process by being applied to various conventional solvent injection technologies and can contribute to the simplification of a manufacturing process by proceeding crystallization during the initial operation of the solid oxide regenerative fuel cell (SORFC) without an additional heat treatment process as the cathode composite is crystallized at 800 deg. C.