PASTE FOR SOLID OXIDE FUEL CELLS, ANODE-SUPPORTED SOLID OXIDE FUEL CELLS USING THE SAME, AND FABRICATING METHOD THEREOF

摘要

The present invention discloses a paste for screen printing which is used in a process of fabricating an anode functional layer, an electrolyte layer and a cathode layer of an anode-supported solid oxide fuel cell. The paste for the solid oxide fuel cell contains raw material powder of each layer, ethyl cellulose which is a binder, alpha terpineol which is a solvent, and an alcoholic solvent which has solubility to a thermosetting binder contained in an anode support and which is added by 0.5 to 20wt% of alpha terpineol as an additional solvent. The present invention also discloses a fabricating method of an anode-supported solid oxide fuel cell which forms each layer of the fuel cell by screen printing by using the paste. According to the present invention, in the highly efficient pore structure anode support fabricated by thermosetting molding, the composition of the paste for screen printing is controlled to improve wettability, and the movement of the elements is restricted by curing, thereby reducing surface defects of the layers and interfacial defects between the layers in fabrication and improving the interface strength. As a result, the high performance large area solid oxide fuel cell can be economically and efficiently fabricated, and reliability of the product can be remarkably improved.