Abstract:
PURPOSE: A manufacturing method of an electrode device is provided to restrain structural defect of each composing layer, the delamination between the composing layers or interface defect. CONSTITUTION: A manufacturing method of an electrode device comprises a step of adding sintering additive to an anode supporter and/or an electrolyte, and sintering the mixture. The electrode device comprises anode supporter including ABO_3 based proton conducting ceramic in chemical formula: Ba(Zr_(1-x-y)Y_xM_y)O_(3-δ), and electrolyte. In chemical formula, M is one selected from a group consisting of transition metals, Cu and Zn, 0
Abstract:
The present invention relates to a proton conducting solid oxide fuel cell characterized by forming an anode and an upper electrolyte both having a similar sintering rate, and a lower electrolyte having a relatively slow sintering rate into a pseudo-symmetric laminated structure, and co-firing the formed structure to improve density of the lower electrolyte. According to the present invention, an interfacial defect caused by the asymmetry of sintering shrinkage behavior of a conventional fuel electrode layer and an electrolyte layer is preventable, since the electrolyte adjacent to the anode is formed in a dense structure, chemical stability for CO_2 gas is able to be provided, and polarization resistance of an air electrode is reducible, thereby being able to provide and commercialize the proton conducting solid oxide fuel cell having a high output.