| 摘要 |
The present invention relates to a low and intermediate temperature-type proton conducting ceramic fuel cell which has a structure in which an anode support layer, an anode function layer, a barium cerates (BCY)-electrolyte layer comprising yttria-doped BCY, a barium zirconate (BZY)-electrolyte layer comprising yttria-doped BZY, a cathode function layer, and a cathode current-collecting layer are sequentially stacked. In the low and intermediate temperature-type proton-conducting ceramic fuel cell according to the present invention, provided is a bi-layer electrolyte structure that is formed by stacking the BZY-electrolyte layer on a cathode-side surface of the BCY-electrolyte layer which exhibits high proton conductivity but has low chemical stability, and thus a phenomenon in which the BCY-electrolyte layer is deteriorated does not occur even under high water vapor pressure that is generated under severe stack driving conditions, such as inverse voltage, high current density, or high air utilization, thereby exhibiting excellent long-term durability. |
