| 摘要 |
PURPOSE: An electrolyte membrane for a solid oxide fuel cell is provided to include a dense thin film layer and a porous thin film layer, thereby maximizing the area occurred for electrochemical reaction, and improving the performance of the fuel cell. CONSTITUTION: An electrolyte membrane for a solid oxide fuel cell consists of two deposited layers. The two deposited layers are formed from one selected from oxygen ion conductive solid oxide, hydrogen ion conductive solid oxide, conductive solid oxide of oxygen ion, or a hydrogen ion. The average size of the crystal grain of the deposited layer near the anode is 5-100 nm. The average size of the crystal grain of the deposited layer near the cathode is 100-200 nm. The difference of the average size of the crystal grain of the two deposited layer is 50-195 nm. |
