| 摘要 |
PURPOSE:To provide a low temperature operating type solid electrolytic fuel cell with an operation temperature of about 700 deg.C which has the output characteristic equal to a YSZ solid electrolytic fuel cell at 1000 deg.C and has no problem for the lives of a seal material and a structural material, and a method for manufacturing it. CONSTITUTION:In a solid electrolytic fuel cell having a three-layer structure consisting of an oxygen electrode 1, a solid electrolyte 2 and a fuel electrode 3, the oxygen ion conductive solid electrolyte 2 consisting of 95-85mole% of zirconium oxide, 5-10mole% of scandium oxide, and 0-5mole% of yttrium oxide is provided on the bottomed rectangular parallelepipedic porous electrode 1 having an opening 5 in a thickness less than 60mum by means of chemical evaporation and electrochemical evaporation. A solid electrolytic fuel cell having a high output density at an operating temperature of 700 deg.C is realized. Since CVD-EVD method is adapted as a method for forming the solid electrolyte, a fine electrolytic film with uniform composition which has a thickness less than 60mum can be easily manufactured. |
