COLLECTOR MATERIAL OF SOLID OXIDE FUEL CELL, AIR ELECTRODE COLLECTOR, AND THE SOLID OXIDE FUEL CELL

• Main Authors: FUKUI TAKEHISA, MISONO TERUHIKO, MURATA KENJI
• Format: Patent
• Language: English
• Published: 02.10.2008
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

PROBLEM TO BE SOLVED: To provide the air electrode collector material of a solid oxide fuel cell which is essential to have high electrical conductivity to lower a collector loss and that is compatible with the coefficient of thermal expansion consistent as the equivalent value of an electrolytic material. SOLUTION: The air electrode collector material is expressed in a general formula as ABO3. The symbol A corresponds to more than one element selected from among a group of La, rare-earth element, and alkali earth metal; and the symbol B is a composite material of a dope ceria powder and a perovskite compound oxidized powder comprising more than one element selected from a group of Co, Fe, Ni and Cu. More specifically, the perovskite compound oxidized powder is a lanthanium-strontium-cobalt oxide (LSC) powder, the dope ceria powder is a gadrinium-dope ceria (GDC) powder, and a volume ratio preferably lies in the range of 7:3 to 4:6 in the perovskite compound oxidized powder and the dope ceria powder. COPYRIGHT: (C)2009,JPO&INPIT