FUNCTIONAL LAYER MATERIAL FOR SOLID OXIDE FUEL CELL, FUNCTIONAL LAYER MANUFACTURED USING FUNCTIONAL LAYER MATERIAL, AND SOLID OXIDE FUEL CELL INCLUDING FUNCTIONAL LAYER

摘要

A functional layer material for a solid oxide fuel cell (SOFC) including a ceria ceramic oxide and a metal oxide including a metal, except for zirconium, having a Vegard's slope X represented by Equation 1 and having an absolute value |X| of the Vegard's slope X, wherein 27×105@|X|@45×105: X=(0.0220ri+0.00015zi) (1), wherein ri is an ionic radius difference between the metal and Ce4+, and zi is a charge difference between the metal and Ce4+.