| 摘要 |
PROBLEM TO BE SOLVED: To provide a fuel battery cell preventing the formation of a diffusion layer containing Ca and other elements, and having an excellent power generation performance at low temperatures by preventing the breakdown of a crystal structure of an electrolyte by firing.SOLUTION: A solid oxide fuel battery cell includes an inner electrode, a solid electrolyte, and an outer electrode which are sequentially laminated on the surface of a porous support. The porous support contains forsterite, and has a Mg/Si molar ratio of 1.90 or more and 2.2 or less, and a ratio A/B of 0.0% or more and 9.0% or less, where A denotes a maximum peak height which appears at a diffraction angle 2&thetas;=26.5°-27.0° and B denotes a maximum peak height which appears at 36.5°-37.0° in a powder X-ray diffraction pattern obtained by using a Cu-Kα line. |
