| 摘要 |
PURPOSE:To improve conductivity and reliability at a small Ni inclusion ratio by approximating thermal expansion coefficients between those of a hydrogen electrode and a solid electrolyte while adopting a substance, wherein LaySrxCrzO (x-z=a specific value) is mixed into. NiO at respective specific wt. ratio, as the hydrogen electrode. CONSTITUTION:A substance, wherein La Sr CO (x=0.05-0.02) is mixed into NiO at a ratio of 30-60% to 70-40 % in a wt. ratio, is adopted as a hydrogen electrode. For instance, an LSC particle 4 and NiO use a substance having a mol ratio of La0.2 Sr0.8 CrO3 and a particle diameter of 2mum and a substance having a particle diameter of 2mum, respectively, and are mixed so as to have a wt. ratio of NiO:LSC=60:40. In a fuel electrode 2, wherein a reultant mixture is adopted as slurry to be applied onto a solid electrolyte (YSZ) 1 to be baked at 1400 deg.C, the reaction of H2+O<2> H2O+2e is caused and a conductivity inspection can be possible. Also, a 3-phase interface can be enlarged because a thermal expansion coefficient approximates the electrolyte 1, conductivity as high as about 700 S/cm can be obtained by a small Ni content, and all electrode surfaces have conductivity. Consequently, conductivity and reliability can be improved. |
