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用固相反应法合成了具有正交钙钛矿结构的 Pr Ga1-x Mgx O3( x=0 ,0 .0 5 ,0 .1 0 ,0 .1 5 ,0 .2 0 ,0 .2 5 ) .通过掺杂 ,样品的电导率显著提高 ,活化能降低 .所有样品均以离子导电为主 ,其中 Pr Ga0 .9Mg0 .1O3的氧离子电导率最高 ,在 80 0℃达到 0 .0 5 S/cm,Pr Ga0 .8Mg0 .2 O3的导电活化能最低 ,为 2 4 .1 9k J/mol.随着温度的升高 ,样品的离子迁移数增加 .Pr Ga0 .9Mg0 .1O3作为电解质的燃料电池在 94 0℃短路电流密度为 0 .4 5 A/cm2 ,最大功率密度达 0 .1 31 W/cm2 ,镁掺杂的 Pr Ga O3是一种性能优良的固体电解质
Pr Ga1-xMgxO3 (x = 0,0.5,0.1,0,0.1,5,0.2,0,0.5) with orthorhombic perovskite structure was synthesized by solid-state reaction ) .The conductivity of the sample was significantly increased and the activation energy was decreased by doping.All samples were dominated by ion conduction, of which Pr Ga0.9Mg0.1O3 had the highest oxygen ion conductivity and reached0.0 S at80 ℃ / cm, Pr Ga0 .8Mg0 .2 O3 has the lowest conductivity activation energy of 24.119 kJ / mol. As the temperature increases, the sample ion mobility increases .Pr Ga0 .9Mg0 .1O3 as electrolyte fuel The battery has a short-circuit current density of 0.45 A / cm2 at 94 0 ℃ and a maximum power density of 0.31 W / cm2. Magnesium-doped Pr Ga O3 is a good solid electrolyte