Ba^(2+)缺位型SmBa_(0.95)CoCuO_(5+δ)固体氧化物燃料电池阴极材料的制备及性能研究

Preparation and performance of Ba^(2+) deficiency SmBa_(0.95)CoCuO_(5+δ) cathode for solid oxide fuel

为了提升双钙钛矿型氧化物SmBaCoCuO_(5+δ)的电化学催化活性,在Ba位引入阳离子空位,探究了Ba位阳离子空位对晶体结构、热学及电化学催化性能的影响.结果表明,引入Ba位阳离子空位后,使晶胞体积收缩,氧空位含量升高,从而降低材料的热膨胀系数,有效提升电化学催化性能.

In order to improve the electrochemical catalytic activity of double perovskite oxide SmBaCoCuO_(5+δ),cation vacancies were introduced at Ba site.The effects of cation vacancies at Ba site on crystal structure,thermal and electrochemical catalytic properties were investigated.The results show that the introduction of Ba-site cation vacancies shrinks the cell volume and increases the oxygen vacancy content,thereby reducing the thermal expansion coefficient of the material and effectively improving the electrochemical catalytic performance.