It was indicated that the appropriate amounts of Co and Fe ion not only caused the structure of catalysts close to perfect, but also had a positive effect on the adsorption and the ability of reaction of oxygen.

• 适量的Co和Fe离子的协同存在不但使催化剂结构更接近理想钙钛矿型，而且对催化剂的活性氧的吸附以及反应能力都起着积极的作用。