中文摘要：

合成了La2-xSrxNiO4＋δ（O≤x≤1）系列类钙钛矿复合氧化物，并将其作为催化层电极材料制备了空气电极．对电极的极化曲线和循环伏安曲线的测定结果表明，La2-xSrxNiO4＋δ帖型类钙钛矿复合氧化物电极材料对氧还原具有较好的催化活性；并且随Sr的掺杂量的不同，材料的催化活性也有所不同．循环伏安和交流阻抗技术对电极反应动力学特征的研究结果表明，电极反应除受电化学步骤控制外，扩散过程也是整个电极过程的控制因素．

英文摘要：

A series of perovskite-like complex oxides La2-xSrxNiO4＋δ （0≤ x ≤ 1 ）, which were used in the oxygen electrode as electrocatalyst, were prepared by means of sol-gel method. In alkaline solution, the electrocatalytic performance of prepared electrodes was evaluated by means of polarization curve, cyclic vohammetry, and electrochemical impedance spectroscopy （EIS） technologies using Hg/HgO as a reference electrode. Experimental results indicate that the perovskite-like materials La2-xSrxNiO4＋δ （0 ≤ x ≤ 1 ） have excellent activity as electrocatalyst. Furthermore, the activities are different with the changing of Sr contents in the materials. The EIS technology revealed the electron process to be a mixed control of electrochemistry reaction and diffusion process. The equivalent circuit of the air electrode was proposed and the simulated kinetics data were analyzed