La_(2-x)Sr_xCuO_(4+δ)型类钙钛矿复合氧化物氧电极的电化学研究

Electrochemical studies on the electrode for perovskite-like complex oxides La_(2-x)Sr_xCuO_(4+δ)

本文合成了La2-xSrxCuO4+δ(0≤x≤1)系列类钙钛矿复合氧化物,并作为催化层电极材料制备了空气电极,在碱性介质中以Hg/HgO为参比电极通过测量电极的极化曲线、循环伏安曲线,考察了电极材料的电催化活性。研究发现,La2-xSrxCuO4+δ型类钙钛矿复合氧化物电极材料催化活性较高,并随Sr掺杂量的不同活性也有所变化,并研究了空气电极的动力学特征。

A series of perovskite - like complex oxides La2-xSrxCuO4＋δ （0 ≤ x ≤ 1 ） were prepared.The air electrode with different mass ratio Sr as catalyst layer material have been prepared , in alkaline solution, The electrocatalytic performances for oxygen reduction were evaluated by means of polarzation curve, cyclic voltammetry, by using Hg/HgO as a reference electrode , the results disclosed that La2-xSrxCuO4＋δ （0 ≤ x≤1 ）have excellent and different activity withThe different ratio of Sr. and also study the kinetics characteristic of air electrode.