采用热氧化法制备了ＩｒＯ２－ＳｎＯ２／Ｔｉ和ＩｒＯ２－ＰｄＯｘ－ＳｎＯ２／Ｔｉ两种电极．通过极化曲线、循环伏安曲线和寿命强化试验研究了它们在不同电阻率溶液（模拟淡海水和淡水）中的电化学行为，且进一步通过扫描电镜（ＳＥＭ）对电极涂层寿命试验前后的表面形貌进行了分析研究．结果表明：钛基二氧化铱电极具有良好的电催化活性，在淡水环境中使用时，该阳极具有稳定性好、排流量大、重量轻、工作寿命长等优点． IrO2-SnO2 / Ti and IrO2-PdOx-SnO2 / Ti two electrodes were prepared by thermal oxidation. Their electrochemical behaviors in different resistivity solutions (simulating light sea water and fresh water) were investigated by polarization curves, cyclic voltammetry curves and lifetime enhancement tests. The electrochemical behavior of the coatings before and after the electrode coating life test was further studied by scanning electron microscopy (SEM) Surface morphology was analyzed. The results show that the titanium-based iridium dioxide electrode has good electrocatalytic activity. When used in fresh water environment, the anode has the advantages of good stability, large displacement, light weight and long working life.