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本文采用热分解法制备Ti/Ru-Ir-Sn氧化物阳极,运用TGA、SEM、EDS、循环伏安、电化学交流阻抗、极化曲线以及强化电解寿命测试方法,探讨添加不同含量碳纳米管(CNTs)对Ti/Ru-Ir-Sn氧化物阳极的影响规律.热重分析和阳极能谱数据表明,在烧结温度470oC条件下CNTs未发生高温氧化分解,仍以单质形式存在阳极涂层中.与对比样品相比,涂层表面裂纹增多,但仍保持典型形貌.添加CNTs显著改善了Ti/Ru-Ir-Sn氧化物阳极的电化学性能,增大了阳极的活性表面积,减小了涂层内部电阻,提高了阳极析氯电催化活性,析氯电位增加缓慢,阳极强化电解寿命也得到明显延长.其中,添加0.1 g·L-1CNTs的Ti/Ru-Ir-Sn氧化物阳极电催化活性和稳定性最优.
In this paper, Ti / Ru-Ir-Sn oxide anodes were prepared by thermal decomposition method. TGA, SEM, EDS, cyclic voltammetry, electrochemical impedance spectroscopy, polarization curves and enhanced electrolytic life test methods were used to investigate the effect of adding different content of carbon nanotubes (CNTs) on the anodes of Ti / Ru-Ir-Sn oxide were investigated.The results of thermogravimetric analysis and anodic spectroscopy showed that CNTs did not oxidize under high temperature at 470oC, Compared with the control samples, the coating surface cracks increased, but still maintain the typical morphology.Adding CNTs significantly improved the electrochemical performance of the Ti / Ru-Ir-Sn oxide anode, increased the active surface area of the anode, decreased The internal resistance of the coating increased the electrocatalytic activity of the anodic chlorine evolution, the slow increase of the chlorine evolution potential and the prolonged electrolysis life of the anodic electrolysis. In addition, Ti / Ru-Ir-Sn oxide anode with 0.1 g · L-1CNTs Electrocatalytic activity and stability of the best.