TiN基IrO_2+Ta_2O_5涂层电催化性能研究  

Study on Electrocatalytic Properties of TiN Based IrO_2+Ta_2O_5 Coating Anodes

作　　者：姜俊峰[1] 徐海波[1] 王廷勇[2] 王佳[1] 许立坤[2] 成光[1] 

机构地区：[1]中国海洋大学,山东青岛266003 [2]海洋腐蚀与防护国防科技重点实验室中国船舶重工集团七二五研究所青岛分部,山东青岛266071

出　　处：《稀有金属材料与工程》2007年第2期344-348,共5页Rare Metal Materials and Engineering

摘　　要：采用热分解法制备了一种以离子镀TiN膜为基体的IrO2+Ta2O5涂层电极,通过极化曲线、循环伏安、电化学阻抗谱等电化学方法并结合扫描电镜、X射线能谱和X射线衍射研究了涂层的析氧电催化活性,并对460℃制备的涂层进行强化寿命实验。结果表明:涂层呈多孔、多裂纹的显微结构和多层电化学结构;制备温度对涂层表面形貌和电催化活性影响很大;该涂层阳极在保持了高电催化活性的同时,其使用寿命高于传统Ti基阳极,说明TiN作为此类催化电极的载体是可行的。The IrO2-Ta2O5 coating electrodes were prepared by the thermal decomposition on the TiN film as the carrier synthesized by means of multi-arc-ion-plating. The electrocatalytic activity of coating anodes was investigated by electrochemical measurements including cyclic voltammetry, anodic polarization curve and electrochemical impedance spectroscopy, scanning electron microscope （SEM） and energy dispersive X-ray detector （EDX） and X-ray diffraction （XRD）. The life time of the electrode prepared at 460℃ was attained by accelerated electrolysis test. The results showed that the TiN peak could be detected on XRD pattern in the preparing temperatures range from 420℃ to 540℃, but decomposed at 560℃. It is showed that the preparing temperature had a significant effect on its morphology and electrocatalytic activity. The life time of TiN based IrO2-Ta2O5 with high electrocatalytic activity is superior to that of the traditional Ti based IrO2-Ta2O5 coating anode. It is feasible to use TiN as the carrier for IrO2-Ta2O5 coating anode.

关 键 词：TIN IrO2 TA2O5 电催化 氧化物阳极 

分 类 号：TG174[金属学及工艺—金属表面处理]