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采用刷涂-热分解的方法在多孔钛基体上获得了纳米线阵列的IrO2涂层电极。FESEM和XRD表征研究表明,在多孔钛基体表面上的IrO2涂层绝大多数为IrO2纳米线,其中纳米线的直径在50 nm左右;而在多孔钛基体截面上的涂层,全部由纳米线阵列组成,纳米线的直径与表面上的相差不大。在多孔钛基体上所获得的IrO2纳米线阵列涂层,活性氧化物的表面积有极大的提高,使其与氧气的接触面积有显著增大,因此循环伏安测试获得了很明显的氧化还原峰。强化寿命测试发现,IrO2/多孔钛电极的寿命为42天。电分析测试表明,IrO2纳米线阵列涂层电极的电流效率可达95%以上。
IrO2 coated electrodes with nanowire arrays were obtained on a porous titanium substrate by brush-thermal decomposition. FESEM and XRD characterization studies showed that the majority of IrO2 coatings on the surface of porous titanium substrate were IrO2 nanowires, of which the diameter of nanowires was about 50 nm; while the coating on the porous titanium substrate section was entirely composed of nanowires Array composition, the diameter of the nanowires and the surface or less. IrO2 nanowire arrays obtained on a porous titanium substrate greatly increase the surface area of the active oxide and significantly increase its contact area with oxygen, so that cyclic voltammetry results in significant redox peak. Life-span test found that, IrO2 / porous titanium electrode life of 42 days. Electroanalytical tests show that the current efficiency of IrO2 nanowire array coated electrodes can reach more than 95%.