脉冲阳极电沉积制备锰氧化物涂层电极  

Manganese Oxide Coating Electrodes Prepared by Pulse Anodic Electrodeposition

作　　者：史艳华[1] 孟惠民[1] 孙冬柏[2] 俞宏英[1] 付花荣[1] 

机构地区：[1]北京科技大学腐蚀与防护中心,北京100083 [2]北京市腐蚀,磨蚀与表面技术重点实验室,北京100083

出　　处：《物理化学学报》2008年第7期1199-1206,共8页Acta Physico-Chimica Sinica

基　　金：国家863基金(2007AA05Z103)资助项目

摘　　要：采用脉冲阳极电沉积工艺制备掺杂的锰氧化物涂层电极,并利用FESEM、SEM、XRD及电化学等方法研究了涂层电极的形貌、相结构及性能.结果表明,该方法通过脉冲参数的调整,可获得优异的电催化性能与稳定性能的涂层电极.当脉冲频率(f)为90Hz,脉冲通断比为1∶2时,具有较大的镀速,获得较厚的涂层;氧化物为独特的纳米线与近球状纳米颗粒共聚的网络结构,不仅增加了电极的电催化活性,而且有效提高了电极的使用寿命,加速寿命达到1635h,比直流阳极电沉积提高55.3%.Doped manganese oxide coating electrodes were prepared by pulse anodic electrodeposition. Their morphology, phase structure and electrochemical properties were studied by field emitted scanning electron microscopy （FESEM）, scanning electron microscopy （SEM）, X-ray diffraction （XRD）, and electrochemical methods. The results showed that electrodes with high electrocatalytic activity and stability could be produced by adjusting the pulse parameter. The deposition rate was high when pulse frequency （f） was 90 Hz and the pulse duty factor was 1：2. The oxide has a network structure mixed by nanowires and spherical nanoparticles, which can effectively improve the electrocatalytic activity and service life of these electrodes. The accelerated life of electrode was 1635 h, which was 55.3% higher than that of direct current electrodeposition.

关 键 词：脉冲阳极电沉积 氧化物涂层 纳米结构 稳定性 电催化活性 

分 类 号：O646[理学—物理化学]