摘要
针对MnO2存在导电性差、真实比容低、离子传导性差等问题,开发了新的制备方法,制备出了纳米网状结构的Ti基IrO2-MnO2纳米涂层。采用2种不同脉冲阳极电沉积法制备具有纳米网状结构的IrO2-MnO2纳米涂层,并利用XRD和场发射扫描电镜(FESEM)表征了工艺参数(不同沉积电流、沉积时间、沉积通断比)对IrO2-MnO2纳米网状结构生长状况的影响。研究表明:恒电流脉冲阳极电沉积法在沉积电流为2 mA,沉积时间10 min,沉积通断比为7∶1时得到的IrO2-MnO2纳米涂层其表面具有网状形貌。恒电位脉冲阳极电沉积法在沉积电位为1 V,沉积时间1 min,沉积通断比为5∶1能获得纳米网状MnO2;恒电位法脉冲阳极电沉积比恒电流法脉冲阳极电沉积制备的薄膜电极纳米网状形貌明显,电化学性能对比需进一步实验验证。
MnO2 has problems such as poor conductivity,low true specific capacity,and poor Ionic conductivity,Ti-based IrO2-MnO2 nanocoating with nanometer mesh structure in this paper.Two different pulsed anode electrode position methods were used to prepare IrO2-MnO2 nano-coatings with nanometer mesh structure.The effects of the process parameters(different deposition currents,deposition time,and deposition pass-through ratio)on the growth of IrO2-MnO2 nanometer reticular structure were characterized by XRD and FESEM.The results show that the surface of the IrO2-MnO2 nanometer coating obtained by constant current pulse anode deposition with a deposition current of 2 mA,a deposition time of 10 min,and a deposition breakdown ratio of 7∶1 has a reticular morphology.The constant potential pulse anode deposition method has a deposition potential of 1 V,a deposition time of 1 min,and a deposition breakdown ratio of 5∶1 to obtain nanometer mesh MnO2.The morphology of the membrane electrode nanometer prepared by the constant potential pulse electrode position is more obvious than that of the constant current electro deposition.
作者
陈娜
卢威
卢春民
叶志国
CHEN Na;LU Wei;LU Chun-min;YE Zhi-guo(Zhangjiajie Institute of Aeronautical Engineering,Zhangjiajie Hunan 427000,China;Ningbo Kaimin Sheng Machinery Co.,Ltd.,Ningbo Zhejiang 315800,China;School of Materials Science and Engineering,Nanchang Hangkong University,Nanchang 330063,China)
出处
《南昌航空大学学报（自然科学版）》
CAS
2019年第3期68-73,共6页
Journal of Nanchang Hangkong University(Natural Sciences)
基金
湖南省教育厅基金(16C1646)
