摘要本文通过阳极氧化的方法制备了二氧化钛纳米管,通过改变电流、电压等条件,探究了二氧化钛纳米管的形貌与这些因素之间的关系。然后用电沉积方法制备了氧化钨-氧化钛复合结构材料,在实验中对比分析氧化钨在不同条件下生成的二氧化钛纳米管上的沉积状况得到影响氧化钨沉积效果的因素。之后通过电聚合方法在复合材料上聚合苯胺,制备成聚苯胺-氧化钨-氧化钛纳米复合电极,并对其在不同环境下的电化学性能进行了测试分析。主要工作如下: 实验采用恒压阳极氧化法制备二氧化钛纳米管,并通过改变氧化时电压的值来改变纳米管的形貌,实验后通过扫描电子显微镜(SEM)照到的纳米管阵列表面和横断面的照片来分析样品形貌的不同,可得到电压与纳米管管径和管长的关系。 将合适条件下制成的纳米管阵列用于沉积氧化钨,并通过改变沉积电压和沉积时间研究电压和时间对沉积效果的影响。通过实验我们找到了最佳沉积条件并进一步通过聚合苯胺制成了聚苯胺-氧化钨-氧化钛纳米复合电极,通过对循环伏安法测定的 CV 曲线进行分析,证明这种材料在中性和酸性条件下有优异的电化学活性,所以本实改进后的聚苯胺-氧化钨-氧化钛纳米复合电极在超级电容器上有很好的应用前景。 27235
毕业论文关键词 氧化钛 聚苯胺 超级电容器 阳极氧化
Title Preparation and research of polyaniline - tungsten oxide - titanium oxide nano composite electrode
Abstract
This dissertation was prepared polyaniline - tungsten oxide - titania nanocomposite electrode,
and were tested for its electrochemical performance in different environments .We explores the
voltage, current and other factors impact on the morphology of titania nanotubes. We also focus
on how the titania nanotubes, which generated in different conditions, impact on tungsten oxide
deposition. The main work is as follows:
The preparation of titania nanotubes is studied mainly though method of constant voltage
oxidation, and by changing the oxidation voltage values to change the morphology of the
nanotubes. By scanning electron microscope (SEM), we can observe the surface and
cross-section of nanotubes arrays to analysis the morphology of the different films, which can
help us obtain the relationship of voltage and nanotube diameter and length.
The nanotube arrays made under suitable conditions was used for the deposition of tungsten
oxide and to study the impact of voltage and time on deposition by changing the deposition
voltage and deposition time. Through experiments we have found the best deposition conditions
and further obtained the new composite electrode materials.
Keywords titania polyaniline(PINI) supercapacitor anodization
目录
1 引言 1
1.1 多孔阳极二氧化钛纳米管的制备与应用 1
1.2 导电聚苯胺 4
1.3 聚苯胺-氧化钨-氧化钛纳米复合电极 5
2 二氧化钛纳米管的制备及其形貌影响因素 6
2.1 电流密度对二氧化钛纳米管的影响 6
2.2 不同电压下二氧化钛纳米管生长情况 . 10
2.3 二氧化钛纳米管的扩孔处理 . 15
2.4 本章小结 . 18
3 聚苯胺-氧化钨-氧化钛复合电极的制备. 19 聚苯胺-氧化钨-氧化钛纳米复合电极的研究:http://www.751com.cn/huaxue/lunwen_21682.html