模板电沉积法制备柔性电极材料及其在超级电容器中的应用

发布时间：2018-05-06 19:51

本文选题：聚苯胺 + 二氧化锰　；参考：《南京邮电大学》2017年硕士论文

【摘要】：本论文采用一步模板电沉积法制备了能用于柔性全固态对称超级电容器的活性电极材料,其中包括聚苯胺、二氧化锰和聚噻吩。此外,利用扫描电子显微镜(SEM)对材料的形貌进行了观察。同时利用傅里叶变换红外光谱(FT-IR)、X射线衍射(XRD)和X射线光电子能谱(XPS)等对材料的结构和组成进行了表征。之后研究了这些材料的电化学性能。本论文主要研究内容如下:1.采用一种简易的模板电沉积方法制备了PANI有序纳米管阵列膜电极。在该方法中,PANI纳米管通过循环伏安法沉积在Au/PC膜中。使用PVA/H2SO4作为固态凝胶电解质,所获得的PANI纳米管阵列膜可以直接用作柔性全固态超电容器的电极。制备的超级电容器可以达到237.5mF cm-2的最大面积比电容。在电流密度为1.0 mA cm-2的条件下经过2000个循环,仍保持初始电容值的95.2%,这显示其优异的循环稳定性。除此之外,所制备的超级电容器能够成功点亮LED灯,证明了其潜在的实际应用价值。2.通过简单的电沉积方法成功获得了MnO_2多孔纳米线。所获得的基于MnO_2多孔纳米线的薄膜用作电极材料,用PVA/LiCl作粘合剂和固态电解质以构建超级电容器,其面积比电容可以达到44.6 mF cm-2。该超级电容器同时表现出了优异的柔性和良好的稳定性,而且可以点亮LED灯。这些结果表明,基于MnO_2多孔纳米线的柔性电极对于在高性能超级电容器器件中的应用是非常有前景的。3.通过一步电沉积方法制备了用不同的酸介质和表面活性剂掺杂的PEDOT纳米管.所构建的超级电容器面积比电容可达到113.5 mF cm-2。在2000次循环后,其电容值几乎保持初始电容值的95.5%,显示出了优异的循环稳定性。制备出来的柔性全固态超级电容器可以点亮LED灯,以用来满足微电源的实际应用。凭借显著的性能,该设备可以成为柔性和便携式/可穿戴电子设备能量存储系统的最有前景的候选者之一。
[Abstract]:In this paper, active electrode materials, including Polyaniline, manganese dioxide and polythiophene, were prepared by one-step template electrodeposition for flexible all-solid-state symmetric supercapacitors. In addition, the morphology of the material was observed by scanning electron microscope (SEM). The structure and composition of the materials were characterized by Fourier transform infrared spectroscopy (FTIR) and X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). The electrochemical properties of these materials were studied. The main contents of this thesis are as follows: 1. The PANI ordered nanotube array membrane electrode was prepared by a simple template electrodeposition method. In this method, pani nanotubes were deposited in Au/PC films by cyclic voltammetry. Using PVA/H2SO4 as solid gel electrolyte, the PANI nanotube array film can be directly used as electrode for flexible all-solid supercapacitor. The prepared supercapacitor can reach the maximum area specific capacitance of 237.5mF cm-2. When the current density is 1. 0 Ma cm-2, the initial capacitance is kept at 95.2% after 2 000 cycles, which shows its excellent cycle stability. In addition, the supercapacitor can successfully illuminate the LED lamp, which proves its potential practical application value. 2. MnO_2 porous nanowires were successfully obtained by simple electrodeposition. The thin films based on MnO_2 porous nanowires were used as electrode materials, and PVA/LiCl was used as binder and solid electrolyte to construct supercapacitors. The area specific capacitance of the supercapacitors was up to 44.6 mF cm-2. The supercapacitor also shows excellent flexibility and stability, and can light up the LED lamp. These results show that the flexible electrode based on MnO_2 porous nanowires is very promising for its application in high performance supercapacitor devices. PEDOT nanotubes doped with different acid media and surfactants were prepared by one step electrodeposition. The area specific capacitance of the supercapacitor can reach 113.5 mF cm-2. After 2000 cycles, the capacitance value is almost 95.5% of the initial capacitance value, showing excellent cycle stability. The flexible all-solid-state supercapacitor can light up the LED lamp to meet the practical application of micro-power supply. With significant performance, the device can be one of the most promising candidates for flexible and portable / wearable electronic devices energy storage systems.
【学位授予单位】：南京邮电大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TB383.1;TM53

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