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摘要工作电极材料是超级电容器性能的主要影响因素，因此，寻找高性能的电极材料便成为研究重点。本文中以泡沫镍为基质分别制备了Co(OH)2电极、Co3O4电极和PPy/Co3O4电极。然后，通过扫描电子显微镜（SEM）、X射线衍射（XRD）、红外光谱（IR）对电极材料进行结构和形貌表征。最后，分别对这三种电极进行电化学测试和寿命测试，计算出电极的比电容、能量密度和功率密度。通过对比分析电极的各项性能，Co(OH)2电极的比电容最高可以达到812 F/g；Co3O4电极导电性最好；而PPy/Co3O4电极的功率密度在1 A/g下达到50 Wh/kg，并展现出极好的寿命，在循环充放电5000次之后，电容仍保留为原来的97％，具有很高的循环稳定性。42769
关键词 超级电容器 比电容 电极材料 聚吡咯 循环稳定性
毕业论文设计说明书外文摘要
Title Preparation and electrochemical properties of cobalt salts /conductive polymer/nickel foam integrative electrode
Abstract
The working electrode material is the main factor affecting the performance of the supercapacitor. Therefore, seeking a high-performance electrode materials has become the main work. In this paper, Co(OH)2 electrode ，Co3O4 electrode and PPy/Co3O4 electrode were prepared on the surface of nikel foam, respectively. And then the electrodes were characterized by scanning electron microscope(SEM), X-ray diffraction(XRD), infrared spectroscopy(IR). Finally, each of the three electrodes was tested for their electrochemical performance. The specific capacitance, energy density and power density of the electrode were calculated. The results show that Co(OH)2 electrode exhibited a high specific capacitance of 699 F/g at 1 A/g; Co3O4 electrode possesses the best conductivity of these three electrodes; Power density of PPy/Co3O4 electrode reaches 50 Wh/kg at 1 A/g, beside, after 5000 charge-discharge tests at a current density of 1 A/g, PPy/Co3O4 electrode still maintained 97% of its initial specific capacitance, with a high cycling stability.
Key words: supercapacitor electrode material specific capacitance PPy cycling stability
目 录
1. 绪论 1
1.1 前言 1
1.2 超级电容器概述 1
1.2.1 超级电容器的发展 1
1.2.2 超级电容器的特点 2
1.2.3 超级电容器的分类 2
1.2.4 超级电容器的应用 3
1.3 赝电容器电极材料 3
1.3.1 过渡金属氧化物 3
1.3.2 导电聚合物 4
1.3.3 复合电极材料 4
1.4 超级电容器工作原理 5
1.4.1 双电层电容器工作原理 5
1.4.2 法拉第赝电容器储能原理 5
1.5 本论文研究的内容与意义 7
2． 实验部分 9
2.1 实验试剂与器材 9
2.1.1 实验试剂 9
2.1.2 实验器材 9
2.2 材料的表征 9
2.2.1 X射线衍射分析（XRD）