摘要：超级电容器比起传统的电容器来说，具有更高的功率，更长的寿命和更良 好的安全性等等的优点。因此，制备性能更优越的电极材料成为这个领域的研究 重点。本文采用水热法复合了钴酸镍与氧化锰材料以及氧化镍与氧化锰材料，利 用 X 射线衍射分析仪和扫描电镜对产物的结构与形貌进行了分析，利用循环伏 安法和恒流充放电法测试了其电化学性能。XRD 结果显示，发现钴酸镍/二氧化 锰复合材料与氧化镍/二氧化锰复合材料的水热产物经 250℃热处理后分别制备 得到钴酸镍复合二氧化锰复合材料与氧化镍复合二氧化锰复合材料，从扫描电镜 中看出，钴酸镍/二氧化锰复合材料是呈现薄薄透明的纳米片花状形貌，且分散 均匀，随着水热反应时间的延长，纳米片变厚。在电化学测试结果显示，水热反 应时间为 1H 的时候电化学性能最好，其在 0.5A/g 的电流密度下的比电容是 326F/g。氧化镍/二氧化锰产物为薄片状形貌。在电化学测试结果显示，水热反 应时间为 1H 的时候其电化学性能最好，其在 0.5A/g 的电流密度下的比电容是 329F/g。两种复合材料中钴酸镍/二氧化锰复合材料倍率性能更好。66338

毕业论文关键词：超级电容器；钴酸镍；二氧化锰；氧化镍；复合电极材料

Application of Nickel Cobalt in Supercapacitor

Abstract：Supercapacitors have the advantage of higher power, longer life and better safety than traditional capacitors. Therefore, the preparation of more superior performance of the electrode material has become the focus of this area. In this paper, the structure and morphology of the products were analyzed by X-ray diffraction (XRD) and scanning electron microscopy (SEM), and the effects of cyclic voltammetry and constant current Charge and discharge method to test its electrochemical performance. XRD results show that the hydrothermal products of nickel cobalt oxide/manganese dioxide composite material and nickel oxide/manganese dioxide composites are prepared by heat treatment at 250 ℃ to obtain nickel carbonate composite manganese dioxide composite material and nickel oxide composite dioxide The results show that the nickel oxide/manganese dioxide composite is a thin and transparent nano-sheet with a flower-like morphology, and the

dispersion is uniform. As the hydrothermal reaction time is prolonged, the nanosheets become thicker. The electrochemical test results show that the electrochemical performance is best when the hydrothermal reaction time is 1H, and the specific capacitance at the current density of 0.5 A/g is 326 F/g. The nickel oxide/manganese dioxide product is a flaky morphology. In the electrochemical test results show that the hydrothermal reaction time is 1H when its electrochemical performance is best, its 0.5A/g current density of the specific capacitance is 329F/g. The composite properties of nickel cobalt oxide/manganese dioxide composites in the two composites are better.

KeyWords： Supercapacitor; nickel cobalt oxide; manganese dioxide; nickel oxide; composite electrode material

目 录

1 文献综述 1

1.1 超级电容器的概述 1

1.1.1 超级电容器的历史 1

1.1.2 超级电容器的特点 2

1.1.3 超级电容器的应用 4

1.1.4 研究超级电容器的意义 4

1.2 超级电容器的结构及其工作原理 5

1.2.1 超级电容器的结构 5

1.2.2 超级电容器的原理 5

1.3 超级电容器电极材料的研究