摘要超级电容器是一种介于传统电容器和化学电池之间的新型储能器件。有高能量密度,高功率密度,长循环寿命等特点,被广泛应用于交通运输等诸多领域。而镍钴的氢氧化物具有很高的理论比容量和高氧化还原活性,材料也比较廉价,是一种非常有前景的超级电容器电极材料。79536
本文采用一步水热法,以甲醇为溶剂分别溶解硝酸银,硝酸镍和硝酸钴的混合物,再进行水热反应,通过烘干得到镍钴掺杂银的样品,并以泡沫镍为基底,组装成测试电极,进行电化学性能测试,分析了不同样品的电化学性能差异。本文还采用了XRD、红外、SEM、XPS等手段对样品进行了表征,研究分析了不同银掺杂量对结构,性质的变化。
毕业论文关键词 一步水热法 超级电容器 银掺杂镍钴氢氧化物 比电容 电化学性能
毕业设计说明书外文摘要
Title 3D flower-like argentum-doped nickel/cobalt layered hydroxide for high performance supercapacitor
Abstract Supercapacitor is a new type of energy storage device between traditional capacitor and chemical battery。 It is widely used in many fields such as traffic and transportation due to their high energy density, high power density, and long cycle life。 Nickel/cobalt hydroxides possess a high theoretical specific capacity and high redox activity。 Thus they are very promising electrode materials for supercapacitor。
In this paper, different ratio of Ag-doped Ni/Co-LDHs with special hierarchical flower-shaped microsphere structure was synthesized via a one-step solvothermal method。 The samples were well characterized by XRD, FTIR, SEM and XPS measurements。 The as-prepared samples were used as electrode materials and the electrochemical performance were carried out in an electrochemical workstation。 The influence in the structure and electrochemical property with a different doping ratio of Ag was investigated。
Keywords:hydrothermal method;supercapacitor;Ag-doped Ni/Co layered hydroxide;specific capacitance;electrochemical properties
目 次
1 引言 1
1。1 研究背景与意义 1
1。2 超级电容器简介 1
1。3 本课题的研究目的和内容 4
2 实验方法 6
2。1 实验药品与仪器 6
2。2 微结构表征方法及原理简介 7
2。3 电化学测试方法和原理 8
2。4 Ag掺杂Ni/Co氢氧化物的制备 10
2。5 三电极体系工作电极的制备 10
2。6 非对称电容器的组装 11
3 结构表征与形貌分析 12
3。1 XRD表征 12
3。2 FT-IR分析 13
3。3 SEM表征 13
3。4 XPS分析 14
4 电化学性能测试 16
4。1 三电极电化学性能测试 16
4。2 非对称电容器电化学性能测试 20
4。3 本章小结 22
结 论