摘要：本文通过改变溶剂热反应的液体环境，探究所制备CuCo2S4纳米晶体形貌与粒径，以及作为电极材料的电容量。实验通过控制变量的方法，重点研究了溶剂种类、分散剂以及油浴时间对CuCo2S4纳米晶体制备形貌与粒径的影响，从而改变电容量。采用XRD物相分析、扫描电镜（SEM）等测试手段对所制备的CuCo2S4纳米晶体的形貌和粒径进行了分析观察，利用循环伏安测试(CV)、恒电流充放电测试(GCD)和电化学阻抗（EIS）等测试手段对电极的电容量进行进一步分析。

各方面综合因素可得，丙三醇溶剂环境比乙二醇溶剂环境所制备CuCo2S4纳米晶体的粒径更小，电极电容量更大；分散剂能够有效地防止CuCo2S4纳米晶体团聚；CuCo2S4纳米晶体的粒径随着油浴时间延长不断变大。因此，在溶剂环境中加入丙三醇、分散剂，油浴时间10h可制备出最理想的活性物质，此时活性物质的形貌呈花状结构；颗粒尺寸较小且分散均匀，比表面积大；在2Ag-1的电流密度下，电容量可达669F·g-1。

关键词：硫化物；双电层；CuCo2S4纳米晶体；超级电容

Abstract：In this paper, the morphology and particle size of CuCo2S4 nanocrystals were investigated by changing the liquid environment of solvent thermal reaction, and the capacitance of CuCo2S4 nanocrystals was investigated.The effect of solvent type, dispersant and oil bath time on the morphology and particle size of CuCo2S4  nanocrystals was  studied by controlling the variables, and the capacitance was changed.The morphology and  particle size of the prepared CuCo2S4 nanocrystals were analyzed by XRD phase analysis, scanning electron microscopy (SEM) and the capacitance of the electrode was further  analyzed by cyclic voltammetry (CV), constant current charge and discharge test (GCD) and electrochemical impedance (EIS).

Considering all aspects of factors,we can conclued that the content of CuCo2S4 nanocrystals prepared by glycerol solvent environment is smaller than that of ethylene glycol solvent environment, and the electrode capacitance is larger,dispersant can effectively reduce the particle size of CuCo2S4 nanocrystals and the size of CuCo2S4 nanocrystals increases with the prolongation of oil bath time.Therefore, in the solvent environment by adding glycerol, dispersant, oil bath time 10h can be prepared the most ideal active substances.

Keywords:Sulfide;double layer;CuCo2S4 nanocrystals;supercapacitor

目录

第一章绪论 1

1.1研究背景 1

1.1.1背景 1

1.1.2超级电容器概述 1

1.1.3新型储能器件的研究 3

1.1.4超级电容器研究概况 4

1.1.5超级电容器电极材料分类 6

1.2本文选题意义 8

1.2.1金属硫化物 8

1.2.2本文选题的意义 9

1.3研究内容 10

第二章实验与测试 11

2.1原材料 11

2.2实验仪器 11

2.3CuCo2S4活性物质合成配方 12

2.4实验内容 13

2.4.1活性物质制备 13

2.4.2活性物质的提纯 13

2.4.3电极的制备 14

2.5性能测试