摘要:简单介绍了超级电容的原理、特点、优势以及常用的超级电容电极材料。并着重介绍了二氧化锰(MnO2)作为超级电容电极材料时的制备,表征以及相对优势。并且对MnO2作为超级电容电极材料时,在不同条件下的性能进行了测试。结果表明,在电化学沉积四氧化三锰(Mn3O4)时,沉积电压绝对值如果较低将会导致沉积较为稀疏,很难作为超级电容的电极使用。在本实验条件下,即在1mol/l的硫酸钠溶液当中,以5mv/s的扫速,在0-1.2v区间内,可以获得较好的电容性能。在氧化循环过程当中,Mn3O4氧化成为了MnO2,增加了其壁状结构的孔洞结构,从而导致了电容性能的显著提高。26054
关键词: 超级电容;二氧化锰;电极材料制备;性能测试 毕业论文设计说明书外文摘要
Title Preparation and Characterization of manganese dioxide
Super capacitor electrode materials
Abstract
It introduces the principle, characteristics and advantages of super capacitor. Describes the common electrode material of super capacitor. And focuses on the preparation of manganese dioxide (MnO2) as a super capacitor electrode material, characterization and comparative advantage. And when MnO2 as a super capacitor electrode materials ,we test the performance under different conditions. Experimental results show that when electrochemical deposition of manganese tetroxide (Mn3O4), the lower deposition voltage will result much more sparse deposit. It is difficult to use as a super capacitor electrode. Under the experimental conditions, namely in the 1mol / l sodium sulfate solution of them to 5mv / s sweep speed, in 0-1.2v range, you can get a better capacitive behavior. In the oxidation cycle process, Mn3O4 oxide became MnO2, increasing the pore structure of its wall-like structure, resulting in a significant increase in capacitance performance.
Keywords: Super capacitor ,Manganese dioxide, Preparation of electrode material Performance Testing
目 次
1 引言(或绪论) 1
1.1 MnO2储能机理 1
1.2 MnO2电极的常用制备方法: 2
1.3 MnO2电极材料研究现状: 2
1.4 MnO2的结构及其分类 3
1.5 超级电容的分类及其工作原理 5
2 实验部分 6
2.1 Mn3O4电极制备 6
2.2将Mn3O4经过电化学氧化从而变为MnO2 7
2.3 对已经氧化的MnO2钛片进行超级电容性能测试 8
3 实验数据处理以及结果分析 10
3.1 数据处理 10
3.2 实验结果分析 12
结 论 13
致 谢 14
参考文献15