静电纺丝锌锰复合材料电化学性能研究

摘要随着绿色能源的发展，蓄电技术发展受到广泛关注。超级电容器由于充放电的优势越来越受到重视。相较于其它电化学存储技术，超级电容器具有更长的循环寿命、更快的恒电流充放电速度等优势，被公认为一种绿色环保的能量存储模式，是当前能量存储系统的发展趋势。本文采用静电纺丝法制备锌锰基纳米材料，用聚乙烯吡咯烷酮(PVP)为高分子材料，乙醇作为溶剂添加不同浓度醋酸锌，醋酸锰为前驱体，通过静电纺丝制备出ZnMn纳米材料，经过高温煅烧，制得ZnMn纳米碳材料。通过对其红外光谱、XRD、比表面积等对材料物理和外貌进行表征。考察不同ZnMn比，煅烧温度对其电化学性能影响。对电化学CV,充放电，电阻对化学性能的表征。从而得到在ZMn比例在1：1时电极材料效果到在所做材料中有较好的效果。用做好的碳复合材料在研究其在甲基橙下的降解率，发现锌锰碳纳米复合材料降解率效果较好。关键词：超级电容器，静电纺丝，电极材料，锌锰纳米复合材料AbstractWith the development of green energy,the development of power storagetechnology has been widely concerned.Supercapacitors are being paid more and moreattention due to their advantages of charge and discharge.Compared with otherelectrochemical storage technologies,supercapacitors have the advantages of longercycle life,faster constant current charge and discharge speed,and are recognized as agreen energy storage mode,which is the development trend of current energy storagesystem.In this paper,zinc-manganese-based nanomaterials were prepared byelectrospinning,polyvinyl pyrrolidinone (PVP)as polymer material,ethanol assolvent with different concentrations of zinc acetate,manganese acetate as precursor,Zn Mn nanomaterials were prepared by electrospinning,processed by hightemperature calcination.The physical and appearance were characterized by infraredspectrum,XRD,specific surface area,etc.The influence of different Zn Mn ratiosand the calcination temperature on the electrochemical properties was investigated.Characterization of the electrochemical CV,charge and discharge,and resistance.Soget at the Zn/Mn ratio in 1:1.By studying the degradation rate of the finished carboncomposite materials under methyl orange,the degradation rate of zinc-manganesecarbon nanocomposite materials is better.Key words:supercapacitors,electrospinning,electrode materials,Zinc-manganesenanocomposites目录1引言…1.1纳米正极材料的现状21.1.1纳米正极材料认知及种类.21.1.2纳米正极材料的应用21.1.3纳米正极材料的发展21.1.4超级电容器31.1.5氧化锰在超级电容器的应用031.2静电纺丝在制备纳米材料的应用31.2.1静电纺丝的发展阶段…31.2.2静电纺丝的应用及发展方向.41.3纳米正极材料的制备方法.…1.3.1静电纺丝法制备纳米正极材料41.3.2物理制备法.…1.3.3化学合成法1.3.4生物制备法…51.4研究的内容及意义51.4.1研究的意义1.4.2研究的内容..62实验部分.…。72.1实验的主要试剂及仪器72.1.1主要试剂.…。72.1.2实验主要设备.72.2实验方法82.2.1静电纺丝前驱体的制备.82.2.2电池的制备92.2.3测试方法102.2.4光催化性能实验123结果与讨论.133.1不同锌锰比下纳米正极材料红外光谱测试比较.13