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摘要：本文采用涂渍法和静电纺丝技术两种方法制备了石墨烯材料。石墨烯是一种由碳原子以sp2杂化轨道组成751角型呈蜂巢晶格的平面薄膜，只有一个碳原子厚度的二文材料，而静电纺丝技术可以使石墨烯在溶剂挥发过程中受热，原来的片状结构蜷曲弯缩，改变石墨烯的二文结构,制备出新型纳米材料,进而改变石墨烯电化学特性。本研究旨在运用石墨烯独特的物化性质和高压静电纺丝在制备纳米材料方面上的技术优势,改变石墨烯材料的表面结构和电化学活性。采用了元素分析、傅里叶变换红外光谱、热重分析、比表面积和孔径对所制备的样品进行表征,并通过电化学法考察该纳米材料的电化学活性。结果表明，较涂渍技术，静电纺丝技术对氧化型石墨烯和还原型石墨烯都有较大的改变，不仅比电容增大，充放电稳定性显著提高；而包裹聚吡咯对石墨烯材料导电性能有所提高。27411
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关键词：石墨烯；静电纺丝技术；电化学特性
Study on the preparation of graphene nanomaterials by electrospinning
Abstract: Graphene materials were prepared by two methods of coating technology and electrospinning technology in this paper. Graphene is a planar thin film which was composed of a hexagonal lattice with SP2 hybridized orbitals with only one carbon atom thickness, However, electrospinning technology makes graphene heated in the process of solvent evaporation, the lamellar structure of nano materials curled up bending shrinkage, two-dimensional graphene structure change, made one new material, thus to change its electrochemical characteristics. In this study, the unique physical and chemical properties of graphene and the technical advantages of electrospinning technology in the preparation of nanomaterials were proposed to change the surface structure and electrochemical activity of the graphene materials. The prepared samples were characterized by elemental analysis, Fu Liye transform infrared spectroscopy, thermogravimetric analysis, specific surface area and pore size etc. The electrochemical activity of the nanomaterials was investigated by electrochemical method. The results show that compared with the coating technology, electrospinning technology has more great changes on the oxidized graphene and reduction of graphene, not only increasing the specific capacitance of samples, but also the charge discharge stability of samples is significantly improved. In addition to these, the conductive properties of coated polypyrrole graphene materials was improved.
Key words:Graphene; Electrospinning technology; Electrochemical characteristics
目录
摘要 3
关键词 3
Abstract 3
Key words 4
引言 4
1材料与方法 5
1.1仪器与试剂 5
1.2氧化型石墨烯（GO）的合成 6
1.3还原型石墨烯（GR）的合成 6
1.4氧化型石墨烯/吡咯（GO/PPY）的合成 6
1.5电化学测量 7
1.5.1纺丝样品的测量 7
1.5.2涂渍样品的测量 7
2 结果与分析 7
2.1 比表面积分析 7
2.2试样元素分析 7
2.3 红外光谱分析 8
2.4 热重分析 8
2.5 电化学测定 8
2.5.1计时电位分析法（CP） 8
2.5.2循环伏安法（CV） 10
2.5.3交流阻抗法（EIS） 12
2.5.4稳定性试验 13
3全文小结 13
3.1涂渍（原始）样之间的差异 13
3.2静电纺丝对材料的影响 13
致谢 13