摘要本次毕设实验以氧化石墨，六水合硫酸镍为原料，水合肼为还原剂，采用湿化学这种方法制备石墨烯镀镍吸波材料。并采用TEM,SEM,XRD, 振动样品磁强计VSM等表征手段对镀镍后的石墨烯的微观形貌、尺寸厚度进行测试，并且对复合材料进行磁性测试和吸波性能测试，测试频率在2-18GHz之间，进一步为设计合成具有实用意义的纳米复合材料提供理论依据。结果表明, 石墨烯镀镍后材料为软磁性，且它的微波吸收峰随着样品厚度的增加向低频移动。而在石墨烯镀镍材料的厚度为2mm时，在8.7GHz左右达到最大衰减值﹣8.4dB。63805

毕业论文关键词：石墨烯; 湿化学法; 吸波性能

毕业设计说明书（论文）外文摘要

Title    Design and  Preparation of Nickel-coated Graphere and the study of its properties                   

Abstract In this paper, Graphene sheets and  NiSO4·6H2O are used as an experimental substrate to prepared Nickel-coated Graphere composite particles with the method of wet chemistry.In this experiment， H4N2·H2O is used as reducing agent. The Ni-coated graphene (NGF),nickel element content on the graphene surface and magnetic properties of the NGF were examined by SEM, TEM and VSM and so on to provide a theoretical basis for the design and synthesis of nanometer composite material. The complex relative permittivity and permeability of the NGF absorber were measured in the frequency range of 2−18 GHz.The results show that the graphene, after nicked coated，becomes soft magnetic properties, and its microwave absorption peak with increasing the sample thickness to move to the low frequency. While the thickness of the  Ni-coated graphene comes to 2mm, it reached the maximum attenuation values minus 8.4dB at about 8.7GHz.

Keywords  graphene; wet chemistry method; microwave absorption properties

1  绪论 1

1.1  石墨烯简单介绍 1

1.1.1  石墨烯的来源 1

1.1.2  石墨烯的结构 2

1.1.3  石墨烯的性质 2

1.1.4  石墨烯的吸波原理 3

1.1.5  国内外研究情况 4

1.2  本课题的研究背景及研究内容 5

1.2.1  研究背景 5

1.2.2  研究内容 6

1.3  石墨烯镀镍复合材料的制备 6

1.3.1  化学镀 7

1.3.2  湿化学方法 7

1.3.3  多元醇法 7

2  石墨烯化学镀镍 8

2.1  实验仪器与实验试剂 8

2.1.1实验仪器 8

2.1.2  实验试剂 9

2.2  表征方法及仪器 9

2.2.1  透射电子显微镜(TEM)分析 9

2.2.2  扫描电子显微镜(SEM)分析 10

2.2.3  X射线衍射仪（XRD）分析 10

2.2.4  振动样品磁强计（VSM）分析 10

2.2.5  能量色散X射线光谱仪(EDS) 10

2.2.6  吸收波长以及吸收率分析