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氨基化石墨烯电极制备及其电化学性能研究


本科学生毕业论文 论文题目: 氨基化石墨烯电极的制备 及其电化学性能测试 学 年 专 姓 学 院: 级: 业: 名: 号: 化学化工与材料学院 2010 级 高分子材料与工程 刘抱 20101649 孙立国 指导教师: 2014 年 4 月 26 日 摘要 利用改进 Hummers 法制备品质良好的氧化石墨烯,对得到的氧化石墨烯用氯化 亚砜酰卤化,酰卤化后的氧化石墨烯在甲苯与乙二胺的作用下得到氨基化的石墨烯, 干燥, 研成粉末, 然后利用自制的压片设备将氨基化石墨烯粉末制成片状石墨烯电极。 采用扫描电子显微镜(SEM) 、透射电子显微镜(TEM) 、原子力显微镜(AFM) 、X射线衍射仪(XRD) 、傅立叶变换红外光谱仪(FT-IR)等对所制备的氧化石墨烯与氨 基化石墨烯分别进行表征。对制备的石墨烯电极进行循环伏安测试(CV) 、交流阻抗 测试(EIS)来测试氨基化石墨烯电极的电化学性能。结果表明:经氨基化的石墨烯 表面氧化基团明显减少,羟基、氨基等含氧基团大部分被氨基代替,片状的氨基化石 墨烯电极可作为电化学电极。 关键词 氧化石墨烯;氨基化石墨烯;石墨烯电极 I Abstract The graphene oxides(GOs) were prepared by oxiding flake graphite via the modified Hummer’s method and halogenated by thionyl chloride after cleaning. Then the obtained GOs were aminated by reacting with ethanediamine in methylbenzene. The amino-graphenes were dried and pulverized, then crushed into pellet electrode at high pressure using homemade machine. The GOs and amino-graphenes in this experiment were analyzed and characterized by the search engine marketing(SEM), transmission electron microscope(TEM), X-ray diffraction(XRD) and fourier transform infrared spectrometer FT-IR. The cyclic voltammetry(CV) and electrochemical impedance spectroscopy(EIS) were used to illustrate the electrochemical performance of amino-graphene electrode. The results reveald that oxygen groups of the GOs such as hydroxyl and carboxyl groups were reduced and replaced by amino. The amino-graphene electrode can be apply to the electrochemical catalysis. Keywords graphene oxide(GO); amino-graphene;

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