氧化石墨烯/聚苯胺复合材料的制备及电化学电容性能的研究  

Preparation and electrochemical capacitance properties of graphene oxide / polyaniline

作　　者：任永桃 李娟[1] 石琴[1] 

机构地区：[1]新疆大学化学化工学院,乌鲁木齐830046

出　　处：《化学研究与应用》2015年第7期991-996,共6页Chemical Research and Application

基　　金：新疆大学博士基金资助

摘　　要：以对苯二胺为引发剂,用苯胺和氧化石墨烯(GO)为原料,采用化学原位聚合法制备了氧化石墨烯/聚苯胺(GP)复合材料,不添加任何表面活性剂和模板剂。采用傅里叶变换红外(FTIR)光谱、X射线粉末衍射(XRD)、扫描电镜(SEM)和透射电镜(TEM)对复合材料进行了物性表征,并对其电化学性能进行了测试。结果显示,复合材料保持了氧化石墨烯的基本形貌,聚苯胺纤维分布在氧化石墨烯层间及所形成的褶皱上。二者形成的二元纳米复合材料,发挥良好的协同作用,电化学性能得到了改善。当电流密度为0.5A·g-1时,复合材料的比电容可以达到623F·g-1,远大于石墨烯和聚苯胺单体的比电容。Graphene Oxide / Polyaniline nanocomposite material were prepared by in situ polymerization of graphite oxide（ GO） and aniline in the presence of p-Phenylenediamine as initiator without any surfactants or templates. The morphology and structure of the material are characterized by scanning electron microscopy（ SEM）,transmission electron microscope（ TEM）,Fourier transform infrared spectroscopy（ FTIR） and X-ray diffraction（ XRD）. The electrochemical properties of the resulting materials are systematically studied using cyclic voltammetry（ CV） and constant current charge – discharge tests. The results show that the composite keeps the basic morphology of graphene oxide and Polyaniline fibers distributed between the graphene oxide layers and formed by folding. The extraordinary electrochemical properties of the composites were attributed to the well-designed structural advantages of binary nanocomposites and the good combination and synergistic effects between graphene oxide and polyaniline. A high gravimetric capacitance of 623 F g^-1 at a scan rate of 0. 5A / g is obtained by means of CPs.

关 键 词：氧化石墨烯 聚苯胺 引发剂 化学原位聚合 复合 

分 类 号：O646[理学—物理化学]