A Comparative Study of Electrochemical Capacitance of Graphene Oxide Affected by Oligomers of p-phenylenediamine and Hydrazine Hydrate in Solvothermal Condition  

作　　者：ZHANG Qingqing ZHANG Qingwu LU Hao WANG Wei FANG Tian LIU Hongying LIU Jiaji WANG Shuangshuang 

机构地区：[1]School of Chemical&Environmental Engineering,China University of Mining&Technology,Beijing 100083,China

出　　处：《Journal of Wuhan University of Technology(Materials Science)》2020年第2期253-262,共10页武汉理工大学学报（材料科学英文版）

基　　金：the University Innovation Research and Training Program(C201603050,C201703648,and C201803850)of China University of Mining and Technology,Beijing;2018 University Student Entrepreneurship Practice Project。

摘　　要：A systematic investigation of the graphene oxide composite reduced by either p-phenylenediamine oligomers or hydrazine hydrate was performed with field emission scanning electron microscopy,high resolution transmission electron microscopy,X-ray diffraction,fourier transform infrared,and X-ray photoelectron spectroscopy analyses.The electrical capacitance of the composite was evaluated by a cyclic voltammetry technique,while the properties of these prototype supercapacitors were measured by a chronopotentiometry technique.It was found that,under the solvothermal condition,the graphene oxide reduced by p-phenylenediamine oligomers was observed to have higher electrical capacitance than that reduced by hydrazine.The improved electrical capacitance can be attributed to that p-phenylenediamine oligomers are the more effective spacers for graphene layers;and they could also provide some pseudo-capacitance to the graphene oxide composite based on their conjugate structure.The results imply that graphene oxide modified by diamine oligomers has a good potential in energy storage devices.

关 键 词：OLIGOMERS P-PHENYLENEDIAMINE graphene oxide HYDRAZINE SUPERCAPACITORS 

分 类 号：TB332[一般工业技术—材料科学与工程] TM53[电气工程—电器]