Preparation of MnO2/Graphene Nanocomposite for the Application of Supercapacitor

摘要：

　　Graphene oxide was synthesized by an improved method,and then MnO2/graphene oxide composite was obtained using chemical precipitation.The MnO2/graphene nanocomposite was obtained via hydrazine reduction of the MnO2/graphene oxide composite.The morphology and surface chemical composition of the composites have been investigated by scanning electron microscope(SEM),Fourier transform infrared spectrum(FT-IR)and X-ray diffraction(XRD),respectively.The capacitive properties of the MnO2/graphene nanocomposite were measured using cyclic voltammetry and galvanostatic charge/discharge tests and electrochemical impedance spectroscopy in a double-electrode experimental setup using a 1 mol/L Na2SO4 aqueous solution as the electrolyte.The results of galvanostatic charge/discharge show that the composite has good electrochemical performance and the average capacitance is as high as 188.69 F/g at 1 A/g in the 1 mol/L Na2SO4 solution aqueous electrolyte.

关键词： graphene graphene oxide MnO2 nanocomposite supercapacitor

作者: Chunliang Liu Dayong Gui Jianhong Liu

作者单位: School of Chemistry and Chemical Engineering Shenzhen University Shenzhen,Guangdong 518060,P.R.China

会议类型: 国际会议

会议名称: The 15th International Conference on Electronic Packaging Technology (ICEPT 2014) ) (第十五届电子封装技术国际会议)

会议地点: 成都

会议语种:英文

页码: 177-182

在线出版日期: 2014-08-12（万方平台首次上网日期，不代表论文的发表时间）