碳化细菌纤维素/石墨烯(CBC/CCG)复合材料的制备及电化学性能研究  

Preparation and electrochemical properties of carbonated bacterial cellulose/graphene(CBC/CCG) composites

作　　者：吴慧[1] 马拥军[1] 朱东升[1] 裴重华[1] 

机构地区：[1]西南科技大学四川省非金属复合与功能材料重点实验室-省部共建国家重点实验室培育基地,四川绵阳621010

出　　处：《功能材料》2013年第8期1073-1076,1080,共5页Journal of Functional Materials

基　　金：四川省非金属复合与功能材料重点实验室-省部共建国家重点实验室培育基地开放基金资助项目(11zxfk26)

摘　　要：将氧化石墨烯(GO)与碳化细菌纤维素(CBC)(7∶3,质量比)超声复合,用水合肼原位还原制得碳化细菌纤维素/石墨烯(CBC/CCG)复合材料。利用动态力显微镜(DFM)、扫描显微镜(SEM)、X射线衍射(XRD)、激光拉曼光谱(Raman)对其形貌、结构进行表征。并通过循环伏安、交流阻抗、恒流充放电测试等方法比较了CBC/CCG复合材料和石墨烯(CCG)作为超级电容器电极在6mol/L KOH溶液中的电容性能。结果表明,在10mA/cm2电流密度下,CCG比容量为87.79F/g,CBC/CCG复合材料的比容量达到168.99F/g,CBC/CCG复合材料的电化学性能要优于CCG,具有良好应用前景。Carbonated bacterial cellulose/graphene（CBC/CCG）compositions-were prepared by the ultrasonication and in situ reduced using hadrozine hydrate, with a mass ratio of graphene oxide（GO）/CBC, （7 ： 3）. Scanning electron microscopy（SEM）, dynamic force microscopy（DFM）, X-ray diffraction（XRD） and laser Raman spectoscopy（Raman） were used to characterize the samples. The capacitive behaviors of the CCG/CBC composite and CCG as electrodes for supercapacitors were compared in terms of cyclic voltammograms, charge-discharge curves and electrochemical impedance spectroscopy（EIS） in 6mol/L aqueous KOH. The results show that the specific capacitance of CBC/CCG composites could be up to 168.99F/g under the current density of 10mA/cm2 ,which was superior to CCG of 87.79F/g, indicating that CCG/CBC composites have good prospects for electrochemical applications.

关 键 词：超级电容器 石墨烯 碳化细菌纤维素 比电容 

分 类 号：TB332[一般工业技术—材料科学与工程]