作　　者： ; ; ;

机构地区： 东莞理工学院化学与环境工程学院

出　　处： 《电池》 2009年第5期275-277,共3页

摘　　要： 分别采用超声化学法和化学混合法制备了MnO2/乙炔黑复合电极材料。XRD结果显示:超声化学法制备的粉体呈-αMnO2结构,化学混合法制备的粉体为无定形结构。SEM和电化学实验结果表明:超声辐射可促使MnO2与导电剂颗粒均匀分散,并能改善电极材料的电化学动力学可逆性,当乙炔黑含量为15%时,可使复合电极的电化学比电容提高两倍。 The composite electrode materials of MnO2/acetylene black（AB） were prepared via sonochemistry method and chemical mixing method, respectively. XRD analysis showed that the powder prepared by sonochemistry method presented a structure of α-MnO2 ,the powder prepared by chemical mixing method was an amorphous of MnO2. The results of SEM and electrochemical experiment indicated that the ultrasonic radiation could make MnO2 homogeneous dispersion with conductive agent,could improve electrochemical kinetics reversibility of the electrode material. The electrochemical specific capacitance of the composite electrode increased two times when AB content was 15%.

关 键 词： 超声化学 乙炔黑 电化学电容器 复合材料

领　　域： [电气工程]