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纳米碳膜负载MnO2应用于超级电容器电极材料的研究

发表时间:2014-05-15  浏览量:1679  下载量:511
全部作者: 胡爱国,支键,张宇轩,王友付
作者单位: 华东理工大学材料科学与工程学院
摘 要: 以介孔硅支持的纳米碳膜材料(silica supported carbon nanomembrane, SS-CNM)为负载体,通过湿法浸渍引入Mn(NO3)2,然后通过碱性水解和高温焙烧方法获得负载MnO2纳米粒子的电极材料MnO2@SS-CNM. 通过X射线衍射(X-ray diffraction, XRD)证实在负载体内形成了MnO2纳米粒子;由透射电子显微镜(transmission electron microscopy, TEM)照片发现,MnO2纳米粒子进入SS-CNM的纳米孔道,形成均一的纳米结构;N2吸附实验证明,在该复合体内存在孔径均一的介孔孔道,有利于物质的输运;电化学实验证实,该类材料是一种良好的超级电容器电极材料,具有433 F/g的比电容及较高的循环稳定性。
关 键 词: 无机非金属材料;介孔硅;碳纳米膜;超级电容器;复合材料
Title: Embedding manganese oxide in silica supported carbon nanomembrane for supercapacitor electrode material
Author: HU Aiguo, ZHI Jian, ZHANG Yuxuan, WANG Youfu
Organization: School of Materials Science and Engineering, East China University of Science and Technology
Abstract: Using silica supported carbon nanomembrane (SS-CNM) as a conductive support, electrode material, MnO2@SS-CNM, was prepared by wetness impregnation of manganese nitrate in SS-CNM followed by hydrolysis and high temperature treatment. The formation of MnO2 nanoparticles was confirmed with X-ray diffraction (XRD). It was observed by transmission electron microscopy (TEM) that MnO2 nanopaticle went into the nanopores of SS-CNM and formed a uniform nanostructure. Nitrogen adsorption results showed the presence of size uniformly distributed mesochannels, which was essential for mass transportation. Electrochemical results showed that this electrode material exhibited high specific capacitance of 433 F/g and good cycle stability.
Key words: inorganic nonmetallic material; mesoporous silica; carbon nanomembrane; supercapacitor; composite material
发表期数: 2014年5月第9期
引用格式: 胡爱国,支键,张宇轩,等. 纳米碳膜负载MnO2应用于超级电容器电极材料的研究[J]. 中国科技论文在线精品论文,2014,7(9):829-834.
 
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