摘要
采用微孔纳米碳球为硬模板,KMn O4为锰源,制备了具有核壳结构的纳米复合材料C@MnO_2。首先以八苯基倍半硅氧烷为前驱体制得微孔含硅碳球xph-C-Si,除硅后得到微孔碳球xph-C。其次将所得微孔碳球xph-C在0.5 mol·L^(-1)KMnO4溶液中进行氧化锰壳层包覆反应,最终制得C@MnO_2复合材料。该复合材料为球形颗粒,尺寸约为200 nm左右。材料具有良好的分散性,其内部呈现出有序的微孔结构。采用三电极体系,在1 mol·L^(-1)硫酸钠电解液中对C@MnO_2电极材料进行循环伏安测试,该材料表现出较高的比电容值,在5 m V·s^(-1)的扫速下,C@MnO_2电极材料的电容值为286 F·g^(-1)。
The nanocomposite materials C@MnO2 with core-shell structure are prepared by adopting microporous carbon nanosphere in KMnO4 solution. Firstly, microporous carbon spheres are prepared by using eight phenyl silsesquioxane as precursor, then microporous carbon are reacted with 0.5 mol·L-1 KMnO4 to form C@MnO2. The nanocomposite C@MnO2 shows sphere-like morphology with the particle size about 200 nm, which shows good dispersity and regular microporous structure. The electrochemical property of as - prepared C@MnO2 has been tested by cyclic voltammetry in 1 mol·L-1 Na2SO4 solution, which exhibits high specific capacitance of 286 F·g-1 at 5 mV·s-1.
作者
王建芳
徐杰
王君
WANG Jian-fang XU Jie WANG Jun(College of Chemical Engineering and Modern Materials / Shaanxi Key Laboratory of Comprehensive Utilization of Tailings Resources, Shangluo University, Shangluo 726000, Shaanx)
出处
《商洛学院学报》
2017年第4期28-32,共5页
Journal of Shangluo University
基金
国家级大学生创新创业训练计划项目(201611396022)
商洛学院科研基金项目(16SKY017)
关键词
氧化锰
微孔碳
核壳结构
复合材料
manganese oxide
microporous carbon
core-shell structure
composite materials
