基于柠檬酸铁的介孔碳材料的制备及电化学研究  

Synthesizing and analysing electrochemical features on mesoporous carbons materials

作　　者：韩春霞[1] 赵夏冰[1] 张振武[1] 雍厚辉[1] 龚卫南 杨文忠[1] 

机构地区：[1]南京工业大学理学院,南京211816

出　　处：《功能材料》2015年第20期20039-20042,共4页Journal of Functional Materials

基　　金：国家水体污染控制与治理科技重大专项资助项目(2013ZX07210-001)

摘　　要：以柠檬酸铁为原料,采用直接碳化法,制备出介孔碳材料。通过SEM和TEM对其形貌进行分析,发现样品具有大量的孔道结构。N2吸附测试表明,所制备介孔碳MCs-800的比表面积高达1 918m2/g。采用TG技术研究了柠檬酸铁在氮气气氛中的热解过程。并用循环伏安法和恒电流充放电法进行电化学测试。测试表明,以柠檬酸铁为原料碳化所得的介孔碳的循环伏安图形接近矩形,在恒电流充放电过程中发现样品在不同的电流密度下均呈现出较规则的三角形,且阳极和阴极过程基本对称,表明样品具有良好的电化学稳定性和可逆性。In this paper,mesoporous carbons were successfully sythesized by direct pyrolysis of ferric citrate salts in a nitrogen atmosphere.The morphology of the samples were characterized by transmission electron microscopy(TEM),scanning electron microscopy(SEM).N2adsorption-desorption test shows that the specific surface area of mesoporous carbon MCs-800 was 1 918m2/g.The pyrolysis process of Ferric citrate was studied by TG technology in nitrogen atmosphere.Cyclic voltammetry(CV)and Galvanostatic charge/discharge(GC)measurements are applied to evaluate the electrochemical potential of MCs.Based on the results,we can find out that the CV curves of MCs-800 prepared by directly pyrolysising ferric citrate yield a shape of rectangular.Galvanostatic charge/discharge measurement demonstrates that samples at different current densities present well triangular shape,and the anode and the cathode process basic symmetric,suggests that the sample has good electrochemical stability and reversibility.

关 键 词：超级电容器 电化学 介孔碳 柠檬酸铁 

分 类 号：TB34[一般工业技术—材料科学与工程]