北京科技大学学报2011，Vol.33Issue(11)：1387-1390,4.
多壁碳纳米管的表面改性及电化学储能
Surface modification and energy storage properties of multi-walled carbon nanotubes
摘要
Abstract
The modification of multi-walled carbon nanotubes（MWCNTs） was carried out with a mixed acid of concentrated sulfuric acid and nitric acid at a volume ratio of 3∶1.The morphology,specific surface area and surface functional groups of the resulting MWCNTs were analyzed by field emission scanning electron microscopy（FE-SEM）,surface area analysis and X-ray photoelectron spectroscopy（XPS）,respectively.The electrochemical properties of the MWCNTs were studied by cyclic voltammetry and galvanostatic charge-discharge tests.The results indicate that after oxidation by acid,the lengths of the MWCNTs are shortened,and the specific surface area is enlarged and the contents of surface nitrogen-and oxygen-containing functional groups increase.This leads to the enhancement of electrochemical properties of the MWCNTs,and the specific capacitance of MWCNTs can increase from 7 F·g-1 to 66 F·g-1.关键词
超级电容器/碳纳米管/表面处理/改性/储能/官能团Key words
supercapacitors/carbon nanotubes/surface treatment/modification/energy storage/functional groups分类
通用工业技术引用本文复制引用
关慧,范丽珍,乔素燕,曲选辉..多壁碳纳米管的表面改性及电化学储能[J].北京科技大学学报,2011,33(11):1387-1390,4.基金项目
国家自然科学基金资助项目 （）
北京市科技新星计划资助项目 （）
教育部新世纪优秀人才支持计划资助项目 （）
霍英东青年教师基金资助项目 （）
中央高校基本科研业务费专项资金资助项目 （）
