The influence of pretreatment on multi-wall carbon nanotubes for electrochemical capacitors

IMR OpenIR

	The influence of pretreatment on multi-wall carbon nanotubes for electrochemical capacitors
	X. Geng; F. Li; D. W. Wang; H. M. Cheng
	2013
发表期刊	New Carbon Materials
ISSN	1007-8827
卷号	28 期号:2 页码:146-150
摘要	Multi-wall carbon nanotubes (MWCNTs) prepared by chemical vapor deposition, were pretreated by ball milling, chemical activation, and ammoxidation and the influence of the pretreatment on their electrochemical capacitance was investigated. Results show that MWCNTs can be shortened and broken by ball milling and chemical activation, and as a result their surface area and pore volume are increased. However, ammoxidation decreases the surface area of the activated MWCNTs. The electrical conductivity of the ball-milled MWCNTs is the smallest while that of the ammoxidated is the largest. The specific capacitances of the ball-milled and the activated MWCNTs are close, but higher than that of the ammoxidated MWCNTs. The capacitances of the MWCNTs pretreated by ball milling, chemical activation and ammoxidation are reduced by 17, 27 and 13% respectively when the discharge current density is increased from 5 to 100 mA/g.
部门归属	[geng xin] univ sci & technol liaoning, sch chem engn, dept appl chem, anshan 114051, peoples r china. [geng xin ; li feng ; wang da-wei ; cheng hui-ming] chinese acad sci, shenyang natl lab mat sci, inst met res, shenyang 110016, peoples r china. ; cheng, hm (reprint author), chinese acad sci, shenyang natl lab mat sci, inst met res, shenyang 110016, peoples r china. ; gengxin60@163.com ; cheng@imr.ac.cn
关键词	Multi-walled Carbon Nanotubes Pretreatment Electrochemical Double-layer Capacitor Supercapacitors Composites Activation
URL	查看原文
语种	英语
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/71227
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	X. Geng,F. Li,D. W. Wang,et al. The influence of pretreatment on multi-wall carbon nanotubes for electrochemical capacitors[J]. New Carbon Materials,2013,28(2):146-150.
APA	X. Geng,F. Li,D. W. Wang,&H. M. Cheng.(2013).The influence of pretreatment on multi-wall carbon nanotubes for electrochemical capacitors.New Carbon Materials,28(2),146-150.
MLA	X. Geng,et al."The influence of pretreatment on multi-wall carbon nanotubes for electrochemical capacitors".New Carbon Materials 28.2(2013):146-150.