Ball-milling preparation of one-dimensional Co-carbon nanotube and   Co-carbon nanofiber core/shell nanocomposites with high electrochemical   hydrogen storage ability

doi:10.1016/j.jpowsour.2014.01.034

CORC > 北京大学 > 化学与分子工程学院

	Ball-milling preparation of one-dimensional Co-carbon nanotube and Co-carbon nanofiber core/shell nanocomposites with high electrochemical hydrogen storage ability
	Chang, Cheng ; Gao, Peng ; Bao, Di ; Wang, Longqiang ; Wang, Ying ; Chen, Yujin ; Zhou, Xiaoming ; Sun, Shuchao ; Li, Guobao ; Yang, Piaoping
刊名	电源杂志
	2014
关键词	One-dimensional Co-carbon nanocomposites Ball-milling Core-shell structure Layer-by-layer growth Electrochemical hydrogen storage COBALT GRAPHENE NANOPARTICLES ADSORPTION BEHAVIOR ALLOYS WEBS
DOI	10.1016/j.jpowsour.2014.01.034
英文摘要	Owing to the special honeycomb structures and excellent electrical characters of carbon nanotube (CNT) and carbon nanofiber (CNF), they are extensively considered as ideal cornerstones for hydrogen storage materials. Herein, metal cobalt has been uniformly coated on CNT's and CNF's surfaces in nanoscale through a simple ball milling process. Accordingly their X-ray diffraction, scanning electron microscope and transmission electron microscopy measurements clarify the satisfying composite structures. And their electrochemical experimental results demonstrate that the as-obtained CNT/Co and CNF/Co composites have excellent electrochemical hydrogen storage reversibility and considerably high storage capacities of 717.3 mAh g(-1) (2.62 wt% hydrogen) and 739.4 mAh g(-1) (2.70 wt% hydrogen) under room temperature and ambient pressure, which are much higher than the capacities of individual CNT (29.9 mAh g(-1), 0.11 wt% hydrogen) and CNF (49.0 mAh g(-1), 0.18 wt% hydrogen) measured in this work. Furthermore their hydrogen storage processes and the mechanism have also been investigated, in which the quasi-reversible CNT (CNF)/Co <-> CNT (CNF)/Co-H-x reaction is the dominant cycle process. (C) 2014 Elsevier B.V. All rights reserved.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000332436400041&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Electrochemistry; Energy & Fuels; SCI(E); EI; 5; ARTICLE; gaopeng@hrbeu.edu.cn; chenyujin@hrbeu.edu.cn; yangpiaoping@hrbeu.edu.cn; 318-324; 255
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/213951]
专题	化学与分子工程学院
推荐引用方式 GB/T 7714	Chang, Cheng,Gao, Peng,Bao, Di,et al. Ball-milling preparation of one-dimensional Co-carbon nanotube and Co-carbon nanofiber core/shell nanocomposites with high electrochemical hydrogen storage ability[J]. 电源杂志,2014.
APA	Chang, Cheng.,Gao, Peng.,Bao, Di.,Wang, Longqiang.,Wang, Ying.,...&Yang, Piaoping.(2014).Ball-milling preparation of one-dimensional Co-carbon nanotube and Co-carbon nanofiber core/shell nanocomposites with high electrochemical hydrogen storage ability.电源杂志.
MLA	Chang, Cheng,et al."Ball-milling preparation of one-dimensional Co-carbon nanotube and Co-carbon nanofiber core/shell nanocomposites with high electrochemical hydrogen storage ability".电源杂志 (2014).