High energy ball-milling preparation of Co-B amorphous alloy with high   electrochemical hydrogen storage ability

doi:10.1016/j.jallcom.2012.06.008

CORC > 北京大学 > 化学与分子工程学院

	High energy ball-milling preparation of Co-B amorphous alloy with high electrochemical hydrogen storage ability
	Gao, Peng ; Yang, Shaoqiang ; Xue, Zhu ; Liu, Guangbo ; Zhang, Guoli ; Wang, Longqiang ; Li, Guobao ; Sun, Yuzeng ; Chen, Yujin
刊名	journal of alloys and compounds
	2012
关键词	Co-B alloy Ball-milling method Hydrogen storage Electrochemical performance ANODE MATERIALS BEHAVIORS BATTERIES PARTICLES TEMPERATURE COMPOSITES ELECTRODES CAPACITY POWDERS
DOI	10.1016/j.jallcom.2012.06.008
英文摘要	As a new type hydrogen storage material, Co-B hydrogen storage alloy was a hot research topic and has been paid increasing attention in recent years. In this work, a series of Co-B alloys with molar ratio of 1:1, 2:1 and 3:1 were synthesized by high energy ball-milling method. The phase, structure and morphology of the samples have been characterized by X-ray diffraction (XRD) and scanning electron microscope (SEM), which demonstrated that the samples ball-milled more than 5 h were mainly amorphous phase. Their electrochemical performance as electrochemical hydrogen storage material was investigated by galvanostatic charge-discharge process and cyclic voltammetry (CV) techniques. Electrochemical measurements showed that the Co-B alloys had excellent electrochemical hydrogen storage capacities and exhibited remarkable high rate discharge performance. Their electrochemical hydrogen storage capacity was 771 mAh/g, which was much higher than previous reports (238 mAh/g). Based on XRD and CV results, the exceptional electrochemical performances were suggested to arise from the electrochemical hydrogen storage reaction on the Co-B materials, which was brought about by the special amorphous structure and high chemical reactivity of the Co-B particles. (C) 2012 Elsevier B.V. All rights reserved.; Chemistry, Physical; Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering; SCI(E); EI; 5; ARTICLE; 90-96; 539
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/229766]
专题	化学与分子工程学院
推荐引用方式 GB/T 7714	Gao, Peng,Yang, Shaoqiang,Xue, Zhu,et al. High energy ball-milling preparation of Co-B amorphous alloy with high electrochemical hydrogen storage ability[J]. journal of alloys and compounds,2012.
APA	Gao, Peng.,Yang, Shaoqiang.,Xue, Zhu.,Liu, Guangbo.,Zhang, Guoli.,...&Chen, Yujin.(2012).High energy ball-milling preparation of Co-B amorphous alloy with high electrochemical hydrogen storage ability.journal of alloys and compounds.
MLA	Gao, Peng,et al."High energy ball-milling preparation of Co-B amorphous alloy with high electrochemical hydrogen storage ability".journal of alloys and compounds (2012).