A promising supercapacitor electrode material of CuBi2O4 hierarchical microspheres synthesized via a coprecipitation route

doi:10.1016/j.jallcom.2016.05.201

CORC > 兰州理工大学 > 兰州理工大学 > 理学院

	A promising supercapacitor electrode material of CuBi2O4 hierarchical microspheres synthesized via a coprecipitation route
	Zhang, Y. C.1; Yang, H.1; Wang, W. P.2; Zhang, H. M.1; Li, R. S.1; Wang, X. X.1; Yu, R. C.2
刊名	JOURNAL OF ALLOYS AND COMPOUNDS
	2016-11-05
卷号	684 页码:707-713
关键词	CuBi2O4 hierarchical microspheres Coprecipitation method Electrode material Supercapacitor
ISSN号	0925-8388
DOI	10.1016/j.jallcom.2016.05.201
英文摘要	CuBi2O4 hierarchical microspheres are synthesized via a coprecipitation method, where the effect of the NaOH concentration in precursor solution on the product morphology is investigated. At n(NaOH) = 1 M, irregular microspheres of 0.5-1 mu m are produced. With increase in the concentration of NaOH, the microspheres grow bigger in size and more regular in morphology. When the NaOH concentration is increased up to 6 M, regular microspheres of 4-6 mu m in diameter are obtained. These microspheres are constructed from nanorods with 30-60 nm in diameter and 200-400 nm in length via the hierarchical self-assembly process. The electrochemical performances of the as-prepared samples are investigated by cyclic voltammetry, electrochemical impedance spectroscopy and galvanostatic charge-discharge. It is demonstrated that the sample composed of 0.5-1 mu m microspheres exhibits the highest specific capacity, reaching about 1895 F g(-1) in a 2 M KOH electrolyte at a measured current density of 1 A g(-1). This value is larger than the specific capacity for most transition metal oxides. Due to its excellent electrochemical performance, CuBi2O4 could find a promising application as the supercapacitor electrode material. (C) 2016 Elsevier B.V. All rights reserved.
资助项目	Hongliu Outstanding Talents Foundation of Lanzhou University of Technology[J201205]
WOS研究方向	Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	ELSEVIER SCIENCE SA
WOS记录号	WOS:000379792800098
状态	已发表
内容类型	期刊论文
源URL	[http://119.78.100.223/handle/2XXMBERH/33543]
专题	理学院
通讯作者	Yang, H.
作者单位	1.Lanzhou Univ Technol, Sch Sci, Lanzhou 730050, Peoples R China 2.Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Y. C.,Yang, H.,Wang, W. P.,et al. A promising supercapacitor electrode material of CuBi2O4 hierarchical microspheres synthesized via a coprecipitation route[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2016,684:707-713.
APA	Zhang, Y. C..,Yang, H..,Wang, W. P..,Zhang, H. M..,Li, R. S..,...&Yu, R. C..(2016).A promising supercapacitor electrode material of CuBi2O4 hierarchical microspheres synthesized via a coprecipitation route.JOURNAL OF ALLOYS AND COMPOUNDS,684,707-713.
MLA	Zhang, Y. C.,et al."A promising supercapacitor electrode material of CuBi2O4 hierarchical microspheres synthesized via a coprecipitation route".JOURNAL OF ALLOYS AND COMPOUNDS 684(2016):707-713.