Engineering Ultrathin Co(OH)(2) Nanosheets on Dandelion-like CuCo2O4 Microspheres for Binder-Free Supercapacitors

doi:10.1002/celc.201600661

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	Engineering Ultrathin Co(OH)(2) Nanosheets on Dandelion-like CuCo2O4 Microspheres for Binder-Free Supercapacitors
	Zhang, Yan 1; Liu, Hong 1; Huang, Ming 1,2; Zhang, Jun Ming 1; Zhang, Wei3 ; Dong, Fan 4; Zhang, Yu Xin 1
刊名	CHEMELECTROCHEM
	2017-03-01
卷号	4 期号:3 页码:721-727
关键词	CuCo2O4 Co(OH)(2) electrodeposition nanostructures supercapacitors
ISSN号	2196-0216
DOI	10.1002/celc.201600661
通讯作者	Huang, M ; Zhang, YX (reprint author), Chongqing Univ, Coll Mat Sci & Engn, Chongqing 400044, Peoples R China. ; Huang, M (reprint author), Ulsan Natl Inst Sci & Technol UNIST, Sch Mat Sci & Engn, Ulsan 44919, South Korea.
英文摘要	A stepwise synthetic approach is developed for large-scale growth of three-dimensional branched CuCo2O4@Co(OH)(2) core-shell structures on nickel foam as a high-performance supercapacitor electrode. The synthesis procedure involves the hydrothermal treatment of a bimetallic (Cu, Co) hydroxide precursor on a Ni foam substrate and subsequent thermal transformation to dandelion-like CuCo2O4 microspheres. The Co(OH)(2) shells are then coated onto the branches of as-prepared CuCo2O4 microspheres by using an electrodeposition method. The loading of Co(OH)(2) nanosheets is dependent on the electrodeposition time in Co(NO3)(2) solution. The resulting unique core-shell structure promotes fast electron and ion transport, large electroactive surface area, and excellent structural stability. As a result, superior electrochemical performance is achieved with a specific capacitance of 424Fg(-1) at a current density of 0.5Ag (-1), and good cycling performance (85.8% retention after 10000 cycles), suggesting its promising application in supercapacitors. These good electrochemical properties could be attributed to the synergic interaction of each component. In addition, the asymmetric supercapacitor exhibits an energy density of 19.2Whkg(-1) at a power density of 350Wkg(-1).
资助项目	National Natural Science Foundation of China[21576034] ; International S&T Cooperation Projects of Chongqing[CSTC2013gjhz90001] ; State Education Ministry ; Fundamental Research Funds for the Central Universities[106112016CDJZR135506] ; CAS Innovation Training Programs for Undergraduates[R52 A060Z16] ; Innovative Research Team of Chongqing[CXTDG201602014]
WOS研究方向	Electrochemistry
语种	英语
出版者	WILEY-V C H VERLAG GMBH
WOS记录号	WOS:000397473700038
内容类型	期刊论文
源URL	[http://119.78.100.138/handle/2HOD01W0/3523]
专题	科研公共服务平台
通讯作者	Huang, Ming; Zhang, Yu Xin
作者单位	1.Chongqing Univ, Coll Mat Sci & Engn, Chongqing 400044, Peoples R China 2.Ulsan Natl Inst Sci & Technol UNIST, Sch Mat Sci & Engn, Ulsan 44919, South Korea 3.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Key Lab Multiscale Mfg Technol, Chongqing 400714, Peoples R China 4.Chongqing Technol & Business Univ, Coll Environm & Resources, Chongqing Key Lab Catalysis & Funct Organ Mol, Engn Res Ctr Waste Oil Recovery Technol & Equipme, Chongqing 400067, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Yan,Liu, Hong,Huang, Ming,et al. Engineering Ultrathin Co(OH)(2) Nanosheets on Dandelion-like CuCo2O4 Microspheres for Binder-Free Supercapacitors[J]. CHEMELECTROCHEM,2017,4(3):721-727.
APA	Zhang, Yan.,Liu, Hong.,Huang, Ming.,Zhang, Jun Ming.,Zhang, Wei.,...&Zhang, Yu Xin.(2017).Engineering Ultrathin Co(OH)(2) Nanosheets on Dandelion-like CuCo2O4 Microspheres for Binder-Free Supercapacitors.CHEMELECTROCHEM,4(3),721-727.
MLA	Zhang, Yan,et al."Engineering Ultrathin Co(OH)(2) Nanosheets on Dandelion-like CuCo2O4 Microspheres for Binder-Free Supercapacitors".CHEMELECTROCHEM 4.3(2017):721-727.