Band-gap shrinked NiO@Co3O4 nanotubes as high-performance supercapacitor electrodes

doi:10.1016/j.jallcom.2021.161463

IMR OpenIR

	Band-gap shrinked NiO@Co3O4 nanotubes as high-performance supercapacitor electrodes
	Chen, Feng 1; Chi, Yuchen 1; Zhang, Haifeng 2; Ma, Fei 3; Qin, Fengxiang 1
通讯作者	Qin, Fengxiang()
	2021-12-25
发表期刊	JOURNAL OF ALLOYS AND COMPOUNDS
ISSN	0925-8388
卷号	888 页码:11
摘要	Novel band-gap shrinked NiO@Co3O4 nanotube arrays on Ni foam have been fabricated via a two-step synthesis route. Hexagonal NiO nanotube arrays are obtained by electrodeposition of Ni nanoparticles onto ZnO nanoprisms followed by selective dissolution of ZnO. The inside and outside surfaces of the NiO nanotubes are homogeneously covered with Co3O4 nanosheets via hydrothermal treatment, which enlarges the surface area and accelerates electron transferring. Benefiting from the hierarchically hollow structure and the synergistic effects, the obtained NiO@Co3O4 nanotube arrays deliver a superior specific capacitance of 1769.2 F/g at 1 A/g and outstanding cycling stability (87.5% capacitance retention after 10,000 cycles at 20 A/g). Density functional theory calculations reveal that the disappearance of the band-gap of the NiO@Co3O4 composite is one intrinsic reason that the conductivity and the capacitive charge storage performance are enhanced significantly. The as-prepared NiO@Co3O4 nanotube arrays are highly promising electrodes for high-performance supercapacitors. (C) 2021 Elsevier B.V. All rights reserved.
关键词	Nanotube arrays Nanosheets Hybrid nanostructure Synergistic effect Band-gap Supercapacitor
资助者	Shi-changxu Innovation Center for Advanced Materials, Institute of Metal Research, Chinese Academy of Sciences ; National Natural Science Foundation of China ; Chinese Academy of Sciences ; Fundamental Research Funds for the Central Universities
DOI	10.1016/j.jallcom.2021.161463
收录类别	SCI
语种	英语
资助项目	Shi-changxu Innovation Center for Advanced Materials, Institute of Metal Research, Chinese Academy of Sciences ; National Natural Science Foundation of China[51790484] ; National Natural Science Foundation of China[51671106] ; Chinese Academy of Sciences[ZDBSLY-JSC023] ; Fundamental Research Funds for the Central Universities[30919011404]
WOS研究方向	Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000705337400003
出版者	ELSEVIER SCIENCE SA
引用统计	被引频次：27[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/166541
专题	中国科学院金属研究所
通讯作者	Qin, Fengxiang
作者单位	1.Nanjing Univ Sci & Technol, Sch Mat Sci & Engn, Nanjing 210094, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China 3.Xi An Jiao Tong Univ, State Key Lab Mech Behav Mat, Xian 710049, Peoples R China
推荐引用方式 GB/T 7714	Chen, Feng,Chi, Yuchen,Zhang, Haifeng,et al. Band-gap shrinked NiO@Co3O4 nanotubes as high-performance supercapacitor electrodes[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2021,888:11.
APA	Chen, Feng,Chi, Yuchen,Zhang, Haifeng,Ma, Fei,&Qin, Fengxiang.(2021).Band-gap shrinked NiO@Co3O4 nanotubes as high-performance supercapacitor electrodes.JOURNAL OF ALLOYS AND COMPOUNDS,888,11.
MLA	Chen, Feng,et al."Band-gap shrinked NiO@Co3O4 nanotubes as high-performance supercapacitor electrodes".JOURNAL OF ALLOYS AND COMPOUNDS 888(2021):11.