3D self-supporting heterostructure NiCo-LDH/ZnO/CC electrode for flexible high-performance supercapacitor

doi:10.1016/j.jallcom.2020.158275

	3D self-supporting heterostructure NiCo-LDH/ZnO/CC electrode for flexible high-performance supercapacitor
	Xiong, Haotian 1; Liu, Lianlian 1; Fang, Liang 1,2; Wu, Fang 1; Zhang, Shufang3 ; Luo, Haijun 4; Tong, Cunzhu 2; Hu, Baoshan 5; Zhou, Miao 6
	2021-03-15
发表期刊	JOURNAL OF ALLOYS AND COMPOUNDS
ISSN	0925-8388
EISSN	1873-4669
卷号	857
摘要	Two kinds of nanostructured ZnO, namely nanorods (ZnO NR) and nanoflakes (ZnO NF) were first prepared on conductive flexible carbon cloth (CC) by a hydrothermal route. Then nickel cobalt layered double hydroxide (NiCo-LDH) nanoflakes were directly hydrothermally deposited on them to construct three-dimensional (3D) self-supporting heterostructure NiCo-LDH/ZnO NR/CC and NiCo-LDH/ZnO NF/CC flexible electrodes. The effects of different nanostructured ZnO on morphology, structure and electrochemical performance of NiCo-LDH/ZnO/CC composite materials were investigated. It is found that NiCo-LDH nanoflakes grown on ZnO NF/CC substrate are more compact and uniform than those on ZnO NR/CC substrate. Moreover, NiCo-LDH/ZnO NF/CC electrode presents better electrochemical properties than NiCo-LDH/ZnO NR/CC electrode with 2.6 times higher specific capacitance (1577.6 F g−1 at 1 A g−1), 2.2 times better rate capability, and 1.5 time greater cycle stability, which may be attributed to the larger contact area and more redox-active sites provided by the NiCo-LDH NFs grown on ZnO NFs. Furthermore, the as-assembled solid-state flexible NiCo-LDH/ZnO NF//AC (active carbon) asymmetric supercapacitor (ASC) delivers a maximal energy density of 51.39 Wh kg−1 (800 W kg−1) with a high operating window of 1.6 V, and exhibits great cyclic stability with 87.3% capacitance retaining after 1000 cycles, which is higher than many reported ASCs. Finally, two packaged ASCs in series successfully lighted a red light-emitting diode (LED, 2.2 V/20 mA), evincing the potentiality of practical application. © 2020 Elsevier B.V.
关键词	Capacitance Carbon Cobalt compounds Cobalt deposits Composite structures Electrochemical electrodes II VI semiconductors Morphology Nanorods Oxide minerals Redox reactions Supercapacitor Zinc oxide Asymmetric supercapacitor Electrochemical performance Flexible electrodes Hydrothermal routes Layered double hydroxides Nanostructured ZnO Specific capacitance Threedimensional (3-d)
DOI	10.1016/j.jallcom.2020.158275
收录类别	EI ; SCIE
语种	英语
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:000610867800137
出版者	Elsevier Ltd
EI入藏号	20210209744922
EI分类号	408.2 Structural Members and Shapes ; 482.2 Minerals ; 504.3 Heavy Metal Mines ; 701.1 Electricity: Basic Concepts and Phenomena ; 761 Nanotechnology ; 802.2 Chemical Reactions ; 804 Chemical Products Generally ; 804.2 Inorganic Compounds ; 933 Solid State Physics ; 951 Materials Science
原始文献类型	Journal article (JA)
出版地	LAUSANNE
引用统计	被引频次：40[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	https://ir.cqcet.edu.cn/handle/39TD4454/3157
专题	人工智能与大数据学院
作者单位	1.State Key Laboratory of Power Transmission Equipment & System Safety and New Technology, Chongqing Key Laboratory of Soft Condensed Matter Physics and Smart Materials, College of Physics, Chongqing University, Chongqing; 400044, China; 2.State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, No. 3888 Dong Nanhu Road, Changchun; Jilin; 130033, China; 3.College of Software, Chongqing College of Electronic Engineering, Chongqing; 401331, China; 4.Key Laboratory on Optoelectronic Functional Materials, College of Physics and Electronic Engineering, Chongqing Normal University, Chongqing; 401331, China; 5.College of Chemistry and Chemical Engineering, Chongqing University, Chongqing; 401331, China; 6.Key Laboratory of Optoelectronic Technology and Systems of the Education Ministry of China, College of Optoelectronic Engineering, Chongqing University, Chongqing; 400044, China
推荐引用方式 GB/T 7714	Xiong, Haotian,Liu, Lianlian,Fang, Liang,et al. 3D self-supporting heterostructure NiCo-LDH/ZnO/CC electrode for flexible high-performance supercapacitor[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2021,857.
APA	Xiong, Haotian.,Liu, Lianlian.,Fang, Liang.,Wu, Fang.,Zhang, Shufang.,...&Zhou, Miao.(2021).3D self-supporting heterostructure NiCo-LDH/ZnO/CC electrode for flexible high-performance supercapacitor.JOURNAL OF ALLOYS AND COMPOUNDS,857.
MLA	Xiong, Haotian,et al."3D self-supporting heterostructure NiCo-LDH/ZnO/CC electrode for flexible high-performance supercapacitor".JOURNAL OF ALLOYS AND COMPOUNDS 857(2021).