NiCo2O4 nanoneedle-nanosheet hybrid structure on CC substrate for high-performance flexible supercapacitors

doi:10.1016/j.jallcom.2022.163634

	NiCo2O4 nanoneedle-nanosheet hybrid structure on CC substrate for high-performance flexible supercapacitors
	Sun, Yuanli 1; Wu, Fang 1; He, Liping 1; Zhang, Shufang2 ; Luo, Haijun 3; Hu, Baoshan 4; Zhou, Miao 5; Fang, Liang 1
	2022-05-05
发表期刊	JOURNAL OF ALLOYS AND COMPOUNDS
ISSN	0925-8388
EISSN	1873-4669
卷号	902
摘要	In this paper, three different morphologies of NiCo2O4 nanoarrays, namely, nanosheet (S-NiCo2O4), nanoneedle (N-NiCo2O4) and their hybrid nanostructure (M-NiCo2O4) were successfully prepared on flexible carbon cloth (CC) by a hydrothermal method. The structures, surface morphologies and compositions of the samples were respectively characterized by XRD, SEM, EDS, and XPS, and the effect of NiCo2O4 morphologies on the electrochemical performances was systematically investigated. It is found that the M-NiCo2O4/CC electrode demonstrates the best supercapacitive performance among the three kinds of samples, typically its specific capacitance is 1347.4 F/g at 1 A/g (1509.1 F/cm2 at 1 mA/cm2), much higher than that of S-NiCo2O4 (938.4 F/g at 1 A/g) and N-NiCo2O4 (1022.4 F/g at 1 A/g). Meanwhile, the M-NiCo2O4/CC sample exhibits excellent rate capability (81.6%, from 1 A/g to 15 A/g) and cycling stability (92.4% retention after 10,000 cycles). In addition, an flexible solid-state asymmetric supercapacitor (ASC) with M-NiCo2O4/CC as positive electrode manifests great capacity retention (94% after 5000 cycles) and outstanding energy density of 41.7 Wh/kg at the power density of 750 W/kg. Moreover, the charge-discharge time shows no significant change after 2000 bends, demonstrating its application potential in the field of flexible SCs. The excellent performance is attributed to the unique hybrid porous structure of one-dimensional (1D) nanoneedles and two-dimensional (2D) nanosheets. © 2022 Elsevier B.V.
关键词	Electric discharges Electrodes Morphology Nanoneedles Nanosheets Nickel compounds Carbon cloths Flexible electrodes Hybrid nanostructures Hybrid structure Hydrothermal methods Morphology and composition Nanoarrays Performance SEM EDS XRD
DOI	10.1016/j.jallcom.2022.163634
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:000749756600001
出版者	Elsevier Ltd
EI入藏号	20220411491474
EI主题词	Supercapacitor
EI分类号	701.1 Electricity: Basic Concepts and Phenomena ; 704.1 Electric Components ; 761 Nanotechnology ; 931.2 Physical Properties of Gases, Liquids and Solids ; 933 Solid State Physics ; 951 Materials Science
原始文献类型	Journal article (JA)
出版地	LAUSANNE
WOS关键词	MORPHOLOGY CONTROL ; CARBON NANOTUBES ; NANOPARTICLES ; ELECTRODE ; CLOTH ; NANOSTRUCTURES ; NANOWIRES ; COBALTITE ; ARRAYS ; FOAM
引用统计	被引频次：24[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/39TD4454/10365
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.College of Software, Chongqing College of Electronic Engineering, Chongqing; 401331, China; 3.Key Laboratory on Optoelectronic Functional Materials, College of Physics and Electronic Engineering, Chongqing Normal University, Chongqing; 401331, China; 4.College of Chemistry and Chemical Engineering, Chongqing University, Chongqing; 401331, China; 5.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	Sun, Yuanli,Wu, Fang,He, Liping,et al. NiCo2O4 nanoneedle-nanosheet hybrid structure on CC substrate for high-performance flexible supercapacitors[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2022,902.
APA	Sun, Yuanli.,Wu, Fang.,He, Liping.,Zhang, Shufang.,Luo, Haijun.,...&Fang, Liang.(2022).NiCo2O4 nanoneedle-nanosheet hybrid structure on CC substrate for high-performance flexible supercapacitors.JOURNAL OF ALLOYS AND COMPOUNDS,902.
MLA	Sun, Yuanli,et al."NiCo2O4 nanoneedle-nanosheet hybrid structure on CC substrate for high-performance flexible supercapacitors".JOURNAL OF ALLOYS AND COMPOUNDS 902(2022).