The synergistic effect of carbon nanotubes and graphitic carbon nitride on the enhanced supercapacitor performance of cobalt diselenide-based composites

doi:10.1039/d1nj02533c

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	The synergistic effect of carbon nanotubes and graphitic carbon nitride on the enhanced supercapacitor performance of cobalt diselenide-based composites
	Li, Mingjie 1; Zheng, Xuan 1; Xie, Lixiang 1; Yu, Youjun 2; Jiang, Jinlong 1,3
刊名	NEW JOURNAL OF CHEMISTRY
	2021-08-28
卷号	45 期号:32 页码:14808-14814
关键词	Carbon nanotubes Carbon nitride Charge transfer Cobalt compounds Cobalt deposits Composite structures Nanosheets Porous materials Supercapacitor Transition metals Asymmetric supercapacitor Capacitive performance Electrode material High energy densities Multi dimensional Spatial structure Synergistic effect Two-step hydrothermal method
ISSN号	1144-0546
DOI	10.1039/d1nj02533c
英文摘要	Recently, transition metal selenides have been investigated extensively as promising electrode materials for high-performance supercapacitors. Herein, multi-component CoSe2/CNTs@g-C3N4 composites are prepared using a two-step hydrothermal method by incorporating one-dimensional CNTs and two-dimensional g-C3N4 nanosheets to form a network-like structure. The CoSe2/CNTs@g-C3N4 composite with a mass ratio of 1 : 3 (CNTs to g-C3N4) shows an ultra-high specific capacity of 445.4 mA h g(-1) (3563.0 F g(-1)) at 1 A g(-1), which is more than 2 times that of pure CoSe2. The assembled asymmetric supercapacitor based on CoSe2/CNTs@g-C3N4 delivers a high energy density of 77.1 W h kg(-1) at 850 W kg(-1). The striking capacitive performance is ascribed to the multi-dimensional synergistic contribution of two kinds of carbon materials to the electric conductivity and spatial structure of the composites, involving the improved charge transfer due to connecting g-C3N4 and the active CoSe2 by the high conductive CNT bridges, and the short ion diffusion pathways on the porous carbon framework constructed by g-C3N4 nanosheets with the assistance of CNTs.
WOS研究方向	Chemistry
语种	英语
出版者	ROYAL SOC CHEMISTRY
WOS记录号	WOS:000680103200001
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/148994]
专题	理学院
作者单位	1.Lanzhou Univ Technol, Sch Sci, Dept Phys, Lanzhou 730050, Peoples R China; 2.Lanzhou City Univ, Sch Bailie Mech Engn, Lanzhou 730050, Peoples R China; 3.Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Li, Mingjie,Zheng, Xuan,Xie, Lixiang,et al. The synergistic effect of carbon nanotubes and graphitic carbon nitride on the enhanced supercapacitor performance of cobalt diselenide-based composites[J]. NEW JOURNAL OF CHEMISTRY,2021,45(32):14808-14814.
APA	Li, Mingjie,Zheng, Xuan,Xie, Lixiang,Yu, Youjun,&Jiang, Jinlong.(2021).The synergistic effect of carbon nanotubes and graphitic carbon nitride on the enhanced supercapacitor performance of cobalt diselenide-based composites.NEW JOURNAL OF CHEMISTRY,45(32),14808-14814.
MLA	Li, Mingjie,et al."The synergistic effect of carbon nanotubes and graphitic carbon nitride on the enhanced supercapacitor performance of cobalt diselenide-based composites".NEW JOURNAL OF CHEMISTRY 45.32(2021):14808-14814.