Zn-doped CoS2 nanospheres embedded on two dimensional reduced graphene oxide nanosheets as anode materials for enhanced sodium-ion hybrid capacitors

doi:10.1007/s10854-022-08227-4

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	Zn-doped CoS2 nanospheres embedded on two dimensional reduced graphene oxide nanosheets as anode materials for enhanced sodium-ion hybrid capacitors
	Xu, Ying-Ge 2; Liu, Jian 2; Kong, Ling-Bin 1,2
刊名	Journal of Materials Science: Materials in Electronics
	2022-06-01
卷号	33 期号:16 页码:12819-12831
关键词	Anodes Electric conductivity Graphene Hybrid materials Metal ions Nanosheets Nanospheres Porous materials Reaction kinetics Sodium Supercapacitor Zinc compounds Anode material Electronic conductivity Graphene oxide nanosheet Hybrid capacitor Metal sulfides Rate capabilities Reduced graphene oxides Sodium ions Two-dimensional Zn-doped
ISSN号	0957-4522
DOI	10.1007/s10854-022-08227-4
英文摘要	Sodium-ion hybrid capacitors (SICs) combine two merits of high energy density of batteries and superior power density of supercapacitors. Currently, metal sulfides are potential anode materials for SICs owing to their high theory specific capacity. Nevertheless, metal sulfides with low electronic conductivity and sluggish reaction kinetics suffer from inferior rate capability and poor circulation stability as anodes. Therefore, improving electronic conductivity and Na+ diffusion kinetics for metal sulfides are some effective promotion strategies. Herein the Zn-doped CoS2 nanospheres embedded on two dimensional reduced graphene oxide nanosheets (Zn-CoS2/rGO) composites are prepared by a simple hydrothermal method. The optimized Zn-CoS2/rGO deliver high specific capacity of 544.3 mA h g−1 at specific current of 0.1 A g−1 after 100 cycles. Impressively, Zn-CoS2/rGO display an excellent rate capability of 286.8 and 226.1 mA h g−1 at 2000 and 5000 mA g−1, respectively. Galvanostatic intermittent titration technique (GITT) analysis demonstrates that Zn-CoS2/rGO composites possess higher diffusion coefficient than CoS2/rGO. The SICs assembled by Zn-CoS2/rGO anodes and Walnut shells-derived porous carbon cathodes exhibit outstanding specific energy and power. This work confirms that Zn-CoS2/rGO are promising anodes to prepare high-performance SICs. © 2022, The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.
WOS研究方向	Engineering ; Materials Science ; Physics
语种	英语
出版者	Springer
WOS记录号	WOS:000788931800002
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/158415]
专题	石油化工学院材料科学与工程学院
作者单位	1.School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou; 730050, China 2.State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, Lanzhou University of Technology, Lanzhou; 730050, China;
推荐引用方式 GB/T 7714	Xu, Ying-Ge,Liu, Jian,Kong, Ling-Bin. Zn-doped CoS2 nanospheres embedded on two dimensional reduced graphene oxide nanosheets as anode materials for enhanced sodium-ion hybrid capacitors[J]. Journal of Materials Science: Materials in Electronics,2022,33(16):12819-12831.
APA	Xu, Ying-Ge,Liu, Jian,&Kong, Ling-Bin.(2022).Zn-doped CoS2 nanospheres embedded on two dimensional reduced graphene oxide nanosheets as anode materials for enhanced sodium-ion hybrid capacitors.Journal of Materials Science: Materials in Electronics,33(16),12819-12831.
MLA	Xu, Ying-Ge,et al."Zn-doped CoS2 nanospheres embedded on two dimensional reduced graphene oxide nanosheets as anode materials for enhanced sodium-ion hybrid capacitors".Journal of Materials Science: Materials in Electronics 33.16(2022):12819-12831.