Urchin-like NiCo2S4 structures synthesized through a one-step solvothermal process for high-performance supercapacitors

	Urchin-like NiCo2S4 structures synthesized through a one-step solvothermal process for high-performance supercapacitors
	Yan Hu 1; Jie Zhang 1; Di Wang 1; Jiangbo Sun 1; Li Zhang 1; Yanjie Liu 1; Shiqiu Gao 1; Yanbin Cui 1
刊名	颗粒学报:英文版
	2019
卷号	000 期号:004 页码:66
关键词	NiCo2S4 PEG Asymmetric supercapacitor Urchin-like structure High specific capacitance
ISSN号	1674-2001
英文摘要	Nickel cobalt sulfides (MCo2S4) have attracted considerable attention as electrode materials for supercapacitors. Herein, a sea-urchin-like NiCo2S4 material was synthesized through a one-step solvothermal process. Polyethylene glycol (PEG) 200 and thiourea were used as a shape-control age nt and sulfur source for in-s让u sulfuration, respectively. The urchin-like NiC02S4 was characterized by X-ray powder diffraction, scanning electron microscopy, Brunauer-Emmett-Teller surface area, and electrochemical measurements. The resulting NiCo2S4 with ion diffusion-favored structure demonstrated remarkable electrochemical characteristics for supercapacitor with a high specific capacitance (1334F/g at 0.5 A/g) and superior rate capability (78.1% of the original capacity from 0.5 to 20 A/g) in 6M KOH aqueous solution. Furthermore, an asymmetric supercapacitor was assembled using NiCo2S4 as a positive electrode and activated carb on (AC) as a n egative electrode. A NiCo2Sj/AC device exhibited a high energy density of 37.32 Wh/kg at a power density of 317.8 W/kg with capacity retention of 91.9% and up to 2000 charge/discharge cycles at 3 A/g. The results demonstrate that the sea-urchin-like NiCo2S4 has potential applications in supercapacitors.
资助项目	[Fund of State Key Laboratory of Multiphase Complex Systems] ; [Center for Mesoscience, Institute of Process Engineering, Chinese Academy of Sciences]
语种	英语
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/44612]
专题	中国科学院过程工程研究所
作者单位	1.中国科学院过程工程研究所 2.中国科学院大学
推荐引用方式 GB/T 7714	Yan Hu,Jie Zhang,Di Wang,et al. Urchin-like NiCo2S4 structures synthesized through a one-step solvothermal process for high-performance supercapacitors[J]. 颗粒学报:英文版,2019,000(004):66.
APA	Yan Hu.,Jie Zhang.,Di Wang.,Jiangbo Sun.,Li Zhang.,...&Yanbin Cui.(2019).Urchin-like NiCo2S4 structures synthesized through a one-step solvothermal process for high-performance supercapacitors.颗粒学报:英文版,000(004),66.
MLA	Yan Hu,et al."Urchin-like NiCo2S4 structures synthesized through a one-step solvothermal process for high-performance supercapacitors".颗粒学报:英文版 000.004(2019):66.