urchinlikenico2s4structuressynthesizedthroughaonestepsolvothermalprocessforhighperformancesupercapacitors

	urchinlikenico2s4structuressynthesizedthroughaonestepsolvothermalprocessforhighperformancesupercapacitors
	Hu Yan; Zhang Jie; Wang Di; Sun Jiangbo; Zhang Li; Liu Yanjie; Gao Shiqiu; Cui Yanbin
刊名	particuology
	2019
卷号	45 页码:66
ISSN号	1674-2001
英文摘要	Nickel cobalt sulfides (NiCo2S4) have attracted considerable attention as electrode materials for super capacitors. 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 agent and sulfur source for in-situ sulfuration, respectively. The urchin-like NiCo2S4 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 (1334 F/g at 0.5 A/g) and superior rate capability (78.1% of the original capacity from 0.5 to 20 A/g) in 6 M KOH aqueous solution. Furthermore, an asymmetric supercapacitor was assembled using NiCo2S4 as a positive electrode and activated carbon (AC) as a negative electrode. A NiCo2S4//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. (C) 2018 Chinese Society of Particuology and Institute of Process Engineering, Chinese Academy of Sciences. Published by Elsevier B.V. All rights reserved.
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/122111/32962]
专题	中国科学院过程工程研究所
作者单位	中国科学院过程工程研究所
推荐引用方式 GB/T 7714	Hu Yan,Zhang Jie,Wang Di,et al. urchinlikenico2s4structuressynthesizedthroughaonestepsolvothermalprocessforhighperformancesupercapacitors[J]. particuology,2019,45:66.
APA	Hu Yan.,Zhang Jie.,Wang Di.,Sun Jiangbo.,Zhang Li.,...&Cui Yanbin.(2019).urchinlikenico2s4structuressynthesizedthroughaonestepsolvothermalprocessforhighperformancesupercapacitors.particuology,45,66.
MLA	Hu Yan,et al."urchinlikenico2s4structuressynthesizedthroughaonestepsolvothermalprocessforhighperformancesupercapacitors".particuology 45(2019):66.