Targeted synthesis of NiS and NiS2 nanoparticles for high−performance hybrid supercapacitor via a facile green solid−phase synthesis route

doi:10.1016/j.est.2020.101852

CORC > 兰州理工大学 > 兰州理工大学 > 石油化工学院

	Targeted synthesis of NiS and NiS2 nanoparticles for high−performance hybrid supercapacitor via a facile green solid−phase synthesis route
	Zhang, Jiwei; Zhang, Deyi; Yang, Binbin; Shi, Hao; Wang, Kunjie; Han, Lele; Wang, Shujuan; Wang, Yi
刊名	Journal of Energy Storage
	2020-12-01
卷号	32
关键词	Capacitance Electrodes Metal nanoparticles Morphology Nickel sulfates Porous materials Pyrites Sulfide minerals Sulfur compounds Supercapacitor Transition metals Ambient atmosphere High specific capacitances Hybrid supercapacitors Negative electrode Positive electrodes Specific capacitance Spherical morphologies Structural transitions
ISSN号	2352-152X
DOI	10.1016/j.est.2020.101852
英文摘要	Stimulated by the distinguished merits of solid−phase synthesis for nano−structural transition metal sulfides, herein we develop a novel solid−phase route for targetedly synthesizing NiS and NiS2 nanoparticles. Pure α−NiS and pyrite NiS2 nanoparticles are facilely synthesized by thermally treating a mixture of nickel formate and elemental sulfur powder in a sealed steel autoclave under ambient atmosphere. The obtained NiS and NiS2 nanoparticles exhibit a 3D network morphology constructed by the irregular nanoparticles with a diameter of no more than 200 nm and a well−dispersive nano−spherical morphology with an average diameter of ca 80 nm, respectively. Ascribing to the special nano morphology, the α−NiS and pyrite NiS2 nanoparticles exhibit a high specific capacitance of 875.5 F g−1 and 1072.6 F g−1 at a current density of 2 A g−1. The hybrid supercapacitor constructed by applying the obtained pyrite NiS2 nanoparticles as positive electrode and a porous carbon nanosheet as negative electrode exhibit a high specific capacitance of up to 152.3 F g−1 at a current density of 1 A g−1, and more than 83.7% of initial specific capacitance are retained after 10,000 cycles. A high specific energy of 54.20 Wh kg−1 is arrived at a specific power of 0.94 kW kg−1. © 2020 Elsevier Ltd
WOS研究方向	Energy & Fuels
语种	英语
出版者	Elsevier Ltd
WOS记录号	WOS:000599937300006
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/115095]
专题	石油化工学院
作者单位	College of Petrochemical Technology, Lanzhou University of Technology, Lanzhou; 730050, China
推荐引用方式 GB/T 7714	Zhang, Jiwei,Zhang, Deyi,Yang, Binbin,et al. Targeted synthesis of NiS and NiS2 nanoparticles for high−performance hybrid supercapacitor via a facile green solid−phase synthesis route[J]. Journal of Energy Storage,2020,32.
APA	Zhang, Jiwei.,Zhang, Deyi.,Yang, Binbin.,Shi, Hao.,Wang, Kunjie.,...&Wang, Yi.(2020).Targeted synthesis of NiS and NiS2 nanoparticles for high−performance hybrid supercapacitor via a facile green solid−phase synthesis route.Journal of Energy Storage,32.
MLA	Zhang, Jiwei,et al."Targeted synthesis of NiS and NiS2 nanoparticles for high−performance hybrid supercapacitor via a facile green solid−phase synthesis route".Journal of Energy Storage 32(2020).