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). |
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