Porous Ultrathin NiSe Nanosheet Networks on Nickel Foam for High-Performance Hybrid Supercapacitors

Dengfeng Yu, Zhuo Li, Gongyuan Zhao, Hong Zhang, Hüsnü Aslan, Jiwei Li, Feifei Sun, Lin Zhu, Baosheng Du, Bin Yang, Wenwu Cao, Ye Sun, Flemming Besenbacher, Miao Yu

Research output: Contribution to journalArticle

Abstract

Transition metal selenides (TMSs) with excellent electrochemical activity and high intrinsic electrical conductivity have attracted considerable attention owing to their potential use in energy storage devices. However, the low energy densities of the reported TMSs, which originate from the small active surface area and poor electrolyte ion mobility, substantially restrict their application potential. In this work, porous ultrathin nickel selenide nanosheet networks (NiSe NNs) on nickel foam are fabricated by using a novel, facile method, that is, selenylation/pickling of the pre-formed manganese-doped α-Ni(OH)2. Removal of Mn resulted in NNs with a highly porous structure. The 3D framework of the NNs and the inherent nature of the NiSe affords high ion mobility, abundant accessible activated sites, vigorous electrochemical activity, and low resistance. One of the highest specific capacities of TMSs ever reported, that is, 443 mA h g−1 (807 μAh cm−2) at 3.0 A g−1, is achieved with the NNs as electrodes. The assembled NiSe NNs//porous carbon hybrid supercapacitor delivers a high energy density of 66.6 Wh kg−1 at a power density of 425 W kg−1, with excellent cycling stability. This work provides a new strategy for the production of novel electrode materials that can be applied in high-performance hybrid supercapacitors, and a fresh pathway towards commercial applications of hybrid supercapacitors based on TMS electrodes.

Original languageEnglish (US)
Pages (from-to)260-266
Number of pages7
JournalChemSusChem
Volume13
Issue number1
DOIs
StatePublished - Jan 9 2020

Fingerprint

Nanosheets
transition element
Nickel
foam
Transition metals
Foams
nickel
electrode
Electrodes
Ions
Pickling
ion
Manganese
Energy storage
electrolyte
Electrolytes
electrical conductivity
energy
manganese
Carbon

All Science Journal Classification (ASJC) codes

  • Environmental Chemistry
  • Chemical Engineering(all)
  • Materials Science(all)
  • Energy(all)

Cite this

Yu, Dengfeng ; Li, Zhuo ; Zhao, Gongyuan ; Zhang, Hong ; Aslan, Hüsnü ; Li, Jiwei ; Sun, Feifei ; Zhu, Lin ; Du, Baosheng ; Yang, Bin ; Cao, Wenwu ; Sun, Ye ; Besenbacher, Flemming ; Yu, Miao. / Porous Ultrathin NiSe Nanosheet Networks on Nickel Foam for High-Performance Hybrid Supercapacitors. In: ChemSusChem. 2020 ; Vol. 13, No. 1. pp. 260-266.
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abstract = "Transition metal selenides (TMSs) with excellent electrochemical activity and high intrinsic electrical conductivity have attracted considerable attention owing to their potential use in energy storage devices. However, the low energy densities of the reported TMSs, which originate from the small active surface area and poor electrolyte ion mobility, substantially restrict their application potential. In this work, porous ultrathin nickel selenide nanosheet networks (NiSe NNs) on nickel foam are fabricated by using a novel, facile method, that is, selenylation/pickling of the pre-formed manganese-doped α-Ni(OH)2. Removal of Mn resulted in NNs with a highly porous structure. The 3D framework of the NNs and the inherent nature of the NiSe affords high ion mobility, abundant accessible activated sites, vigorous electrochemical activity, and low resistance. One of the highest specific capacities of TMSs ever reported, that is, 443 mA h g−1 (807 μAh cm−2) at 3.0 A g−1, is achieved with the NNs as electrodes. The assembled NiSe NNs//porous carbon hybrid supercapacitor delivers a high energy density of 66.6 Wh kg−1 at a power density of 425 W kg−1, with excellent cycling stability. This work provides a new strategy for the production of novel electrode materials that can be applied in high-performance hybrid supercapacitors, and a fresh pathway towards commercial applications of hybrid supercapacitors based on TMS electrodes.",
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Yu, D, Li, Z, Zhao, G, Zhang, H, Aslan, H, Li, J, Sun, F, Zhu, L, Du, B, Yang, B, Cao, W, Sun, Y, Besenbacher, F & Yu, M 2020, 'Porous Ultrathin NiSe Nanosheet Networks on Nickel Foam for High-Performance Hybrid Supercapacitors', ChemSusChem, vol. 13, no. 1, pp. 260-266. https://doi.org/10.1002/cssc.201901766

Porous Ultrathin NiSe Nanosheet Networks on Nickel Foam for High-Performance Hybrid Supercapacitors. / Yu, Dengfeng; Li, Zhuo; Zhao, Gongyuan; Zhang, Hong; Aslan, Hüsnü; Li, Jiwei; Sun, Feifei; Zhu, Lin; Du, Baosheng; Yang, Bin; Cao, Wenwu; Sun, Ye; Besenbacher, Flemming; Yu, Miao.

In: ChemSusChem, Vol. 13, No. 1, 09.01.2020, p. 260-266.

Research output: Contribution to journalArticle

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T1 - Porous Ultrathin NiSe Nanosheet Networks on Nickel Foam for High-Performance Hybrid Supercapacitors

AU - Yu, Dengfeng

AU - Li, Zhuo

AU - Zhao, Gongyuan

AU - Zhang, Hong

AU - Aslan, Hüsnü

AU - Li, Jiwei

AU - Sun, Feifei

AU - Zhu, Lin

AU - Du, Baosheng

AU - Yang, Bin

AU - Cao, Wenwu

AU - Sun, Ye

AU - Besenbacher, Flemming

AU - Yu, Miao

PY - 2020/1/9

Y1 - 2020/1/9

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