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    Supercapacitors Based on Spider Nest–Shaped Nickel Foam Electrodes Operating in Seawater

    Source: Journal of Electrochemical Energy Conversion and Storage:;2023:;volume( 021 ):;issue: 003::page 31008-1
    Author:
    Li, Haiying
    ,
    Hui, Yuchen
    ,
    Xia, Zunbin
    ,
    Wang, Huixin
    DOI: 10.1115/1.4063612
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: An environmental-friendly supercapacitor based on aqueous electrolyte was fabricated. Electrodes with conductive spider nest–shaped three-dimensional (3D) porous structures were prepared for the assembly of symmetric supercapacitors. The nickel foam was modified by multiwalled carbon nanotubes and β-cyclodextrin. The construction of the spider nest was stabilized via the chemical bond inside carbon nanotubes, π–π stack effects among carbon nanotubes, and physical adsorption between nickel foam and carbon nanotubes substrate. The role of β-cyclodextrin is a dispersant to prevent agglomeration of carbon nanotubes, thereby enhancing electroactive surface area of nickel foam and improving the specific capacitance of the electrodes. Furthermore, the electrodes exhibited excellent rate capability. The obtained symmetrical supercapacitors exhibited an excellent power density of 17,561.3 W kg−1, a good specific capacitance of 398.8 F g−1, and an energy density of 154.8 Wh kg−1 for 4000 cycles with outstanding cycling stability. In addition, the specific capacitance, energy density, and power density of the supercapacitor operating in seawater were found to be 100.2 F g−1, 17.8 Wh kg−1, and 2568 Wh kg−1, respectively, for 3000 cycles. Overall, our findings indicate that the supercapacitor could stably operate in seawater and shows potential for use as an ecofriendly power supply to marine engineering equipment.
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      Supercapacitors Based on Spider Nest–Shaped Nickel Foam Electrodes Operating in Seawater

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4295451
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    • Journal of Electrochemical Energy Conversion and Storage

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    contributor authorLi, Haiying
    contributor authorHui, Yuchen
    contributor authorXia, Zunbin
    contributor authorWang, Huixin
    date accessioned2024-04-24T22:33:48Z
    date available2024-04-24T22:33:48Z
    date copyright10/26/2023 12:00:00 AM
    date issued2023
    identifier issn2381-6872
    identifier otherjeecs_21_3_031008.pdf
    identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4295451
    description abstractAn environmental-friendly supercapacitor based on aqueous electrolyte was fabricated. Electrodes with conductive spider nest–shaped three-dimensional (3D) porous structures were prepared for the assembly of symmetric supercapacitors. The nickel foam was modified by multiwalled carbon nanotubes and β-cyclodextrin. The construction of the spider nest was stabilized via the chemical bond inside carbon nanotubes, π–π stack effects among carbon nanotubes, and physical adsorption between nickel foam and carbon nanotubes substrate. The role of β-cyclodextrin is a dispersant to prevent agglomeration of carbon nanotubes, thereby enhancing electroactive surface area of nickel foam and improving the specific capacitance of the electrodes. Furthermore, the electrodes exhibited excellent rate capability. The obtained symmetrical supercapacitors exhibited an excellent power density of 17,561.3 W kg−1, a good specific capacitance of 398.8 F g−1, and an energy density of 154.8 Wh kg−1 for 4000 cycles with outstanding cycling stability. In addition, the specific capacitance, energy density, and power density of the supercapacitor operating in seawater were found to be 100.2 F g−1, 17.8 Wh kg−1, and 2568 Wh kg−1, respectively, for 3000 cycles. Overall, our findings indicate that the supercapacitor could stably operate in seawater and shows potential for use as an ecofriendly power supply to marine engineering equipment.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleSupercapacitors Based on Spider Nest–Shaped Nickel Foam Electrodes Operating in Seawater
    typeJournal Paper
    journal volume21
    journal issue3
    journal titleJournal of Electrochemical Energy Conversion and Storage
    identifier doi10.1115/1.4063612
    journal fristpage31008-1
    journal lastpage31008-9
    page9
    treeJournal of Electrochemical Energy Conversion and Storage:;2023:;volume( 021 ):;issue: 003
    contenttypeFulltext
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