中文

Polypyrrole-Modified NH 4 NiPO4·H2O Nanoplate Arrays on Ni Foam for Efficient Electrode in Electrochemical Capacitors.

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  • Release time:2021-02-28

  • Impact Factor:7.632

  • DOI number:10.1021/acssuschemeng.6b01347

  • Journal:ACS SUSTAINABLE CHEMISTRY & ENGINEERING

  • Key Words:NICKEL-FOAM; NANOWIRE ARRAYS; ASYMMETRICAL SUPERCAPACITOR; NANOSHEET ARRAYS; PERFORMANCE; PHOSPHORIZATION; CONSTRUCTION; FABRICATION; NANOFLAKES; MICRORODS

  • Abstract:The growth of active materials on Ni foam was proved to be an effective strategy to enhance redox reactions for electrochemical capacitors. But for NH4NiPO4 center dot H2O materials, a uniform nanostructure on Ni foam has not been achieved. Here, the NH4NiPO4 center dot H2O nanoplate arrays on Ni foam are fabricated by a facile solvothermal method. To further promote the transitions of current carries and benefit the electrochemical reactions, the surfaces of NH4NiPO4 center dot H2O nanoplate arrays were modified by a thin layer of polypyrrole through an in situ chemical polymerization method. The polypyrrole-modified NH4NiPO4 center dot H2O nanoplate arrays on Ni foam showed much enhanced specific capacitance in comparison with the bare NH4NiPO4 center dot H2O nanoplate arrays. When employing polypyrrole-modified NH4NiPO4 center dot H2O/Ni foam as a positive electrode and activated carbon as a negative electrode to assemble the asymmetric supercapacitor cells, favorable capacitance and cycling ability were achieved. Such a fabrication provides a feasible method to construct efficient electrodes for sustainable electrochemical energy storage.

  • Indexed by:Journal paper

  • Volume:4

  • Page Number:5578-5584

  • Translation or Not:no

  • Date of Publication:2016-10-10

  • Included Journals:SCI


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