Electrodeposition of nanostructured MnO2 electrode on three-dimensional nickel/silicon microchannel plates for miniature supercapacitors

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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  • Yuwei Xu
  • Shaohui Xu
  • Mai Li
  • Yiping Zhu
  • Lianwei Wang


Original languageEnglish
Pages (from-to)116-118
Journal / PublicationMaterials Letters
Online published13 Apr 2014
Publication statusPublished - 1 Jul 2014


Manganese-dioxide is electrodeposited on three-dimensional nickel/silicon microchannel plates (Si-MCPs) to produce miniature supercapacitors. The nanostructured MnO2 thin film can be clearly observed from the channels and largely contribute to the capacitance. The compositions and morphology are characterized by X-ray diffraction (XRD) and field emission scanning electron microscopy (FE-SEM). The electrochemical properties are investigated by cyclic voltammetry (CV), galvanostatic charging-discharging, and electrochemical impedance spectroscopy (EIS) in a neutral 1 M Na2SO4 solution which preserves the structure of the substrate. The capacitance is 0.961 F/cm2 or 323.1 F/g and the retention ratio is 91.1% after 1000 cycles thereby demonstrating the robustness and durability. © 2014 Elsevier B.V.

Research Area(s)

  • Deposition, Silicon microchannel plates (Si-MCPs), Supercapacitor, Thin films, Manganese dioxide (MnO2)

Citation Format(s)