Fabrication and characterization of flexible and high capacitance supercapacitors based on MnO2/CNT/papers

Yu Jin Kang, Byungwoo Kim, Haegeun Chung, Woong Kim

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71 Citations (Scopus)

Abstract

Flexible paper-based supercapacitors were fabricated using carbon nanotubes (CNTs) and manganese oxides (MnO2), and their electrochemical properties were characterized in a three-electrode system. CNTs were synthesized via water-assisted chemical vapor deposition (CVD) and dispersed in water using the surfactant sodium dodecylbenzenesulfonate (SDBS). The solution containing dispersed CNTs was simply coated on papers by drop-dry method. MnO2 was then electrochemically deposited on the CNT-coated papers. The MnO 2/CNT/paper supercapacitors showed high specific capacitance of 540 F/g. Specific energy and specific power were 20 Wh/kg and 1.5 kW/kg, respectively, at current density of 5 A/g in 0.1 M sodium sulfate (Na 2SO4) aqueous solution. Demonstrated high capacitance of the paper-based electrochemical capacitor makes it a promising candidate for flexible and low-cost energy storage device applications.

Original languageEnglish
Pages (from-to)2510-2514
Number of pages5
JournalSynthetic Metals
Volume160
Issue number23-24
DOIs
Publication statusPublished - 2010 Dec 1

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Keywords

  • Carbon nanotubes
  • Flexible
  • Manganese oxides
  • Papers
  • Supercapacitors

ASJC Scopus subject areas

  • Mechanical Engineering
  • Mechanics of Materials
  • Materials Chemistry
  • Metals and Alloys
  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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