Porous MnO2 nano whiskers bunch/activated carbon based composite electrodes for high energy density supercapacitor
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Date
2013
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Abstract
A simple room temperature method was used to synthesize Porous ?-MnO<inf>2</inf> nano whiskers bunch. The porous ?-MnO<inf>2</inf> /Activated carbon (AC) composites were prepared by very simple mechanical mixing method with varying amount of MnO<inf>2</inf>. A symmetric supercapacitor stack was fabricated using the prepared composite electrode material. The composite with 30% MnO<inf>2</inf> exhibit a maximum specific capacitance of 107 Fg-1 at 1 mAcm-2 in non-aqueous electrolyte. The corresponding energy density was found to be 8.35 Whkg-1. The electrode also exhibits excellent cyclic stability. © 2013 The Electrochemical Society.
Description
Keywords
Carbon based composites, Composite electrode, Cyclic stability, High energy densities, Mechanical mixing method, Non-aqueous electrolytes, Room temperature, Specific capacitance, Activated carbon, Manganese oxide, Nanowhiskers, Electrolytic capacitors
Citation
ECS Solid State Letters, 2013, 2, 11, pp. M61-M63