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Title: Porous MnO2 nano whiskers bunch/activated carbon based composite electrodes for high energy density supercapacitor
Authors: Aravinda, L.S.
Udaya, Bhat, K.
Bhat, B.R.
Issue Date: 2013
Citation: ECS Solid State Letters, 2013, Vol.2, 11, pp.M61-M63
Abstract: A simple room temperature method was used to synthesize Porous ?-MnO2 nano whiskers bunch. The porous ?-MnO2 /Activated carbon (AC) composites were prepared by very simple mechanical mixing method with varying amount of MnO2. A symmetric supercapacitor stack was fabricated using the prepared composite electrode material. The composite with 30% MnO2 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.
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