Electrochemical Properties of Activated Polyacrylonitrile/pitch Carbon Fibers Produced Using Electrospinning

The electrospinnability of pitch was improved by blending in a solution of polyacrylonitrile (PAN) resulting in the reduction of the average fiber diameter from 2000 to 750 nm. Activated carbon fibers (ACFs) derived by stabilization, carbonization and steam activation at 700, 800, and 900 ${^{\circ}...

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Veröffentlicht in:Bulletin of the Korean Chemical Society 2009, Vol.30 (9), p.1967-1972
Hauptverfasser: Kim, Bo-Hye, Bui, Nhu-Ngoc, Yang, Kap-Seung, dela Cruz, Marilou E, Ferraris, John P
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container_end_page 1972
container_issue 9
container_start_page 1967
container_title Bulletin of the Korean Chemical Society
container_volume 30
creator Kim, Bo-Hye
Bui, Nhu-Ngoc
Yang, Kap-Seung
dela Cruz, Marilou E
Ferraris, John P
description The electrospinnability of pitch was improved by blending in a solution of polyacrylonitrile (PAN) resulting in the reduction of the average fiber diameter from 2000 to 750 nm. Activated carbon fibers (ACFs) derived by stabilization, carbonization and steam activation at 700, 800, and 900 ${^{\circ}C}$ of the PAN/pitch electrospun fibers for 60 min were investigated as electrodes for supercapacitors. The Brunauer, Emmett, Teller (BET) specific surface area ranged from 732 to 1877 $m^2g^{-1}$ and the specific capacitance from 75.5 to 143.5 $Fg^{-1}$, depending on the activation conditions. Electrodes from the electrospun web activated at 900 ${^{\circ}C}$ exhibited a particularly quick response showing a high frequency of 5.5 Hz at a phase angle of ‒$45^o$ of the impedance spectroscopy.
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title Electrochemical Properties of Activated Polyacrylonitrile/pitch Carbon Fibers Produced Using Electrospinning
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