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Issue 19, 2013
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Activated carbon from phenolic resin with controlled mesoporosity for an electric double-layer capacitor (EDLC)

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Abstract

Activated carbon materials are prepared from phenolic resin precursors by physical activation to fabricate electrodes for electric double-layer capacitors (EDLCs). Pore size and surface area of the carbon materials are controlled during the synthesizing process and after the carbonization through activation in a CO2 atmosphere to different levels of burn-off. The resultant carbon materials were evaluated as EDLC electrodes, using electrochemical impedance spectroscopy (EIS) and galvanostatic charge–discharge (GCD) measurements with the organic electrolyte of spiro-(1,1′)-bipyrrolidinium tetrafluoroborate in propylene carbonate, SBPBF4/PC. The results of the study showed that the capacitance of carbon materials, as well as energy density of the EDLC cells, increased by increasing the level of burn-off (activation). The 46% activated carbon gave a capacitance of ∼160 F g−1 and an energy density of ∼35 W h kg−1, at a current density of 1 mA cm−2. The long term cycling tests showed high cycling stability of these carbon materials.

Graphical abstract: Activated carbon from phenolic resin with controlled mesoporosity for an electric double-layer capacitor (EDLC)

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Publication details

The article was received on 24 Dec 2012, accepted on 18 Mar 2013 and first published on 18 Mar 2013


Article type: Paper
DOI: 10.1039/C3TA01638B
J. Mater. Chem. A, 2013,1, 6037-6042

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    Activated carbon from phenolic resin with controlled mesoporosity for an electric double-layer capacitor (EDLC)

    C. Lei, N. Amini, F. Markoulidis, P. Wilson, S. Tennison and C. Lekakou, J. Mater. Chem. A, 2013, 1, 6037
    DOI: 10.1039/C3TA01638B

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