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Issue 97, 2014
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Oxygen-enriched activated carbons from pomelo peel in high energy density supercapacitors

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Abstract

We used low-cost pomelo peel (PP) as a biomass-derived porous activated carbon to fabricate a high energy density symmetric supercapacitor. The porous activated carbon was prepared from the pomelo peel (PP) via pyrolysis and a KOH activation process, followed by heat treatment under an argon atmosphere. The resulting porous carbon possesses a very high specific surface area (2105 m2 g−1) and abundant oxygen functionalities, which lead to a wide voltage window of 1.7 V, a specific capacitance of 43.5 F g−1 and a high energy density of 17.1 W h kg−1 for the as-assembled AC//AC symmetric supercapacitor. These impressive electrochemical characteristics may indicate the PP to act as a new biomass source of carbonaceous materials for low-cost and high performance electrical energy storage devices.

Graphical abstract: Oxygen-enriched activated carbons from pomelo peel in high energy density supercapacitors

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Publication details

The article was received on 28 Aug 2014, accepted on 09 Oct 2014 and first published on 09 Oct 2014


Article type: Paper
DOI: 10.1039/C4RA09395J
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Citation: RSC Adv., 2014,4, 54662-54667
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    Oxygen-enriched activated carbons from pomelo peel in high energy density supercapacitors

    C. Peng, J. Lang, S. Xu and X. Wang, RSC Adv., 2014, 4, 54662
    DOI: 10.1039/C4RA09395J

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