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Issue 19, 2012
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Nitrogen modification of highly porous carbon for improved supercapacitor performance

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Abstract

Nitrogen is added to porous carbon, in both the bulk network as heteroatoms and coated on the surface of the pores, to increase the capacitance of electrodes for supercapacitor applications. Surface modification increases the amount of nitrogen by four times when compared to unmodified carbon that only contains nitrogen in the bulk. Pyrolysis of the modified carbon at a lower temperature also retains up to three times more nitrogen than high temperature pyrolysis. The surface modification dramatically improves the wetting behavior of the porous carbon and produces a capacitance that is nearly twice that of the unmodified carbon through a combination of double-layer formation and pseudocapacitive reactions.

Graphical abstract: Nitrogen modification of highly porous carbon for improved supercapacitor performance

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Publication details

The article was received on 14 Feb 2012, accepted on 17 Mar 2012 and first published on 13 Apr 2012


Article type: Paper
DOI: 10.1039/C2JM30923H
Citation: J. Mater. Chem., 2012,22, 9884-9889

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    Nitrogen modification of highly porous carbon for improved supercapacitor performance

    S. L. Candelaria, B. B. Garcia, D. Liu and G. Cao, J. Mater. Chem., 2012, 22, 9884
    DOI: 10.1039/C2JM30923H

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