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Issue 14, 2015
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Wet-chemical nitrogen-doping of graphene nanoplatelets as electrocatalysts for the oxygen reduction reaction

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Abstract

We report a facile wet-chemical approach for the preparation of high-quality pyridinic N-rich nitrogen-doped graphene nanoplatelets (PN-GNs). Efficient doping of nitrogen atoms into two-dimensional graphene networks can be achieved via an acid-catalyzed dehydration reaction between GO and primary amine-containing small molecules. The nitrogen content in PN-GNs can easily be controlled over a wide range (3.27–15.28 wt%) by simple variation of the molar feed ratio of reactants. Furthermore, specific pyridinic nitrogen configurations, considered beneficial for the ORR process, can be incorporated into the PN-GNs. This results in the efficient structural restoration of graphene structures during the reaction. Therefore, these unique features of PN-GNs allow them to show superior electrocatalytic activities (high selectivity, excellent long-term stability and good tolerance to methanol crossover) toward the ORR in an alkaline electrolyte.

Graphical abstract: Wet-chemical nitrogen-doping of graphene nanoplatelets as electrocatalysts for the oxygen reduction reaction

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Publication details

The article was received on 21 Dec 2014, accepted on 24 Feb 2015 and first published on 24 Feb 2015


Article type: Paper
DOI: 10.1039/C4TA07035F
Citation: J. Mater. Chem. A, 2015,3, 7659-7665
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    Wet-chemical nitrogen-doping of graphene nanoplatelets as electrocatalysts for the oxygen reduction reaction

    D. W. Chang, H. Choi and J. Baek, J. Mater. Chem. A, 2015, 3, 7659
    DOI: 10.1039/C4TA07035F

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