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Issue 27, 2016
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Transition metal/nitrogen dual-doped mesoporous graphene-like carbon nanosheets for the oxygen reduction and evolution reactions

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Abstract

The oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) have been considered as a key step in energy conversion processes. Here, a novel and simple Mg(OH)2 nanocasting method is adopted to fabricate Co and N co-doped porous graphene-like carbon nanosheets (Co@N-PGCS) by using chitosan as both carbon and N sources. The as-obtained Co@N-PGCS shows a mesopore-dominated structure as well as a high specific surface area (1716 cm2 g−1). As a bifunctional electrocatalyst towards both the ORR and OER, it shows favorable ORR performance compared with the commercial Pt/C catalyst with an onset potential of −0.075 V and a half-wave potential of −0.151 V in 0.1 M KOH solutions. Furthermore, it also displays considerable OER properties compared with commercial IrO2. The effective catalytic activity could originate from the introduction of transition metal species and few-layer mesoporous carbon structures.

Graphical abstract: Transition metal/nitrogen dual-doped mesoporous graphene-like carbon nanosheets for the oxygen reduction and evolution reactions

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Publication details

The article was received on 20 Apr 2016, accepted on 03 Jun 2016 and first published on 06 Jun 2016


Article type: Paper
DOI: 10.1039/C6NR03247H
Nanoscale, 2016,8, 13311-13320

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    Transition metal/nitrogen dual-doped mesoporous graphene-like carbon nanosheets for the oxygen reduction and evolution reactions

    X. Liu, I. S. Amiinu, S. Liu, K. Cheng and S. Mu, Nanoscale, 2016, 8, 13311
    DOI: 10.1039/C6NR03247H

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