Issue 25, 2013

Phosphorus-doped graphenenanosheets as efficient metal-free oxygen reduction electrocatalysts

Abstract

Metal-free phosphorus-doped graphene nanosheets (P-TRG) with large surface area (496.67 m2 g−1) and relatively high P-doping level (1.16 at.%) were successfully prepared by thermal annealing a homogenous mixture of graphene oxide and 1-butyl-3-methlyimidazolium hexafluorophosphate under argon atmosphere. It was found that the P atoms were substitutionally incorporated into the carbon framework and were partially oxidized, which created new active sites for the oxygen reduction reaction (ORR). Accordingly, the ORR catalytic performance of the P-doped graphene was demonstrated to be better than or at least comparable to that of the benchmark Pt/C catalyst.

Graphical abstract: Phosphorus-doped graphene nanosheets as efficient metal-free oxygen reduction electrocatalysts

Supplementary files

Article information

Article type
Paper
Submitted
05 Mar 2013
Accepted
11 Apr 2013
First published
12 Apr 2013

RSC Adv., 2013,3, 9978-9984

Phosphorus-doped graphene nanosheets as efficient metal-free oxygen reduction electrocatalysts

R. Li, Z. Wei, X. Gou and W. Xu, RSC Adv., 2013, 3, 9978 DOI: 10.1039/C3RA41079J

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