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Boron and phosphorous-doped graphene as a metal-free electrocatalyst for the oxygen reduction reaction in alkaline medium

Title
Boron and phosphorous-doped graphene as a metal-free electrocatalyst for the oxygen reduction reaction in alkaline medium
Authors
Jo, G[Jo, Gayoung]Sanetuntikul, J[Sanetuntikul, Jakkid]Shanmugam, S[Shanmugam, Sangaraju]
DGIST Authors
Jo, G[Jo, Gayoung]; Sanetuntikul, J[Sanetuntikul, Jakkid]; Shanmugam, S[Shanmugam, Sangaraju]
Issue Date
2015
Citation
RSC Advances, 5(66), 53637-53643
Type
Article
Article Type
Article
Keywords
Autogenic PressureBoron-Doped GrapheneCatalystsCommercial CatalystElectrocatalystsElectrolytic ReductionGrapheneMetal-Free CatalystsMetal-Free ElectrocatalystsOxygenOxygen Reduction ReactionPhosphorusPyrolysis TemperatureReaction Temperature
ISSN
2046-2069
Abstract
An efficient solid-state pyrolysis route is presented to prepare boron- and phosphorous-doped graphene without using a template, solvent, or catalyst. By controlling the pyrolysis temperature, selective doping of phosphorous or boron was achieved. Phosphorous-doped graphene (PDG) and boron-doped graphene (BDG) samples are obtained when pyrolysing the precursor at 700°C and at 900°C, respectively under autogenic pressure. PDG and BDG electrodes show a considerable oxygen reduction activity by a direct four-electron pathway in alkaline medium. Further, these catalysts show improved durability under continuous oxygen reduction, resistance to methanol oxidation and CO-tolerance than the commercial catalyst. The results suggest that by tuning the reaction temperature, selective doping of either boron or phosphorous in graphene was achieved and the doped graphene samples were used as non-precious and metal-free catalysts for oxygen reduction. © The Royal Society of Chemistry.
URI
http://hdl.handle.net/20.500.11750/2629
DOI
10.1039/c5ra06952a
Publisher
Royal Society of Chemistry
Related Researcher
Files:
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Collection:
Energy Science and EngineeringAdvanced Energy Materials Laboratory1. Journal Articles


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