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Platinum nanoparticles supported on nitrobenzene-functionalised graphene nanosheets as electrocatalysts for oxygen reduction reaction in alkaline media.
- Source :
-
Electrochemistry Communications . Aug2017, Vol. 81, p79-83. 5p. - Publication Year :
- 2017
-
Abstract
- A systematic study on the electrocatalytic properties of Pt nanoparticles supported on nitrobenzene-modified graphene (Pt-NB/G) as catalyst for oxygen reduction reaction (ORR) in alkaline solution was performed. Graphene nanosheets were spontaneously grafted with nitrophenyl groups using 4-nitrobenzenediazonium salt. The electrocatalytic activity towards the ORR and stability of the prepared catalysts in 0.1 M KOH solution have been studied and compared with that of the commercial Pt/C catalyst. The results obtained show that the NB-modified graphene nanosheets can be good Pt catalyst support with high stability and excellent electrocatalytic properties. The specific activity of Pt-NB/G for O 2 reduction was 0.184 mA cm −2 , which is very close to that obtained for commercial 20 wt% Pt/C catalyst (0.214 mA cm −2 ) at 0.9 V vs. RHE. The Pt-NB/G hybrid material promotes a four-electron reduction of oxygen and can be used as a promising cathode catalyst in alkaline fuel cells. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 13882481
- Volume :
- 81
- Database :
- Academic Search Index
- Journal :
- Electrochemistry Communications
- Publication Type :
- Academic Journal
- Accession number :
- 124187137
- Full Text :
- https://doi.org/10.1016/j.elecom.2017.06.009