Non-noble Fe-NX electrocatalysts supported on the reduced graphene oxide for oxygen reduction reaction

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DOIResolve DOI: http://doi.org/10.1016/j.carbon.2014.04.092
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TypeArticle
Journal titleCarbon
ISSN0008-6223
Volume76
Pages386400; # of pages: 15
SubjectElectrolytic reduction; Glass membrane electrodes; Graphene; Atomic concentration; Catalyst preparation; Catalyst surfaces; Electron transfer; Glassy carbon electrodes; Oxygen reduction reaction; Reduced graphene oxides; Reduced graphene oxides (RGO); Electrocatalysts
AbstractIn this paper, the reduced graphene oxide (rGO) is synthesized from graphite oxide (GO) via microwave exfoliation method, and used to support non-noble metal Fe-NX based electrocatalysts (Fe-NX/rGO) for the oxygen reduction reaction (ORR). Tripyridyl triazine (TPTZ) is used as a ligand for Fe-NX catalyst preparation. The obtained catalyst presents a high content of pyridinic (N1) and pyrrolic (N2) nitrogen types on the catalyst surface (40.0% and 52.3% atomic concentrations, respectively) with Fe atomic content of 0.7%. A catalyst loading of 0.5 mg cm- 2 with a ionomer-to-carbon (ITC) mass ratio of 0.2 deposited on the glassy carbon electrode allows the highest ORR activity with the specific current of -0.35 mA mg-1 at a cell voltage of 0.8 V (vs. RHE). The overall electron transfer number obtained is of 3.98. Stability tests in acidic solution for this catalyst are also performed.
Publication date
PublisherElsevier
LanguageEnglish
AffiliationNational Research Council Canada; Energy, Mining and Environment
Peer reviewedYes
NPARC number21272787
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Record identifier544c84a1-af09-4b3a-bafd-31f1792b1ef0
Record created2014-12-03
Record modified2016-05-09
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