Size-selected platinum clusters as electrocatalysts for the oxygen reduction reaction

Markus Nesselberger, Sebastian Kunz, Florian F. Schweinberger, Katrin Schlögl, Karl J.J. Mayrhofer, Ueli Heiz, Matthias Arenz

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations

Abstract

In the present study size-selected platinum clusters fabricated by a laser ablation source are investigated with respect to the oxygen reduction reaction. Pt46 Clusters were deposited onto planar carbon surfaces leading to different cluster coverages between 0.018 clusters / nm2 and 0.115 clusters / nm2. In all cases the coverage on the glassy carbon support was low enough to avoid cluster agglomeration and hence probe the activity of isolated Pt46 clusters. The result shows that the specific ORR activity of the Pt46 clusters, i.e. the reaction rate normalized with respect to the electrochemical active surface area, depends on the cluster coverage and increases with higher coverage.

Original languageEnglish
Title of host publicationPolymer Electrolyte Fuel Cells 12, PEFC 2012
PublisherElectrochemical Society Inc.
Pages1333-1338
Number of pages6
Edition2
ISBN (Print)9781607683506
DOIs
StatePublished - 2013
Externally publishedYes
Event12th Polymer Electrolyte Fuel Cell Symposium, PEFC 2012 - 222nd ECS Meeting - Honolulu, HI, United States
Duration: 7 Oct 201212 Oct 2012

Publication series

NameECS Transactions
Number2
Volume50
ISSN (Print)1938-5862
ISSN (Electronic)1938-6737

Conference

Conference12th Polymer Electrolyte Fuel Cell Symposium, PEFC 2012 - 222nd ECS Meeting
Country/TerritoryUnited States
CityHonolulu, HI
Period7/10/1212/10/12

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