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On the influence of the Pt to carbon ratio on the degradation of high surface area carbon supported PEM fuel cell electrocatalysts

Speder, Jozsef; Zana, Alessandro; Spanos, Ioannis; Kirkensgaard, Jacob; Mortensen, Kell; Arenz, Matthias

Description

In the presented work we investigate the influence of the Pt to carbon ratio on the degradation behavior of Pt based proton exchange membrane fuel cell (PEMFC) catalysts. In order to enable a systematic investigation, we utilized a recently developed colloidal synthesis approach for preparing catalysts with identical Pt nanoparticles (NPs), but varying Pt loadings. Two different commercially available, standard carbon supports were used, Vulcan XC72 and Ketjenblack EC-300. We evaluated the...[Show more]

dc.contributor.authorSpeder, Jozsef
dc.contributor.authorZana, Alessandro
dc.contributor.authorSpanos, Ioannis
dc.contributor.authorKirkensgaard, Jacob
dc.contributor.authorMortensen, Kell
dc.contributor.authorArenz, Matthias
dc.date.accessioned2016-02-24T22:40:47Z
dc.identifier.issn1388-2481
dc.identifier.urihttp://hdl.handle.net/1885/98448
dc.description.abstractIn the presented work we investigate the influence of the Pt to carbon ratio on the degradation behavior of Pt based proton exchange membrane fuel cell (PEMFC) catalysts. In order to enable a systematic investigation, we utilized a recently developed colloidal synthesis approach for preparing catalysts with identical Pt nanoparticles (NPs), but varying Pt loadings. Two different commercially available, standard carbon supports were used, Vulcan XC72 and Ketjenblack EC-300. We evaluated the influence of the platinum loading on the electrochemical surface area (ECSA) loss by applying accelerated stress tests simulating a load-cycle in a PEMFC and start-up/shutdown conditions. Simulating load cycles, no clear influence of the Pt loading on the ECSA loss is observed, whereas the ECSA loss significantly increases with increasing Pt loading when simulating start-up/shutdown conditions.
dc.publisherElsevier
dc.sourceElectrochemistry Communications
dc.subjectKeywords: Accelerated stress; Carbon corrosion; Colloidal synthesis; Degradation behavior; Electrochemical surface area; High surface area; Platinum loadings; Polymer electrolyte fuel cells; Carbon; Electrocatalysts; Platinum; Stress analysis; Synthesis (chemical); Carbon corrosion; Electrocatalyst durability; Polymer electrolyte fuel cells
dc.titleOn the influence of the Pt to carbon ratio on the degradation of high surface area carbon supported PEM fuel cell electrocatalysts
dc.typeJournal article
local.description.notesImported from ARIES
local.identifier.citationvolume34
dc.date.issued2013
local.identifier.absfor030000 - CHEMICAL SCIENCES
local.identifier.ariespublicationU3488905xPUB3021
local.type.statusPublished Version
local.contributor.affiliationSpeder, Jozsef, University of Copenhagen
local.contributor.affiliationZana, Alessandro, University of Copenhagen
local.contributor.affiliationSpanos, Ioannis, University of Copenhagen
local.contributor.affiliationKirkensgaard, Jacob, College of Physical and Mathematical Sciences, ANU
local.contributor.affiliationMortensen, Kell, University of Copenhagen
local.contributor.affiliationArenz, Matthias, University of Copenhagen
local.description.embargo2037-12-31
local.bibliographicCitation.startpage153
local.bibliographicCitation.lastpage156
local.identifier.doi10.1016/j.elecom.2013.06.001
dc.date.updated2016-02-24T10:04:16Z
local.identifier.scopusID2-s2.0-84879481429
CollectionsANU Research Publications

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