On the influence of the Pt to carbon ratio on the degradation of high surface area carbon supported PEM fuel cell electrocatalysts
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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.author | Speder, Jozsef | |
---|---|---|
dc.contributor.author | Zana, Alessandro | |
dc.contributor.author | Spanos, Ioannis | |
dc.contributor.author | Kirkensgaard, Jacob | |
dc.contributor.author | Mortensen, Kell | |
dc.contributor.author | Arenz, Matthias | |
dc.date.accessioned | 2016-02-24T22:40:47Z | |
dc.identifier.issn | 1388-2481 | |
dc.identifier.uri | http://hdl.handle.net/1885/98448 | |
dc.description.abstract | 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 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.publisher | Elsevier | |
dc.source | Electrochemistry Communications | |
dc.subject | Keywords: 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.title | On the influence of the Pt to carbon ratio on the degradation of high surface area carbon supported PEM fuel cell electrocatalysts | |
dc.type | Journal article | |
local.description.notes | Imported from ARIES | |
local.identifier.citationvolume | 34 | |
dc.date.issued | 2013 | |
local.identifier.absfor | 030000 - CHEMICAL SCIENCES | |
local.identifier.ariespublication | U3488905xPUB3021 | |
local.type.status | Published Version | |
local.contributor.affiliation | Speder, Jozsef, University of Copenhagen | |
local.contributor.affiliation | Zana, Alessandro, University of Copenhagen | |
local.contributor.affiliation | Spanos, Ioannis, University of Copenhagen | |
local.contributor.affiliation | Kirkensgaard, Jacob, College of Physical and Mathematical Sciences, ANU | |
local.contributor.affiliation | Mortensen, Kell, University of Copenhagen | |
local.contributor.affiliation | Arenz, Matthias, University of Copenhagen | |
local.description.embargo | 2037-12-31 | |
local.bibliographicCitation.startpage | 153 | |
local.bibliographicCitation.lastpage | 156 | |
local.identifier.doi | 10.1016/j.elecom.2013.06.001 | |
dc.date.updated | 2016-02-24T10:04:16Z | |
local.identifier.scopusID | 2-s2.0-84879481429 | |
Collections | ANU Research Publications |
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