English
 
User Manual Privacy Policy Disclaimer Contact us
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
 
 
DownloadE-Mail
  Palladium electrodissolution from model surfaces and nanoparticles

Pizzutilo, E., Geiger, S., Freakley, S. J., Mingers, A. M., Cherevko, S., Hutchings, G. J., et al. (2017). Palladium electrodissolution from model surfaces and nanoparticles. Electrochimica Acta, 229, 467-477. doi:10.1016/j.electacta.2017.01.127.

Item is

Basic

show hide
Item Permalink: http://hdl.handle.net/11858/00-001M-0000-002D-A668-8 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-002D-A669-6
Genre: Journal Article

Files

show Files

Locators

show

Creators

show
hide
 Creators:
Pizzutilo, Enrico1, Author              
Geiger, Simon1, Author              
Freakley, Simon J.2, Author              
Mingers, Andrea Maria1, Author              
Cherevko, Serhiy1, 3, Author              
Hutchings, Graham J.2, Author              
Mayrhofer, Karl J. J.1, 3, 4, Author              
Affiliations:
1Electrocatalysis, Interface Chemistry and Surface Engineering, Max-Planck-Institut für Eisenforschung GmbH, Max Planck Society, ou_1863354              
2Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff, UK, persistent22              
3Helmholtz-Institute Erlangen-Nuremberg for Renewable Energy (IEK-11), Forschungszentrum Jülich, Egerlandstrasse 3, 91058 Erlangen, Germany, ou_persistent22              
4Department of Chemical and Biological Engineering, Friedrich-Alexander-Universität Erlangen-Nürnberg, 91058 Erlangen, Germany , ou_persistent22              

Content

show
hide
Free keywords: palladium; dissolution; ORR catalyst; ICP-MS; PEMFC
 Abstract: Palladium (Pd) is considered as a possible candidate as catalyst for proton exchange membrane fuel cells (PEMFCs) due to its high activity and affordable price compared to platinum (Pt). However, the stability of Pd is known to be limited, yet still not fully understood. In this work, Pd dissolution is studied in acidic media using an online inductively coupled plasma mass spectrometry (ICP-MS) in combination with an electrochemical scanning flow cell (SFC). Crucial parameters influencing dissolution like potential scan rate, upper potential limit (UPL) and electrolyte composition are studied on a bulk polycrystalline Pd (poly -Pd). Furthermore, a comparison with a supported high -surface area catalyst is carried out for its potential use in industrial applications. For this aim, a carbon supported Pd nanocatalyst (Pd/C) is synthesized and its performance is compared with that of bulk poly -Pd. Our results evidence that the transient dissolution is promoted by three main contributions (one anodic and two cathodic). At potentials below 1.5 VRHE the anodic dissolution is the dominating mechanism, whereas at higher potentials the cathodic mechanisms prevail. On the basis of the obtained results, a model is thereafter proposed to explain the transient Pd dissolution.(C) 2017 Elsevier Ltd. All rights reserved.

Details

show
hide
Language(s): eng - English
 Dates: 2017-03-01
 Publication Status: Published in print
 Pages: 11
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Degree: -

Event

show

Legal Case

show

Project information

show

Source 1

show
hide
Title: Electrochimica Acta
  Abbreviation : Electrochim. Acta
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: Oxford, UK : Pergamon-Elsevier Science Ltd
Pages: - Volume / Issue: 229 Sequence Number: - Start / End Page: 467 - 477 Identifier: ISSN: 0013-4686
CoNE: /journals/resource/954925396434