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  Platinum-cobalt catalysts for the oxygen reduction reaction in high temperature proton exchange membrane fuel cells - Long term behavior under ex-situ and in-situ conditions

Schenk, A., Grimmer, C., Perchthaler, M., Weinberger, S., Pichler, B., Heinzl, C., et al. (2014). Platinum-cobalt catalysts for the oxygen reduction reaction in high temperature proton exchange membrane fuel cells - Long term behavior under ex-situ and in-situ conditions. Journal of Power Sources, 266, 313-322. doi:10.1016/j.jpowsour.2014.05.023.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0024-B78B-2 Version Permalink: http://hdl.handle.net/21.11116/0000-0001-6D84-0
Genre: Journal Article

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 Creators:
Schenk, Alexander1, Author              
Grimmer, Christoph1, Author              
Perchthaler, Markus1, 2, Author              
Weinberger, Stephan1, Author              
Pichler, Birgit1, Author              
Heinzl, Christoph3, Author              
Scheu, Christina4, Author              
Mautner, Franz-Andreas5, Author              
Bitschnau, Brigitte5, Author              
Hacker, Viktor6, Author              
Affiliations:
1Institute of Chemical Engineering and Environmental Technology, Fuel Cell Systems Group, Graz University of Technology, Steyrergasse 21, Graz 8010, Austria, ou_persistent22              
2Elcomax GmbH, 81737 Munich, Germany, ou_persistent22              
3Department of Chemistry, LMU Munich, Germany , ou_persistent22              
4Department of Chemistry, University of Munich (LMU), Butenandtstrasse 5-13, 81377 Munich, Germany, ou_persistent22              
5Institute of Physical and Theoretical Chemistry, Structure Science Group, Graz University of Technology, Stremayrgasse 9, Graz 8010, Austria, ou_persistent22              
6Graz University of Technology, Institute of Chemical Engineering and Environmental Technology, 8010 Graz, Austria, ou_persistent22              

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Free keywords: ELECTROCHEMICAL IMPEDANCE SPECTROSCOPY; SUPERIOR ELECTROCATALYTIC ACTIVITY; AC-IMPEDANCE; SURFACE-COMPOSITION; TRANSITION-METALS; ALLOY SURFACES; PT-SKIN; CO; CATHODE; STABILITYElectrochemistry; Energy & Fuels; PEMFCs; High temperature; ORR catalysts; Pt catalysts; Long term operation; Stability;
 Abstract: Platinum cobalt catalysts (Pt-Co) have attracted much interest as cathode catalysts for proton exchange membrane fuel cells (PEMFCs) due to their high activity toward oxygen reduction reaction (ORR). Many of the reported catalysts show outstanding performance in ex-situ experiments. However, the laborious synthesis protocols of these Pt-Co catalysts disable an efficient and economic production of membrane electrode assemblies (MEAs). We present an economic, flexible and continuous Pt-M/C catalyst preparation method as part of a large scale membrane electrode assembly manufacturing. In comparison, the as-prepared Pt-Co/C based high temperature (HT)-PEM MEA showed an equal performance to a commercially available HT-PEM MEA during 600 h of operation under constant load, although the commercial one had a significantly higher Pt loading at the cathode. (C) 2014 Elsevier B.V. All rights reserved.

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Language(s): eng - English
 Dates: 2014-11-15
 Publication Status: Published in print
 Pages: 10
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Degree: -

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Title: Journal of Power Sources
  Abbreviation : J. Power Sources
Source Genre: Journal
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Publ. Info: Amsterdam, The Netherlands : Elsevier
Pages: - Volume / Issue: 266 Sequence Number: - Start / End Page: 313 - 322 Identifier: ISSN: 0378-7753
CoNE: https://pure.mpg.de/cone/journals/resource/954925527849