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Fuel cell performance using a phosphonated polysulphone ionomer (PSUgPVPA) in the PEM cathode electrode
KTH, School of Chemical Science and Engineering (CHE), Chemical Engineering and Technology, Applied Electrochemistry.ORCID iD: 0000-0002-0452-0703
KTH, School of Chemical Science and Engineering (CHE), Chemical Engineering and Technology, Applied Electrochemistry.
KTH, School of Chemical Science and Engineering (CHE), Chemical Engineering and Technology, Applied Electrochemistry.
KTH, School of Chemical Science and Engineering (CHE), Chemical Engineering and Technology, Applied Electrochemistry.
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2013 (English)In: Fuel Cell Membranes, Electrode Binders, And Mea Performance, Electrochemical Society, 2013, no 23, 33-45 p.Conference paper, Published paper (Refereed)
Abstract [en]

Inexpensive and environmentally friendly electrolyte polymers that can be operated at higher temperatures and drier conditions are highly interesting for PEM fuel cells for automotive, portable power and stationary electricity generation applications. In this study an ionomer based on polysulfone grafted with poly(vinylphosphonic acid) (PSUgPVPA) in the cathode Pt/C catalyst layer (CL) was electrochemically characterized and compared to Nafion (R). The performance at different levels of humidity at 80 degrees C was evaluated by polarization and cyclic voltammetry. The results show that the performance of the PSUgPVPA-based cathode CL is comparable to that of Nafion (R) at 100% relative humidity (RH) but with some instabilities. However, at drier conditions significant losses of performance for the PSUgPVPA-based cathode was observed, concomitant to a reduced electrochemical surface area. The lower performance at low humidity is concluded to be due to a combination of lower proton conductivity and wettability or interference with oxygen reduction reaction at lower RH.

Place, publisher, year, edition, pages
Electrochemical Society, 2013. no 23, 33-45 p.
Series
ECS Transactions, ISSN 1938-5862 ; 45
Keyword [en]
Proton-Exchange Membranes, Gas-Diffusion Electrodes, Mass-Transport Limitations, Pefc Cathode, Poly(Vinylphosphonic Acid), Intermediate Temperature, Transient Techniques, Protogenic Group, Catalyst Layers, Side-Chains
National Category
Other Chemical Engineering
Identifiers
URN: urn:nbn:se:kth:diva-133501DOI: 10.1149/04523.0033ecstISI: 000325202900004Scopus ID: 2-s2.0-84885807043ISBN: 978-1-60768-394-0 (print)OAI: oai:DiVA.org:kth-133501DiVA: diva2:662111
Conference
Symposium on Fuel Cell Membranes, Electrode Binders, and MEA Performance - 221st ECS Meeting; Seattle, WA; United States; 6 May 2012 through 10 May 2012
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StandUp
Note

QC 20131106

Available from: 2013-11-06 Created: 2013-11-06 Last updated: 2016-04-18Bibliographically approved

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Wreland Lindström, RakelLindbergh, Göran

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Wreland Lindström, RakelAguinaga, Luis GuerreroOyarce, AlejandroUbeda, DiegoLindbergh, Göran
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