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Author(s): Vasco Silva
Valter Silva
Adélio Mendes
Luis Madeira
Suzana Nunes
Title: Pre-Treatment Effect on the Transport Properties of Sulfonated Poly(ether ether ketone) Membranes for DMFC Applications
Issue Date: 2006
Abstract: Liquid feed direct methanol fuel cells (DMFCs)employing proton-exchange membranes (PEMs)are promising candidates for portable powerapplications [1]. However, the use of perfluorinatedmembranes as polymer electrolyte leadsto a significant decrease in the fuel cell Faradayefficiency due to methanol crossover [1]. Nonfluorinatedmembranes based on sulfonatedpoly(ether ether ketone) (sPEEK) have beenpresented as promising materials due to theirhigh proton conductivity [2]. Also, in order toimprove the membrane properties for DMFCapplications, the single-phase sPEEK polymerwas modified by the incorporation of zirconiumoxide (ZrO2), which decreases the methanolpermeation [3]. Furthermore, the membrane propertiesare also influenced by proper samplepre-treatment. The present study aims to characterizesPEEK membranes and to perform a criticalstudy regarding the pre-treatment effects onthe membrane properties. Nafion® 1135 (fromAldrich) was used as reference material.
Subject: Engenharia química, Engenharia química
Chemical engineering, Chemical engineering
Scientific areas: Ciências da engenharia e tecnologias::Engenharia química
Engineering and technology::Chemical engineering
Document Type: Artigo em Revista Científica Internacional
Rights: restrictedAccess
Appears in Collections:FEUP - Artigo em Revista Científica Internacional

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