Pre-treatment effect on the transport properties of sulfonated poly(ether ether ketone) membranes for DMFC applications

• Tipo: Artigo em Revista Científica Internacional
• Data: 2006

Autores

Silva, V (Autor) Outra; Silva, V (Autor) Outra; Adélio Mendes (Autor) FEUP; Luis Madeira (Autor) FEUP; Nunes, S (Autor) Outra

Revista

Título: Desalination

Vol. 200

Páginas: 645-647

ISSN: 0011-9164

Editora: Elsevier

Indexação

ISI Web of Science

Scopus - 2 Citações

COMPENDEX

Classificação Científica

FOS: Ciências da engenharia e tecnologias > Engenharia química

CORDIS: Ciências Tecnológicas > Engenharia > Engenharia química

Outras Informações

ID Authenticus: P-00F-HE2

DOI: 10.1016/j.desal.2006.03.448

Abstract (EN): Liquid feed direct methanol fuel cells (DMFCs) employing proton-exchange membranes (PEMs) are promising candidates for portable power applications [1]. However, the use of perfluorinated membranes as polymer electrolyte leads to a significant decrease in the fuel cell Faraday efficiency due to methanol crossover [1]. Nonfluorinated membranes based on sulfonated poly(ether ether ketone) (sPEEK) have been presented as promising materials due to their high proton conductivity [2]. Also, in order to improve the membrane properties for DMFC applications, the single-phase sPEEK polymer was modified by the incorporation of zirconium oxide (ZrO2), which decreases the methanol permeation [3]. Furthermore, the membrane properties are also influenced by proper sample pre-treatment. The present study aims to characterize sPEEK membranes and to perform a critical study regarding the pre-treatment effects on the membrane properties. Nafion® 1135 (from Aldrich) was used as reference material.

Idioma: Inglês

Tipo (Avaliação Docente): Científica