Pre-treatment effect on the sulfonated poly(ether ether ketone) membrane transport properties and direct methanol fuel cell performance

• Tipo: Artigo em Revista Científica Internacional
• Data: 2007

Autores

Silva, VS (Autor) Outra; Silva, VB (Autor) Outra; Adélio Mendes (Autor) FEUP; Luis Madeira (Autor) FEUP; Silva, H (Autor) Outra; Michaelmann, J (Autor) Outra; Ruffmann, B (Autor) Outra; Nunes, SP (Autor) Outra

Revista

Título: Separation Science and Technology

Vol. 42 Nº 12

Páginas: 2909-2925

ISSN: 0149-6395

Editora: Taylor & Francis

Indexação

ISI Web of Knowledge - 6 Citações

ISI Web of Science

Scopus - 7 Citações

Classificação Científica

FOS: Ciências da engenharia e tecnologias > Engenharia química

CORDIS: Ciências Tecnológicas > Engenharia > Engenharia química

Outras Informações

ID Authenticus: P-004-EKZ

DOI: 10.1080/01496390701558342

Abstract (EN): In this paper a critical study is presented on how the direct methanol fuel cell (DMFC) membrane properties are affected by a pre-treatment. Membranes based on sulfonated poly(ether ether ketone) (sPEEK) with sulfonation degree (SD) of 42% were used, plain and modified inorganically with 1 wt.% of zirconium oxide. Nafion (R) 1135 was used as reference. The results obtained show that the sPEEK polymer (SD = 42%) enables the preparation of proton exchange membranes with improved properties compared to Nafion (R) and to the ZrO2-modified sPEEK membrane, mainly due to its improved relation between proton conductivity and methanol permeation. After the pre-treatment, the plain sPEEK membrane had a performance 6.4 times higher in terms of maximum power output when used in the DMFC.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 17