Proton conducting membranes based on benzimiclazole sulfonic acid doped sulfonated poly(oxadiazole-triazole) copolymer for low humidity operation

• Tipo: Artigo em Revista Científica Internacional
• Data: 2008

Autores

Ponce, ML (Autor) Outra; Boaventura, M. (Autor) Outra; Gomes, D (Autor) Outra; Adélio Mendes (Autor) FEUP; Luis Madeira (Autor) FEUP; Nunes, SP (Autor) Outra

Revista

Título: Fuel Cells

Vol. 8 Nº 3-4

Páginas: 209-216

ISSN: 1615-6846

Editora: Wiley-Blackwell

Indexação

ISI Web of Knowledge - 19 Citações

ISI Web of Science

Scopus - 24 Citações

Classificação Científica

FOS: Ciências da engenharia e tecnologias > Outras ciências da engenharia e tecnologias

CORDIS: Ciências Tecnológicas

Outras Informações

ID Authenticus: P-003-Y1K

DOI: 10.1002/fuce.200800012

Abstract (EN): This work reports for the first time the preparation of sulphonated poly(oxadiazole-triazole) copolymer membranes doped with amphoteric molecule, 1H-benzimidazole-2-sulphonic acid and their characterisation as proton conductors at 120 degrees C and low humidity. The membranes had not only high proton conductivities, up to 4 x 10(-3) S cm(-1) at 120 degrees C and low relative humidity (5 and 10%), but also had good mechanical properties with a storage modulus of about 3 GPa at 300 degrees C and high thermal stability with T-g up to around 420 degrees C. Because of their superior ion conducting and mechanical properties they have potential as a proton conducting membrane for fuel cell applications, in particular at high temperature and extremely low-humidity conditions.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 8