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

• Type: Article in International Scientific Journal
• Date: 2008

Authors

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

Journal

Title: Fuel Cells

Vol. 8 No. 3-4

Pages: 209-216

ISSN: 1615-6846

Publisher: Wiley-Blackwell

Indexing

ISI Web of Knowledge - 19 Citations

ISI Web of Science

Scopus - 24 Citations

Scientific classification

FOS: Engineering and technology > Other engineering and technologies

CORDIS: Technological sciences

Other information

Authenticus ID: 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.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 8