Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/25112
Share/Export:
logo share SHARE logo core CORE BASE
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE
Title

Proton-conducting methacrylate–silica sol–gel membranes containing tungstophosphoric acid

AuthorsAparicio, Mario CSIC ORCID; Mosa Ruiz, Jadra CSIC ORCID; Etienne, M.; Durán, Alicia CSIC ORCID
KeywordsPEMFC
Hybrid conductor
Issue Date2005
PublisherElsevier
CitationJournal of Power Sources 145 (2005) 231–236
AbstractThe increase of the operation temperature in proton-exchange membrane fuel cell (PEMFC) above 100 ◦C is a great concern for the application of this type of cells in electric vehicles. Hybrid organic–inorganic membranes with nano-sized interfaces can combine the main properties to meet this objective. Methacrylate–silica covalent hybrid membranes have been synthesised by polymerization of 2-hydroxyethyl methacrylate and 3-methacryloxypropyl trimethoxysilane, and hydrolysis–polycondensation of alkoxide radicals. Tungstophosphoric acid hydrate was incorporated to endow the membranes with proton conductivity. The composition and synthesis conditions to promote organic polymerisation and sol–gel condensation avoiding phase separation have been optimised. The structural analysis shows homogeneous membranes without phase separation. The water retention properties provided by SiO2 and tungstophosphoric acid leads to high proton conductivity (maximum values around 3×10−2 S cm−1) at 100–150 ◦C. A 0.5M % of Tungstophosphoric acid (PWA) is enough to build well-connected paths for proton conduction.
Publisher version (URL)http://dx.doi.org/doi:10.1016/j.jpowsour.2005.01.071
URIhttp://hdl.handle.net/10261/25112
DOI10.1016/j.jpowsour.2005.01.071
Appears in Collections:(ICV) Artículos

Show full item record
Review this work

SCOPUSTM   
Citations

46
checked on May 22, 2022

WEB OF SCIENCETM
Citations

44
checked on May 17, 2022

Page view(s)

352
checked on May 24, 2022

Google ScholarTM

Check

Altmetric

Dimensions


WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.