Proton conducting composite membranes from polyether ether ketone and hydrated metal oxides

A. D'Epifanio*, B. Mecheri, G. Passarini, Enrico Traversa, M. Miyayama, S. Licoccia

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Composite membranes based on sulfonated polyether ether ketone (SPEEK) and hydrated tin oxide (SnO2·nH2O) were prepared and characterized. The formation of the composite substantially modified the properties of SPEEK in terms of water uptake and solubility. The structural and electrochemical performance of the samples were investigated by simultaneous thermogravimetric and differential thermal analyses (TG-DTA), X-ray diffraction and electrochemical impedance spectroscopy (EIS). Proton conductivity measurements were carried out on the composite systems as a function of temperature and relative humidity in the 20-100% RH range. The polymer electrolyte membranes doped with SnO2·n(H2O) showed an increase in electrical performance that can be attributed to the formation of a coordinative interaction between the water molecule of the metal oxide and -SO3H groups of SPEEK. Conductivity values of the composite SPEEK/SnO2·n(H2O) demonstrated that it possesses good proton transport characteristics and it is then suitable for application as electrolyte in Polymer Electrolyte Fuel Cells. copyright The Electrochemical Society.

Original languageEnglish (US)
Title of host publicationNanostructured Metal Oxides
Subtitle of host publicationProcessing and Applications
Pages151-156
Number of pages6
Edition9
DOIs
StatePublished - Dec 1 2006
EventNanostructured Metal Oxides: Processing and Applications - 210th Electrochemical Society Meeting - Cancun, Mexico
Duration: Oct 29 2006Nov 3 2006

Publication series

NameECS Transactions
Number9
Volume3
ISSN (Print)1938-5862
ISSN (Electronic)1938-6737

Other

OtherNanostructured Metal Oxides: Processing and Applications - 210th Electrochemical Society Meeting
CountryMexico
CityCancun
Period10/29/0611/3/06

ASJC Scopus subject areas

  • Engineering(all)

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