Influence of titania morphology on the electrochemical properties of composite polymer electrolyte membranes

Debora Marani, Chavalit Trakanprapai, Silvia Licoccia, Enrico Traversa, Masaru Miyayama

Research output: Contribution to journalConference articleResearchpeer-review

Abstract

A comparison of the physico-chemical properties of S-PEEK-based composite membranes containing nanometric or mesoporous anatase titania was carried out. The powders were characterized in terms of specific surface area (by B.E.T. apparatus), acidity, and structural features (XRD). Composites containing various amounts of both titania powders (from 1.33 up to 10% wt) were prepared by casting and their water uptake, proton exchange capacity and proton conductivity (EIS) were evaluated. Despite of its lower specific surface area (83 m2/g) nanometric titania-based composites clearly exhibited higher water absorption properties and superior electrochemical performance with respect to mesoporous titania (SSA = . 147 m2/g) containing systems. The improvement of membranes performance could be related to the larger number of water-adsorbing acidic sites on the nanometric surface.
Original languageEnglish
Article number1126-S07-02-T06-02
JournalMaterials Research Society Symposium Proceedings
Volume1126
Number of pages6
ISSN0272-9172
Publication statusPublished - 2009
Externally publishedYes
EventMRS Fall Meeting 2008 - Boston, MA, United States
Duration: 1 Dec 20085 Dec 2008

Conference

ConferenceMRS Fall Meeting 2008
CountryUnited States
CityBoston, MA
Period01/12/200805/12/2008

Cite this

Marani, D., Trakanprapai, C., Licoccia, S., Traversa, E., & Miyayama, M. (2009). Influence of titania morphology on the electrochemical properties of composite polymer electrolyte membranes. Materials Research Society Symposium Proceedings, 1126, [1126-S07-02-T06-02].