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Nanocomposite polymer electrolyte membranes based on poly(vinylphosphonic acid)/TiO2 nanoparticles

Published online by Cambridge University Press:  05 December 2012

Ayşe Aslan  and
Ayhan Bozkurt
Ayşe Aslan
Affiliation:
Department of Chemistry, Fatih University, 34500 Büyükçekmece-İstanbul, Turkey
Ayhan Bozkurt*
Affiliation:
Department of Chemistry, Fatih University, 34500 Büyükçekmece-İstanbul, Turkey
*
a)Address all correspondence to this author. e-mail: [email protected]
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Abstract

In the present work, proton conducting nanocomposite electrolytes containing poly(vinylphosphonic acid) (PVPA) and TiO2 have been prepared and characterized. In the nanocomposite materials, the TiO2 content was varied from 5% to 20% (w/w) to improve mechanical strength and stability. The thermal stability, proton conductivity, as well as morphology of the electrolytes were investigated. The interaction existed between PVPA and TiO2 was confirmed by Fourier transform infrared spectroscopy. Thermogravimetric analysis showed that the samples are thermally stable up to approximately 200 °C. Differential scanning calorimetry results indicate that the Tg of the materials shift to higher temperatures as TiO2 content increases. Scanning electron microscopy results confirmed that the TiO2 nanoparticles were successfully incorporated and homogeneously distributed in the PVPA matrix. In the anhydrous state, the proton conductivity of PVPA(10)TiO2(in situ) has been found to be 0.004 S/cm at 120 °C. The proton conductivity of these membranes are also measured and compared with previous studies.

Keywords

nanocomposite polymer electrolyteproton conductivity
Type
Articles
Information
Journal of Materials Research , Volume 27 , Issue 24 , 28 December 2012 , pp. 3090 - 3095
Copyright
Copyright © Materials Research Society 2012

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