Nanohybrid membrane of zirconia/polytetramethylene oxide synthesized by sol-gel processes was shown to possess flexible and temperature-tolerant properties. The polymeric membrane showed enhanced thermal stability up to 300°C due to the presence of cross-linkable inorganic nanophase in the hybrid macromolecular matrix. The membrane becomes proton-conducting polymer electrolyte when added with 12-phosphotungstic acid (PWA) or soaked by phosphoric acid. The proton-conducting properties of the hybrid membranes with various PWA or phosphoric acid concentrations were investigated in the temperature range from room temperature to 150°C under saturated humidity conditions. The flexible and large-sized hybrid polymer membrane has been found to have high proton conductivities from 1 × 10-3 to 5 × 10-2 S/cm under saturated humidity condition between 100 and 150°C.
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Renewable Energy, Sustainability and the Environment
- Surfaces, Coatings and Films
- Materials Chemistry