Document Type: Research Article
Department of Chemical Engineering , South Tehran Branch, Islamic Azad University , Tehran ,Iran
Islamic Azad University South Branch
Department of Chemistry, Islamic Azad University, Naragh Branch, Naragh, Iran
Department of Chemistry, Amirkabir University of Technology, Tehran, 1599637111, Iran
In the present work, BaCe0.85Yb0.15O3-δ mixed metal oxide nanoparticles supplying strong acid sites and good hydrophilic nature were used for the first time to build organic-inorganic proton exchange membranes. Poly(vinyl alcohol) - BaCe0.85Yb0.15O3-δ (PVAYb) nanocomposite membranes were fabricated. Different analyses such as scanning electron microscope (SEM), energy dispersive X-ray spectroscopy (EDX), Fourier transform infra-red spectroscopy (FTIR) and Thermogravimetry analysis (TGA) were used to characterize and study the structural properties of the obtained membranes. SEM and EDX analyses exhibited a homogenous dispersion of the nanoparticles in the nanocomposite membrane. It was found that PVAYb1.5 had a better elemental distribution compared to PVAYb2.5 composite membrane. PVAYb nanocomposite membrane containing 1.5 wt.% of BaCe0.85Yb0.15O3-δ nanoparticles displayed high proton conductivity value (64 mS/cm) at 70 °C operation temperature. The peak power density of 29 mW/cm2 was obtained with a peak current density of 210 mA / cm2 for as-prepared proton exchange membrane fuel cell (PEMFC) equipped with PPYb1.5 nanocomposite membrane at 70 °C.