Preparation of Modified Sulfonated Poly(styrene divinylbenzene) with Polyaniline as a New Polymer Electrolyte Membrane for Direct Methanol Fuel Cell

摘要

A new modified proton exchange membrane (PEM) has been prepared with polyaniline (PANI)-sulfonated poly(styrene divinylbenzene) resin (SPSD)-polyethylene (PE). The proposed polymerelectrolyte membranes (PEM), PANI- SPSD-PE were prepared by blending different ratios of PANI(1-5%) with SPSD-PE and characterized with FT-IR, TGA/DSC and SEM. Different properties ofPMEs such as; water uptake, resistance and, conductivity as well as methanol permeability weremeasured to evaluate its performance in a direct methanol fuel cell (DMFC). The on-set degradationtemperature of the SPSD is above 120C. The ionic conductivity and permeability of the membrane formethanol were increased with increasing of PANI (%) in the membrane and temperature without anextra humidity supply. Finally, a DMFC was designed and assembled with the suggested PANI-SPSD.