شماره ركورد كنفرانس :
3256
عنوان مقاله :
Organically Modified Nanoclays and Chitosan Phosphotungstic Acid Complex Nanocomposites as Polyelectrolytes for Fuel Cells Applications
Author/Authors :
Mahdi Tohidian Department of polymer engineering and color technology - Amirkabir university of technology , Reza Ghaffarian Department of polymer engineering and color technology - Amirkabir university of technology , Emadodin Shakeri Department of polymer engineering and color technology - Amirkabir university of technology , Ghasem Bahlakeh Department of polymer engineering and color technology - Amirkabir university of technology , Erfan Dashtimoghadam Department of polymer engineering and color technology - Amirkabir university of technology , Mohammad Mahdi Hasani-Sadrabadi Department of polymer engineering and color technology - Amirkabir university of technology
كليدواژه :
Direct methanol fuel cell , Polyelectrolyte membranes , Proton conductivity , Methanol permeability , Montmorillonite
عنوان كنفرانس :
ششمين سمينار پيل سوختي ايران
چكيده لاتين :
Polyelectrolyte complex (PEC) of chitosan and phosphotungstic acid (PWA) was suggested and evaluated as an alternative membrane to Nafion for direct methanol fuel cells applications (DMFCs). To reduce the methanol permeability, several amounts of unmodified montmorillonite (MMT, trade name: cloisite Na) and organically modified montmorillonite (OMMT, trade names: cloisite 15A and cloisite 30B respectively) were introduced to the
system. The X-Ray diffraction (XRD) patterns of nanocomposites proved clay layers were exfoliated lower than 3 wt%. Proton conductivity and methanol permeability were measured. According to selectivity parameter – ratio of proton conductivity to methanol permeability– PEC containing 2wt% MMT 30B (PEC/2wt%MMT 30B) was identified as the optimum composition.The results indicate the optimumnanocomposite membrane as a promising polyelectrolyte membrane (PEM) for DMFC applications
