شماره ركورد كنفرانس :
5048
عنوان مقاله :
Synthesis and Characterization of New Proton Conducting Hybrid Membranes for DMFC Fuel Cells Based on Poly(vinyl alcohol) and Sulfonated Nanoporous Silica
Author/Authors :
Hossein ،Beydaghi Department of Chemistry - Amirkabir University of Technology, Tehran, Iran , Mehran ،Javanbakht Department of Chemistry - Amirkabir University of Technology, Tehran, Iran , Hossein ،Salar Amoli Faculty of Chemical Engineering - Iranian Research Organisation for Science and Technology, Tehran, Iran , Alireza ،Badiei School of Chemistry - University College of Science - University of Tehran, Tehran, Iran
كليدواژه :
Hybrid membranes , Functionalized nanoporous silica , Proton conductivity , DMFC Fuel cells , Poly(vinyl alcohol)
عنوان كنفرانس :
ششمين كنگره بين المللي مهندسي شيمي
چكيده لاتين :
This method has been realized by preparing hybrid membranes containing SO3H-functionalized nanoporous Si-SBA-15
as hydrophilic inorganic modifier, glutaraldehyde, GLA, as cross-linking agent in a poly(vinyl alcohol), PVA, matrix.
The different hybrid membranes are characterized concerning their thermal stability, water uptake, ATR and proton
conductivity. Different PVA-based membranes (PVA, PVA:GLA, PVA:SBA-15 and PVA:GLA:SBA-15) were
compared with each other. Compared with the pure PVA membrane, the hybrid membranes containing modified silica
displayed lower thermal stability due to role of the modified silica particles as nucleation centers. In addition, the hybrid
membranes showed lower water uptake but higher proton conductivity than the corresponding membranes without Si-
SBA-15.
