Synthesis and Characterization of New Proton Conducting Hybrid Membranes for DMFC Fuel Cells Based on Poly(vinyl alcohol) and Sulfonated Nanoporous Silica
محل انتشار: ششمین کنگره بین المللی مهندسی شیمی
سال انتشار: 1388
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 1,664
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شناسه ملی سند علمی:
ICHEC06_516
تاریخ نمایه سازی: 1 مهر 1388
چکیده مقاله:
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.
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نویسندگان
Hossein Beydaghi
Department of Chemistry, Amirkabir University of Technology, Tehran, Iran
Mehran Javanbakht
Department of Chemistry, Amirkabir University of Technology, Tehran, Iran Nano Science and Technology Research Cente
Hossein Salar Amoli
Faculty of Chemical Engineering, Iranian Research Organisation for Science and Technology, IROST, Tehran, Iran
Alireza Badiei
School of Chemistry, University College of Science, University of Tehran, Tehran, Iran