Novel, Fluorine-Free Membranes Based on Sulfonated Polyvinyl Alcohol and Poly(ether-block-amide) with Sulfonated Montmorillonite Nanofiller for PEMFC Applications

被引:0
|
作者
Al-Mashhadani, Manhal H. Ibrahim [1 ,2 ,3 ]
Szijjarto, Gabor Pal [1 ]
Sebestyen, Zoltan [1 ]
Karoly, Zoltan [1 ]
Mihaly, Judith [1 ]
Tompos, Andras [1 ]
机构
[1] Inst Mat & Environm Chem, HUN REN Res Ctr Nat Sci, Magyar Tudosok Korutja 2, H-1117 Budapest, Hungary
[2] Eotv Lorand Univ, Hevesy Gyorgy Doctoral Sch Chem, Pazmany Peter Setany 1-A, H-1117 Budapest, Hungary
[3] Univ Baghdad, Inst Laser Postgrad Studies, Baghdad, Iraq
关键词
proton exchange membrane; inorganic-organic hybrid; fuel cell; fluorine free; sulfonated polyvinyl alcohol (S-PVA); PEBAX; sulfonated montmorillonite (S-MMT); PROTON-EXCHANGE MEMBRANES; POLY(ARYLENE ETHER SULFONE)S; FUEL-CELL; METHANOL PERMEABILITY; COMPOSITE MEMBRANES; BORIC-ACID; NANOPARTICLES; CONDUCTIVITY; PERFORMANCE; TIO2;
D O I
10.3390/membranes14100211
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
Novel blend membranes containing S-PVA and PEBAX 1657 with a blend ratio of 8:2 (referred to as SPP) were prepared using a solution-casting technique. In the manufacturing process, sulfonated montmorillonite (S-MMT) in ratios of 0%, 3%, 5%, and 7% was used as a filler. The crystallinity of composite membranes has been investigated by X-ray diffraction (XRD), while the interaction between the components was evaluated using Fourier-transform infrared spectroscopy (FT-IR). With increasing filler content, good compatibility between the components due to hydrogen bonds was established, which ultimately resulted in improved tensile strength and chemical stability. In addition, due to the sulfonated moieties of S-MMT, the highest ion exchange capacity (0.46 meq/g) and water uptake (51.61%) can be achieved at the highest filler content with an acceptable swelling degree of 22.65%. The composite membrane with 7% S-MMT appears to be suitable for application in proton exchange membrane fuel cells (PEMFCs). Amongst the membranes studied, this membrane achieved the highest current density and power density in fuel cell tests, which were 149.5 mA/cm2 and 49.51 mW/cm2. Our fluorine-free composite membranes can become a promising new membrane family in PEMFC applications, offering an alternative to Nafion membranes.
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页数:19
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