Novel nanocomposite membranes based on cross-linked eco-friendly polymers doped with sulfated titania nanotubes for direct methanol fuel cell application

Novel nanocomposite membranes based on cross-linked eco-friendly polymers doped with sulfated titania nanotubes for direct methanol fuel cell application

Developing low cost and highly active fuel cell is one of the high-priority research directions for fuel cell commercialization, whereas durable electrodes and electrolyte membranes are keys for its optimization. Herein, a novel nanocomposite electrolyte membranes for direct methanol fuel cell were...

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Bibliographic Details
Published in:Nanomaterials and nanotechnology Vol. 10; p. 184798042096436
Main Authors: Gouda, MH, Konsowa, Abdelaziz H, Farag, Hassan A, Elessawy, Noha A, Tamer, Tamer M, Mohy Eldin, Mohamed S
Format: Journal Article
Language:English
Published: London, England SAGE Publications 2020
Hindawi Limited
Subjects:
Carrageenan
Commercialization
Doping
Electrolytes
Fuel cells
Ion exchange
Mechanical properties
Membranes
Methanol
Nanocomposites
Nanotubes
Optimization
Polymer blends
Polyvinyl alcohol
Thermodynamic properties
Titanium dioxide
sulfated titania nanotube
iota carrageenan
Polyvinyl alcohol
nanocomposite membrane
polymer electrolyte membrane
direct methanol fuel cell
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Summary:Developing low cost and highly active fuel cell is one of the high-priority research directions for fuel cell commercialization, whereas durable electrodes and electrolyte membranes are keys for its optimization. Herein, a novel nanocomposite electrolyte membranes for direct methanol fuel cell were prepared from eco-friendly polymer blend composed of poly(vinyl alcohol) (PVA) and iota carrageenan (IC). Sulfated titania (SO4TiO2) nanotubes are synthesized by impregnation–calcination method and incorporated as doping agents into the polymer matrix with different percentage ranged between 1 wt% and .5 wt%. The PVA/IC/SO4TiO2 nanocomposite membranes exhibited reduction in water and methanol uptake compared to that of undoped membrane, while the thermal properties and oxidative stability increased as the doping agent content increased. Methanol permeability of PVA/IC/ S O 4 2 − -TiO2-7.5 membrane was 0.62 × 10−7 cm2 s−1, which is 43 times lower than Nafion 117 (26.9 × 10−7 cm2 s−1). Furthermore, it was noticed that the ion exchange capacity and mechanical properties of the nanocomposite membranes are higher than that of Nafion 117.
ISSN:1847-9804
1847-9804
DOI:10.1177/1847980420964368