Methanol permeability and proton conductivity of direct methanol fuel cell membranes based on sulfonated poly(vinyl alcohol)–layered silicate nanocomposites

2008 ◽  
Vol 109 (1) ◽  
pp. 452-458 ◽  
Author(s):  
P. Duangkaew ◽  
J. Wootthikanokkhan
Keyword(s):  
Fuel Cell ◽  
Direct Methanol Fuel Cell ◽  
Layered Silicate ◽  
Methanol Permeability ◽  
Poly Vinyl Alcohol ◽  
Fuel Cell Membranes ◽  
Silicate Nanocomposites ◽  
Direct Methanol ◽  
Methanol Fuel Cell ◽  
Sulfonated Poly

Blended Nafion®/SPEEK direct methanol fuel cell membranes for reduced methanol permeability

2009 ◽  
Vol 189 (2) ◽  
pp. 958-965 ◽  
Author(s):  
Jie-Cheng Tsai ◽  
Hui-Pin Cheng ◽  
Jen-Feng Kuo ◽  
Yao-Hui Huang ◽  
Chuh-Yung Chen
Keyword(s):  
Fuel Cell ◽  
Direct Methanol Fuel Cell ◽  
Cell Membranes ◽  
Methanol Permeability ◽  
Fuel Cell Membranes ◽  
Direct Methanol ◽  
Methanol Fuel Cell

scholarly journals Effect of Temperature on Sulfonated Poly (Ether Ether Ketone) Blended with Charged Surface Modifying Macromolecule Membrane for DMFCs

2017 ◽  
Vol 14 (1) ◽  
Author(s):  
A. Mayahi ◽  
J. Jaafar ◽  
M. N. A. Mohd Norddin ◽  
H. Hassan
Keyword(s):  
Fuel Cell ◽  
Direct Methanol Fuel Cell ◽  
Methanol Permeability ◽  
Charged Surface ◽  
Ether Ether Ketone ◽  
Poly Ether Ether Ketone ◽  
Direct Methanol ◽  
Ether Ketone ◽  
Methanol Fuel Cell ◽  
Sulfonated Poly

The purpose of this research was to determine the behavior of modified sulfonated poly (ether ether ketone) (SPEEK) with degree of sulfonation (DS) 68% blended by charged surface modifying macromolecule (cSMM) at different operating temperatures (room to 80°C) for direct methanol fuel cell application. The fabricated SPEEK (68)/cSMM membrane was compared with SPEEK (68) and Nafion112 membranes in terms of water uptake, proton conductivity, and methanol permeability at relatively high temperatures. The water uptake of SPEEK (68)/ cSMM was higher than that of SPEEK (68) and Nafion112 over the temperature ranges studied; however it was dissolved at 80°C. Proton conductivity of SPEEK (68)/cSMM showed improvement compared to SPEEK (68) at temperature range, but still lower than Nafion112, moreover methanol permeability behavior of fabricated membrane was lower at high temperatures as compared to that of SPEEK and Nafion112 and better overall performance was allocated to the fabricated membrane at 60°C.These results indicate that SPEEK (68)/cSMM membrane is promising to be used as a proton exchange membrane in direct methanol fuel cell.

Novel nanocomposite membrane based on Fe3O4@TDI@TiO2–SO3H: hydration, mechanical and DMFC study

2018 ◽  
Vol 42 (20) ◽  
pp. 16855-16862 ◽  
Author(s):  
Ali Amoozadeh ◽  
Hourieh Mazdarani ◽  
Hossein Beydaghi ◽  
Elham Tabrizian ◽  
Mehran Javanbakht
Keyword(s):  
Fuel Cell ◽  
Direct Methanol Fuel Cell ◽  
Nanocomposite Membrane ◽  
Methanol Permeability ◽  
Ether Ether Ketone ◽  
Poly Ether Ether Ketone ◽  
Direct Methanol ◽  
Ether Ketone ◽  
Methanol Fuel Cell ◽  
Sulfonated Poly

In this paper, a sulfonated poly(ether ether ketone)/SO3H-functionalized magnetic-titania (SPEEK/Fe3O4@TDI@TiO2–SO3H) nanocomposite membrane is synthesized with the aim of reducing methanol permeability as well as improving the proton conductivity and selectivity of pristine polymer to be used instead of Nafion in a direct methanol fuel cell (DMFC).

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

2020 ◽  
Vol 10 ◽  
pp. 184798042096436
Author(s):  
MH Gouda ◽  
Abdelaziz H Konsowa ◽  
Hassan A Farag ◽  
Noha A Elessawy ◽  
Tamer M Tamer ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Direct Methanol Fuel Cell ◽  
Low Cost ◽  
Methanol Permeability ◽  
Poly Vinyl Alcohol ◽  
Nanocomposite Membranes ◽  
Sulfated Titania ◽  
Electrolyte Membranes ◽  
Direct Methanol ◽  
Methanol Fuel Cell

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/[Formula: see text]-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.

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