scholarly journals DEVELOPMENT AND CHARACTERIZATION OF POLY(OXY-1,4-PHENYLENESULFONYL-1,4-PHENYLENE) FOR PROTON EXCHANGE MEMBRANES

2021 ◽  
pp. 1-7
Author(s):  
ANDRÉS PACHECO LANCHEROS ◽  
AURA LOMBANA PUERTA ◽  
ÁLVARO REALPE JIMÉNEZ ◽  
DINA MENDOZA BELTRAN ◽  
MARÍA TERESA ACEVEDO MORANTES
Keyword(s):  
Mechanical Properties ◽  
Contact Angle ◽  
Fuel Cell ◽  
Water Absorption ◽  
High Performance ◽  
Low Cost ◽  
Proton Exchange Membranes ◽  
Proton Exchange ◽  
Cell Technology

Proton Exchange Membranes (PEMs) are materials developed with a focus on high-performance, low-cost features to achieve promising fuel cell technology in stationary, portable, and transportation facilities. In this study, we synthesized membranes from Poly (oxy-1,4-phenylenesulfonyl-1,4-phenylene) (PES) sulfonated with modification by adding nanoclay to improve the mechanical properties of PEMs. The sulfonation time and the concentration of nanoclays directly favored properties such as contact angle, water absorption, porosity, and mechanical properties. However, a higher concentration of nanoclays (e.g., 10% by weight) damages the mechanical properties of PES membranes specifically. The membrane with 5% by weight of nanoclay and a sulfonation time of 2 h achieved the best performance.

scholarly journals Design of Promising Green Cation-Exchange-Membranes-Based Sulfonated PVA and Doped with Nano Sulfated Zirconia for Direct Borohydride Fuel Cells

Polymers ◽  
2021 ◽  
Vol 13 (23) ◽  
pp. 4205
Author(s):  
Marwa H. Gouda ◽  
Noha A. Elessawy ◽  
Sami A. Al-Hussain ◽  
Arafat Toghan
Keyword(s):  
Fuel Cell ◽  
Sulfated Zirconia ◽  
Low Cost ◽  
Composite Membranes ◽  
Proton Exchange Membranes ◽  
Proton Exchange ◽  
Poly Vinyl Alcohol ◽  
Binary Polymer ◽  
Physicochemical Features ◽  
Direct Borohydride Fuel Cells

The direct borohydride fuel cell (DBFC) is a low-temperature fuel cell that requires the development of affordable price and efficient proton exchange membranes for commercial purposes. In this context, super-acidic sulfated zirconia (SO4ZrO2) was embedded into a cheap and environmentally friendly binary polymer blend, developed from poly(vinyl alcohol) (PVA) and iota carrageenan (IC). The percentage of SO4ZrO2 ranged between 1 and 7.5 wt.% in the polymeric matrix. The study findings revealed that the composite membranes’ physicochemical features improved by adding increasing amounts of SO4ZrO2. In addition, there was a decrease in the permeability and swelling ratio of the borohydride membranes as the SO4ZrO2 weight% increased. Interestingly, the power density increased to 76 mW cm−2 at 150 mA cm−2, with 7.5 wt.% SO4ZrO2, which is very close to that of Nafion117 (91 mW cm−2). This apparent selectivity, combined with the low cost of the eco-friendly fabricated membranes, points out that DBFC has promising future applications.

TiO2-Si- or SrTiO3-Si-impregnated PVA–based low-cost proton exchange membranes for application in microbial fuel cell

Ionics ◽  
2020 ◽  
Vol 26 (12) ◽  
pp. 6195-6205
Author(s):  
G. D. Bhowmick ◽  
Dhruba Dhar ◽  
M. M. Ghangrekar ◽  
R. Banerjee
Keyword(s):  
Fuel Cell ◽  
Microbial Fuel Cell ◽  
Low Cost ◽  
Proton Exchange Membranes ◽  
Proton Exchange

Preparation and characterization of branched and linear sulfonated poly(ether ketone sulfone) proton exchange membranes for fuel cell applications

2008 ◽  
Vol 46 (5) ◽  
pp. 1792-1799 ◽  
Author(s):  
Hye Seok Park ◽  
Dong Wan Seo ◽  
Seung Woo Choi ◽  
Young Gi Jeong ◽  
Ju Ho Lee ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Proton Exchange Membranes ◽  
Proton Exchange ◽  
Ether Ketone ◽  
Sulfonated Poly

Preparation and Characterization of Radiation Grafted Proton Exchange Membranes of LLDPE

2010 ◽  
Vol 123-125 ◽  
pp. 1091-1094
Author(s):  
Sabia Sultana ◽  
Mubarak A. Khan ◽  
Nazia Rahman ◽  
Maksudur R. Khan
Keyword(s):  
Irradiation Time ◽  
Low Cost ◽  
Proton Exchange Membranes ◽  
Exchange Capacity ◽  
Proton Exchange ◽  
Membrane Properties ◽  
Molar Ratio ◽  
Grafting Technique ◽  
Exchange Membrane

As the demand for radiation grafted Proton Exchange Membranes (PEMs) is intensifying, interest in new materials for preparing PEM is rapidly increasing. This study aims to develop sustainable low-cost highly conductive PEM. In our work we have prepared linear low density polyethylene (LLDPE) based PEM and investigated the membrane characteristics. Simultaneous radiation grafting technique has been applied to introduce the styrene monomer onto the LLDPE films by UV radiation under atmospheric circumstances. It has been observed that grafting yield gradually changes depending on the irradiation time and monomer molar ratio. We have performed experiments to assess certain membrane properties, such as water uptake, ion exchange capacity with respect to their applicability in fuel cells. Our experimental results demonstrate the effectiveness of LLDPE based PEM as a cation exchange membrane.

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