Self-healing and highly elastic fluorine-free proton exchange membranes comprised of poly(vinyl alcohol) derivative and phytic acid for durable fuel cells

Aldehyde terminated sulfonated poly (arylene ether sulfone) (SPAES-CHO) is prepared by a series of nucleophilic substitution reaction based on SPAES in this paper. Novel SPAES-graft-SPVA (SPAES-g-SPVA) membranes are fabricated by acetal reaction between SPAES-CHO and different amounts of sulfonated poly (vinyl alcohol) (SPVA). The 1H-NMR and FTIR indicate the successful preparation of SPAES-CHO and SPAES-g-SPVA membranes. With the introduction of SPVA, the SPAES-g-SPVA membranes have much lower methanol permeability than pure SPAES membrane and Nafion117 membrane. The methanol permeability coefficients of the SPAES-g-SPVA membranes decrease from 3.41 × 10−7 cm2 s−1 to 1.67 × 10−7 cm2 s−1 with the increase of SPVA content. And the proton conductivity of all the membranes is higher than 15 mS cm−1 at 25°C. Moreover, SPAES-g-SPVA membranes exhibit high proton selectivity. Especially, SPAES-g-SPVA-30% membrane has the highest proton selectivity, which is nearly five times higher than Nafion117.

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Synthesis and characterization of heteropolyacid (H3PW12O40) embedded poly (vinyl alcohol)-g-acrylamide copolymeric membranes and their evaluation for proton exchange membrane fuel cells

Materials Science for Energy Technologies ◽

10.1016/j.mset.2020.10.007 ◽

2020 ◽

Vol 3 ◽

pp. 846-852

Author(s):

Mallikarjunagouda B. Patil

Keyword(s):

Fuel Cells ◽

Vinyl Alcohol ◽

Proton Exchange Membrane ◽

Proton Exchange ◽

Synthesis And Characterization ◽

Poly Vinyl Alcohol ◽

Exchange Membrane

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Casting of Poly Hydroxybutarate/Poly (vinyl alcohol)Membranes for Proton Exchange Fuel Cells

Electrochimica Acta ◽

10.1016/j.electacta.2014.09.163 ◽

2014 ◽

Vol 150 ◽

pp. 290-297 ◽

Cited By ~ 12

Author(s):

M.M. El-Toony ◽

E.E. Abdel-Hady ◽

N.A. El-Kelsh

Keyword(s):

Fuel Cells ◽

Vinyl Alcohol ◽

Proton Exchange ◽

Poly Vinyl Alcohol

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Interpenetrating network-forming sulfonated poly(vinyl alcohol) proton exchange membranes for direct methanol fuel cell applications

International Journal of Hydrogen Energy ◽

10.1016/j.ijhydene.2011.06.025 ◽

2011 ◽

Vol 36 (18) ◽

pp. 11936-11945 ◽

Cited By ~ 51

Author(s):

Chi-Yung Tseng ◽

Yun-Sheng Ye ◽

Kuei-Yu Kao ◽

Jorphin Joseph ◽

Wei-Chung Shen ◽

...

Keyword(s):

Fuel Cell ◽

Vinyl Alcohol ◽

Direct Methanol Fuel Cell ◽

Proton Exchange Membranes ◽

Proton Exchange ◽

Poly Vinyl Alcohol ◽

Interpenetrating Network ◽

Direct Methanol ◽

Methanol Fuel Cell ◽

Sulfonated Poly

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Synthesis of proton exchange membranes for dual-chambered microbial fuel cells

Journal of the Serbian Chemical Society ◽

10.2298/jsc170902016d ◽

2018 ◽

Vol 83 (5) ◽

pp. 611-623 ◽

Cited By ~ 4

Author(s):

Sandeep Dharmadhikari ◽

Prabir Ghosh ◽

Manivannan Ramachandran

Keyword(s):

Fuel Cells ◽

Water Uptake ◽

Microbial Fuel Cells ◽

Oxygen Demand ◽

Proton Exchange Membranes ◽

Exchange Capacity ◽

Proton Exchange ◽

Poly Vinyl Alcohol ◽

Precursor Material ◽

Anodic Chamber

Proton exchange membranes (PEMs) were synthesized using three different compositions of poly(oxyethylene) (POE), poly(vinyl alcohol) (PVA), chitosan (CS) and phosphoric acid (PA) in weight ratios of 1:1:1:1, 1:2:1:1 and 1:3:1:1 by physical blending and the casting method. Water uptake of the membrane increases with increasing concentration of PVA. A higher percentage of water uptake signifies a higher ion exchange capacity (IEC) of the synthesized membrane. The synthesized membranes were evaluated in microbial fuel cells (MFCs) and the performance observed. The synthesized membranes were characterized for identification of precursor material and inter polymer interactions using X-ray diffraction (XRD) and Fourier transform infrared (FTIR) spectroscopy analysis, respectively. The removal of chemical oxygen demand (COD) depends on the microbial activity in the anodic chamber. In the present study, the composition of the membrane was optimized and compared with other membranes that had been synthesized by different compositions of all materials. COD removal in the MFC-3 setup connected with an M-3 membrane was found to be 88 %.

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