Custom-made sulfonated poly (ether sulfone) nanocomposite proton exchange membranes using exfoliated molybdenum disulfide nanosheets for DMFC applications

Divya, Kumar; Saraswathi, Meenakshi Sundaram Sri Abirami; Rana, Dipak; Alwarappan, Subbiah; Nagendran, A.

doi:10.1016/j.polymer.2018.05.054

Cited by 56 publications

(29 citation statements)

References 37 publications

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“…In accordance with the literature reports, Nafion ® membrane is the standard material for fuel cell applications [13][14][15][16][17]. However, the technology has to resolve the issues associated with Nafion based membranes such as expensive and complex synthesis, low proton conduction at high temperatures and environmental concern [18][19][20]. Arylene hydrocarbon based polymer electrolyte membrane is identified as one of the suitable alternative to Nafion towards electrolysis and fuel cell applications.…”

Section: Introductionmentioning

confidence: 88%

Unprecedented SPEEK-trimetal Oxide Composites: Physicochemical and Electrochemical Performance in Fuel Cell

Sivasubramanian¹,

Thangavelu²,

Mahimai³

et al. 2021

Preprint

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Advanced polymer composite membranes were prepared from a linear sulfonated poly(ether ether ketone) (SPEEK) with bismuth cobalt zinc oxide [BCZO, (Bi2O3)0.07(CoO)0.03(ZnO)0.90] nanopowder as an inorganic additive for the application of H2-O2 fuel cell. Morphology data tend to provide evidences for the incorporation of BCZO into SPEEK polymer. Indeed, composite membrane loaded with 7.5 wt.% of BCZO was identified to uptake maximum water, while the pristine SPEEK membrane occurred to retain only 24.0 %. As such SPEEK matrix loaded with 7.5 wt.% of BCZO was found to exhibit the maximum proton conductivity of 0.030 S cm-1, whereas the pristine membrane was restricted to 0.021 S cm-1. Evidently, TGA profile of the composite membrane was measured to exhibit sufficient thermal stability to employ as electrolyte in fuel cell. The membrane electrode assembly of pristine SPEEK and SP-BCZO-7.5 wt.% membranes were fabricated and studied for their electrochemical performance. Indeed, the characteristics of newly developed composite membranes led to possess incredible feature towards fuel cell applications.

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Section: Introductionmentioning

confidence: 88%

Unprecedented SPEEK-trimetal Oxide Composites: Physicochemical and Electrochemical Performance in Fuel Cell

Sivasubramanian¹,

Thangavelu²,

Mahimai³

et al. 2021

Preprint

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“…However, the water molecules have a plasticizing effect on the membrane which decreases its mechanical stability. Moreover, these dimensional instabilities will lead to the separation of the membrane from the electrodes, which would give rise to an electrochemical instability of the MEA [42,43].…”

Section: Water Uptake and Swelling Ratiomentioning

confidence: 99%

“…The incorporation of the nanocomposite is seen to alter the surface of the membranes increasing the surface roughness. The formation of hydrogen bonds between the sulfonic acid groups of the sCMK-3 and the SPEEK leads to the creation of rougher surfaces [43]. Increase in the SPEEK content significantly contributes to the changes in surface morphology (Fig.…”

Section: Membrane Morphology-field Emission Scanning Electron Microscopy and Atomic Force Microscopymentioning

confidence: 99%

Preparation and characterization of proton exchange polyvinylidene fluoride membranes incorporated with sulfonated mesoporous carbon/SPEEK nanocomposite

2020

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Sulfonation of mesoporous carbon CMK-3 (sCMK-3) prepared by nano-casting technique was carried out post synthesis using one-step process. The incorporation of the acid groups was confirmed using XRD, Raman spectroscopy, FTIR, SEM, TEM and BET isotherm. The sCMK-3 was incorporated into sulfonated poly(ether ether ketone) to form a nanocomposite which was introduced into polyvinylidene fluoride matrix to form a proton exchange membrane. The physicochemical characteristics of the nanocomposite incorporated membranes were characterized using FTIR, ionic exchange capacity, water uptake, swelling ratio, mechanical stability and TGA. The nanocomposite incorporated membranes showed greater surface wettability and higher ion-exchange capacity. The presence of the -SO 3 H acid groups plays a major role in improving the proton conductivity through the Grotthuss-type mechanism. M4 membrane was identified to be a suitable replacement in the DMFC as it had sufficiently high tensile strength (862.2 MPa), high proton conductivity (0.081 S cm −1 ) at 45 °C and ultra-low methanol permeability (2.17 × 10 −8 cm 2 s −1 ). No evident hydrolytic damage could be identified and had sufficiently high thermal stability and hence can be proposed as a suitable alternative for Nafion membranes in high temperature, low humidity DMFC applications.

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“…Composite membranes generated from sulfonated poly(ether ether ketone) (SPEEK) were found to exhibit enhanced proton conductivity upon the addition of tungstophosphoric acid, silicon dioxide, zirconium dioxide, and titanium dioxide. 8 Incorporation of inorganic nanofillers, such as silica, 9 titanium dioxide (TiO 2 ), 10 ceria, 11 zirconia, 12 barium zirconate, 13 iron titanate, 14 lanthanum cerate, 15 single-walled carbon nanotubes, 16 graphene oxide, 17 and molybdenum disulfide, 18 into the polymer matrix was found to improve the physicochemical properties of polymer electrolyte membrane (PEM) materials.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of sulfonated poly(ether ether ketone)/zinc cobalt oxide composite membranes for fuel cell applications

Prathap

Kulasekaran

Berlina

et al. 2020

High Performance Polymers

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A new series of polymer composite membranes was fabricated using a linear sulfonated poly(ether ether ketone) (SPEEK) polymer with zinc cobalt oxide (ZCO) as an inorganic filler and evaluated for fuel cell applications. SPEEK was obtained by the direct sulfonation of PEEK using concentrated sulfuric acid, and appropriate quantities of ZCO were loaded into it to yield the polymer composites. Proton nuclear magnetic resonance studies revealed the degree of sulfonation of SPEEK to be 55%, while morphological studies confirmed the successful incorporation of inorganic fillers into the polymer matrix. To evaluate the suitability of the prepared composite membranes for fuel cell applications, their physicochemical properties were studied in detail. The pristine SPEEK membrane exhibited a proton conductivity of 0.009 S cm−1 at 30°C, whereas the values for the composite membranes loaded with 2.5 to 10 wt% of ZCO were in the range 0.012–0.020 S cm−1. Moreover, the composite membranes showed excellent thermal stability up to 370°C. Indeed, the membranes obtained by the incorporation of ZCO into the SPEEK polymer show potential for fuel cell applications.

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Custom-made sulfonated poly (ether sulfone) nanocomposite proton exchange membranes using exfoliated molybdenum disulfide nanosheets for DMFC applications

Cited by 56 publications

References 37 publications

Unprecedented SPEEK-trimetal Oxide Composites: Physicochemical and Electrochemical Performance in Fuel Cell

Unprecedented SPEEK-trimetal Oxide Composites: Physicochemical and Electrochemical Performance in Fuel Cell

Preparation and characterization of proton exchange polyvinylidene fluoride membranes incorporated with sulfonated mesoporous carbon/SPEEK nanocomposite

Synthesis and characterization of sulfonated poly(ether ether ketone)/zinc cobalt oxide composite membranes for fuel cell applications

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