Enhanced proton conductivity and dimensional stability of proton exchange membrane based on sulfonated poly(arylene ether sulfone) and graphene oxide

2018 ◽  
Vol 103 ◽  
pp. 142-149 ◽  
Author(s):  
RiMing Chen ◽  
FuZhong Xu ◽  
Kang Fu ◽  
JingJing Zhou ◽  
Quan Shi ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Proton Conductivity ◽  
Dimensional Stability ◽  
Proton Exchange Membrane ◽  
Proton Exchange ◽  
Arylene Ether ◽  
Exchange Membrane ◽  
Sulfonated Poly

scholarly journals Sulfonated poly(arylene ether nitrile)-based composite membranes enhanced with Ca2+ bridged carbon nanotube-graphene oxide networks

2022 ◽  
Author(s):  
Mengna Feng ◽  
Yan Ma ◽  
JiaJia Chang ◽  
Jing Lin ◽  
Ying Xu ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Proton Conductivity ◽  
Dimensional Stability ◽  
Proton Exchange Membrane ◽  
Three Dimensional ◽  
Composite Membranes ◽  
Proton Exchange ◽  
Dimensional Structure ◽  
Arylene Ether ◽  
Sulfonated Poly

Abstract As the core component of proton exchange membrane fuel cell, proton exchange membranes (PEM) have attracted much attention of researchers. To trade-off the proton conduction, dimensional stability and anti-oxidation ability, graphene oxide (GO) and acidized multi-walled carbon nanotubes (MWCNT) using calcium ion as coordination bridge (GO-Ca2+-MWCNT) was synthesized, and then incorporating into sulfonated poly(arylene ether nitrile) (SPEN) to fabricate SPEN/GO-Ca2+-MWCNT organic-inorganic composite membranes by solution-casting method and explore the influence of varying loading on performances as PEM. It was found that the proton conductivity of the composite membranes was higher than that of SPEN, while maintaining better dimensional stability, excellent anti-oxidation ability and good mechanical properties. All of these were attributed to the formation of three-dimensional structure between GO and MWCNT bridged by Ca2+. Particularly, the SPEN/GO-Ca2+-MWCNT-1 composite membrane exhibited excellent tensile strength of 71.45 MPa, better thermal stability as well as high proton conductivity (0.054 S/cm at 30 ℃, and 0.193 S/cm at 90 ℃), above 10-2 S/cm, satisfying the requirement of fuel cells. All in all, the results indicate that the filler with three-dimensional network structure can effectively improve the performances of SPEN, and the prepared composite membranes show potential applications in many fields.

Preparation and Characterization of Proton Exchange Membrane Based on Sulfonated Poly(arylene ether sulfone)/Polyacrylonitrile (SPAES/PAN)

2014 ◽  
Vol 577 ◽  
pp. 53-57
Author(s):  
Hang Wei ◽  
Guang Li
Keyword(s):  
Oxidative Stability ◽  
Proton Conductivity ◽  
Water Uptake ◽  
Proton Exchange Membrane ◽  
Proton Exchange ◽  
Arylene Ether ◽  
Blend Membranes ◽  
Exchange Membrane ◽  
Sulfonated Poly

Sulfonated poly (arylene ether sulfone) s (SPAESs) exhibit good proton conductivity, thermal and mechanical properties, could act as candidates of proton exchange membranes for fuel cells. At the same time, the poor oxidative stability and excessive swelling ratio of SPAESs bring limitations for its further use. In this article, PAN was employed to mix with SPAES, and then SPAES/PAN blend membranes were prepared from the blend solution by casting. The water uptake, dimensional and oxidative stability, proton conductivity were measured with respect to the addition content of PAN, the phase morphology of the resultant SPAES/PAN were also observed by SEM. The results explained that the corporation of PAN into SPAES could reduce the water uptake and improve the oxidative stability of the obtained membranes compared with the pristine SPAES membrane. That the PAN phase distributed as separated domains in SPAES matrix was found, the interaction between SPAES and PAN may be present, which is responsible for the improvement of dimensional and oxidative stability. Although the proton conductivity of the blend membranes became reduced with increase of PAN content in the SPAES/PAN blend, the conductivity of 0.0265S/cm at 30°C could still be reached, satisfying the requirement for proton exchange membrane Fuel Cell

Graft octa-sulfonated poly(arylene ether) for high performance proton exchange membrane

2015 ◽  
Vol 3 (24) ◽  
pp. 12698-12708 ◽  
Author(s):  
Sinan Feng ◽  
Guibin Wang ◽  
Haibo Zhang ◽  
Jinhui Pang
Keyword(s):  
Dimensional Stability ◽  
High Performance ◽  
Proton Exchange Membrane ◽  
Proton Exchange ◽  
Ionic Clusters ◽  
High Proton Conductivity ◽  
Arylene Ether ◽  
High Proton ◽  
Exchange Membrane ◽  
Sulfonated Poly

A novel octa-sulfonated poly(arylene ether) was combined with a longer hydrophobic backbone and grafted with ionic clusters, exhibiting high proton conductivity and excellent dimensional stability.

scholarly journals Ameliorated Performance of Sulfonated Poly(Arylene Ether Sulfone) Block Copolymers with Increased Hydrophilic Oligomer Ratio in Proton-Exchange Membrane Fuel Cells Operating at 80% Relative Humidity

Polymers ◽  
2020 ◽  
Vol 12 (9) ◽  
pp. 1871 ◽  
Author(s):  
Ae Kim ◽  
Mohanraj Vinothkannan ◽  
Kyu Lee ◽  
Ji Chu ◽  
Sumg Ryu ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Relative Humidity ◽  
Proton Conductivity ◽  
Proton Exchange Membrane ◽  
Exchange Capacity ◽  
Proton Exchange ◽  
Arylene Ether ◽  
Poly Condensation ◽  
Exchange Membrane ◽  
Sulfonated Poly

We designed and synthesized a series of sulfonated poly(arylene ether sulfone) (SPES) with different hydrophilic or hydrophobic oligomer ratios using poly-condensation strategy. Afterward, we fabricated the corresponding membranes via a solution-casting approach. We verified the SPES membrane chemical structure using nuclear magnetic resonance (1H NMR) and confirmed the resulting oligomer ratio. Field-emission scanning electron microscope (FE-SEM) and atomic force microscope (AFM) results revealed that we effectively attained phase separation of the SPES membrane along with an increased hydrophilic oligomer ratio. Thermal stability, glass transition temperature (Tg) and membrane elongation increased with the ratio of hydrophilic oligomers. SPES membranes with higher hydrophilic oligomer ratios exhibited superior water uptake, ion-exchange capacity, contact angle and water sorption, while retaining reasonable swelling degree. The proton conductivity results showed that SPES containing higher amounts of hydrophilic oligomers provided a 74.7 mS cm−1 proton conductivity at 90 °C, which is better than other SPES membranes, but slightly lower than that of Nafion-117 membrane. When integrating SPES membranes with proton-exchange membrane fuel cells (PEMFCs) at 60 °C and 80% relative humidity (RH), the PEMFC power density exhibited a similar increment-pattern like proton conductivity pattern.

Sulfonated poly(arylene ether sulfone) composite membranes having poly(2,5-benzimidazole)-grafted graphene oxide for fuel cell applications

2015 ◽  
Vol 3 (41) ◽  
pp. 20595-20606 ◽  
Author(s):  
Taeyun Ko ◽  
Kihyun Kim ◽  
Min-Young Lim ◽  
Sang Yong Nam ◽  
Tae-Ho Kim ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Fuel Cell ◽  
Proton Exchange Membrane ◽  
Composite Membranes ◽  
Proton Exchange ◽  
Arylene Ether ◽  
Exchange Membrane ◽  
Sulfonated Poly ◽  
Thermally Treated

Sulfonated poly(arylene ether sulfone) (SPAES) composite membranes were prepared using thermally-treated graphene oxide (GO) and poly(2,5-benzimidazole)-grafted graphene oxide (ABPBI-GO) as fillers for proton exchange membrane fuel cell (PEMFC) applications.

Dual sulfonated poly(arylene ether ketone) membrane grafted with 15-crown-5-ether for enhanced proton conductivity and anti-oxidation stability

2019 ◽  
Vol 4 (4) ◽  
pp. 901-911 ◽  
Author(s):  
Dinh Cong Tinh Vo ◽  
Minh Dat Thinh Nguyen ◽  
Dukjoon Kim
Keyword(s):  
Fuel Cell ◽  
Proton Conductivity ◽  
Proton Exchange Membrane ◽  
Oxidation Stability ◽  
Critical Issue ◽  
Proton Exchange ◽  
Arylene Ether ◽  
Ether Ketone ◽  
Exchange Membrane ◽  
Sulfonated Poly

In the proton exchange membrane fuel cell, durability has recently been the critical issue in its operation.

scholarly journals Enhanced Ion Cluster Size of Sulfonated Poly (Arylene Ether Sulfone) for Proton Exchange Membrane Fuel Cell Application

Polymers ◽  
2021 ◽  
Vol 13 (7) ◽  
pp. 1111
Author(s):  
Prem P. Sharma ◽  
Vo Dinh Cong Tinh ◽  
Dukjoon Kim
Keyword(s):  
Fuel Cell ◽  
Proton Conductivity ◽  
Cluster Size ◽  
Proton Exchange Membrane ◽  
Proton Exchange ◽  
Arylene Ether ◽  
Fuel Cell Application ◽  
Exchange Membrane ◽  
Sulfonated Poly ◽  
Ion Cluster

A successful approach towards enhancement in ion cluster size of sulfonated poly (arylene ether sulfone) (SPAES)-based membranes has been successfully carried out by encapsulating basic pendent branches as side groups. Modified SPAES was synthesized by condensation polymerization followed by bromination with N-bromosuccinamide (NBS) and sulfonation by ring opening reaction. Various molar ratios of branched polyethyleneimine (PEI) were added to the SPAES and the developed polymer was designated as SPAES-x-PEI-y, where x denoted the number of sulfonating acid group per polymer chain and y represents the amount of PEI concentration. Polymer synthesis was characterized by 1H-NMR (Nuclear magnetic resonance) and FT-IR (Fourier-transform infrared spectroscopy) analysis. A cumulative trend involving enhanced proton conductivity of the membranes with an increase in the molar ratio of PEI has been observed, clearly demonstrating the formation of ionic clusters. SPAES-140-PEI-3 membranes show improved proton conductivity of 0.12 Scm−1 at 80 °C. Excellent chemical stability was demonstrated by the polymer with Fenton’s test at 80 °C for 24 h without significant loss in proton conductivity, owing to the suitability of the synthesized hybrid membrane for electrochemical application. Moreover, a single cell degradation test was conducted at 80 °C showing a power density at a 140 mWcm−2 value, proving the stable nature of synthesized membranes for proton exchange membrane fuel cell application.

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