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.

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 Synthesis of novel sulfonated poly(arylene ether)s containing a tetra-trifluoromethyl side chain and multi-phenyl for proton exchange membrane fuel cell application

RSC Advances ◽  
2017 ◽  
Vol 7 (53) ◽  
pp. 33068-33077 ◽  
Author(s):  
Yi-Chiang Huang ◽  
Hsu-Feng Lee ◽  
Yu-Chao Tseng ◽  
Chun-Che Lee ◽  
Mei-Ying Chang ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Ion Exchange ◽  
Proton Exchange Membrane ◽  
Proton Exchange ◽  
Side Chain ◽  
Arylene Ether ◽  
Fuel Cell Application ◽  
Sulfonated Polymers ◽  
Exchange Membrane ◽  
Sulfonated Poly

Herein, a series of novel sulfonated poly(arylene ether)s consisting of tetra-trifluoromethyl-substituted multi-phenyl was synthesized and post-sulfonated to obtain sulfonated polymers with ion exchange capacities ranging from 1.27 to 2.53 mmol g−1.

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

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