scholarly journals UV-crosslinked poly(arylene ether sulfone) – LAPONITE® nanocomposites for proton exchange membranes

RSC Advances ◽  
2017 ◽  
Vol 7 (45) ◽  
pp. 28358-28365 ◽  
Author(s):  
Sun Hwa Lee ◽  
Won Jun Lee ◽  
Tae Kyoung Kim ◽  
Mustafa K. Bayazit ◽  
Sang Ouk Kim ◽  
...  
Keyword(s):  
Fuel Cells ◽  
High Performance ◽  
Proton Exchange Membrane ◽  
Proton Exchange Membranes ◽  
Proton Exchange ◽  
Clay Nanocomposites ◽  
Arylene Ether ◽  
Exchange Membrane ◽  
Sulfonated Poly

UV-crosslinked sulfonated poly(arylene sulfone)/clay nanocomposites are fabricated by incorporating UV-crosslinkable monomers, bridge molecules, and clay nanofillers for high performance proton exchange membrane fuel cells.

Crosslinked sulfonated poly(arylene ether sulfone)/silica hybrid membranes for high temperature proton exchange membrane fuel cells

2013 ◽  
Vol 51 ◽  
pp. 22-28 ◽  
Author(s):  
Jeong Hwan Chun ◽  
Sang Gon Kim ◽  
Ji Young Lee ◽  
Dong Hun Hyeon ◽  
Byung-Hee Chun ◽  
...  
Keyword(s):  
Fuel Cells ◽  
High Temperature ◽  
Proton Exchange Membrane ◽  
Proton Exchange ◽  
Hybrid Membranes ◽  
Arylene Ether ◽  
Exchange Membrane ◽  
Silica Hybrid ◽  
Sulfonated Poly

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.

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