Changes in permselectivity of radiation-grafted anion-exchange membranes with different cationic headgroup chemistries are primarily due to water content differences

Abstract

In a prior paper [Bance-Soualhi et al., J. Mater. Chem. A, 2021, 9, 22025], we showed that the crosslinking of radiation-grafted anion-exchange membranes (RG-AEM) was necessary to obtain high enough...

Novel Crosslinked Anion Exchange Membranes Based on Thermally Cured Epoxy Resin: Synthesis, Structure and Mechanical and Ion Transport Properties

“…The addition of diluent can also be considered as a decrease in crosslinking density–the higher the diluent content, the more the system can expand during hydration. The described patterns are often observed in the correlation between the composition and properties of anion exchange membranes based on different polymers [ 39 , 40 , 41 , 42 ].…”

Aryl ether-free polymer electrolytes for electrochemical and energy devices

“…, the water uptakes of TMA types are generally less than MPIP analogues. 372,415 Crosslinking can be used to reduce the excessive levels of swelling on hydration, but this can have a negative impact on other properties such as conductivity. 373,421…”

“…Radiation-grafted (RG) polymers are being investigated for use in a wide variety of applications across many fields ( e.g. , clean energy, environmental remediation, healthcare) including electrolyte membranes for low- and high-temperature polymer electrolyte fuel cells and membrane-based water electrolysers, 366–370 CO 2 electrolysis to high-value chemicals; 371 CO 2 adsorbents; 365 ion exchange membranes and separators for ED/RED, 372–374 RFBs, 367,375,376 actuators, 377 Li-ion batteries, 378 and supercapacitors; 367 biofouling-resistant membranes for microfiltration; 379 materials for the recovery, extraction, and separation of inorganics including heavy metals ions; 380,381 chromatography materials for protein purification; 382 biomaterials for tissue engineering and engineered skin; 383 and UV absorbers. 384…”

“…The most common monomer used to fabricate RG-AEMs is vinylbenzyl chloride (Scheme 26). 114,371–373,388,389,391,392,394,395,405–410 On amination/quaternization, cationic groups are introduced, resulting in an anion-conducting material, and the most commonly encountered amine is trimethylamine (TMA), which yields benzyltrimethylammonium headgroups. This class of RG-AEM has ease of handling, high hydroxide conductivities, and rapid water diffusion dynamics.…”

Powering the hydrogen future: current status and challenges of anion exchange membrane fuel cells

“…Moreover, when driven at 0.6 A cm −2 for 440 h, the AEMFC demonstrated a mere 7% voltage loss, showcasing its exceptional durability. Ongoing research on polyethylene-based AEMs 92–94 continues to inspire numerous subsequent developments in the field. The polynorbornene polymer (2) features a remarkably high IEC (3.59), which accounts for its high conductivity.…”