Novel polyolefin based alkaline polymer electrolyte membrane for vanadium redox flow batteries

Anion exchange membranes based on long side-chain quaternary ammonium-functionalized poly(arylene piperidinium)s for vanadium redox flow batteries

“…Recently, AEMs based on polymers without ether bonds in the main chain have attracted increasing attention in the AEM fuel cell [44], water electrolysis [45], and VRFB [46] communities. For example, similar to Lee et al [47], we have explored QAgrafted side-chain groups into polybenzimidazole (PBI) backbone (e.g., PBI-42% EPTMA) by adopting 2,3-epoxypropyltrimethylammonium chloride (EPTMA-Cl) as the grafting agent via the N-substitution reaction [48].…”

Improving proton conductivity and ionic selectivity of porous polyolefin membranes by chitosan deposition

“…The results of the proton conductivity of modified membranes exceed the corresponding results for polyolefin separators modified with ion‐exchange polymers where the proton conductivity values do not exceed 50 mS·cm −1. 30,31 …”

Recent Development in Composite Membranes for Flow Batteries

“…Thus, the top selectivel ayers are designed for accommodating fundamentalr equirements.A dditionally, based on their applications, specific features of selective layers are required, such as high permeability, [30a, 33b] anti-oxidation, [39] anti-fouling, [40] specific affinity, [41] and high rigidity. [41,42] Occasionally,more than one dense layer has to be used due to multiple demands. For instance, as andwich bipolar membrane was fabricatedt os atisfy the need for both high ionic conductivity and high ion selectivity.…”

“…Thus, the top selective layers are designed for accommodating fundamental requirements. Additionally, based on their applications, specific features of selective layers are required, such as high permeability, anti‐oxidation, anti‐fouling, specific affinity, and high rigidity . Occasionally, more than one dense layer has to be used due to multiple demands.…”