Alkaline stable imidazolium-based ionomers containing poly(arylene ether sulfone) side chains for alkaline anion exchange membranes

作者：Si, Zhihong; Sun, Zhe; Gu, Fenglou; Qiu, Lihua; Yan, Feng^*

来源：Journal of Materials Chemistry A, 2014, 2(12): 4413-4421.

DOI：10.1039/c3ta15178f

• FUEL-CELL APPLICATIONS
• FUNCTIONALIZED POLYETHYLENE
• POLYMER ELECTROLYTES
• HEAD-GROUPS
• HYDROXIDE
• DEGRADATION
• STABILITY
• CONDUCTIVITY
• COPOLYMERS
• SALTS

Solvent processable anion exchange membranes (AEMs) containing imidazolium cation and poly(arylene ether sulfone) side chains were prepared via the ionization of poly(4-vinylbenzyl chloride)-graft-poly(arylene ether sulfone) copolymers, and followed by anion exchange with hydroxide ions. The ionized copolymers produced ductile, transparent membranes which possess a relatively high ionic conductivity (up to 1.6 x 10(-2) S cm(-1) at room temperature). The yielded membranes are soluble in polar aprotic solvents, such as DMSO and DMF, while insoluble in water and methanol. The synthesized AEMs show good alkaline stability in 1 M KOH at 60 degrees C for 20 days, as well as high dimensional and thermal stability. These results should pave way to the practical application of this kind of AEM in alkaline fuel cells.

• 出版日期2014
• 单位苏州大学