Anion exchange membrane fuel cells are recognized as promising energy conversion devices due to their attractive advantages in basic operating conditions. However, the greater application is still impeded by the low hydroxide conductivity and poor alkaline stability in anion exchange membranes. To easily control and achieve high-performing alkaline stability, ionic conductivity, and mechanical property to satisfy the alkaline fuel cell application, we investigate a series of polymers with different cation groups, varied crosslink density, and hydrophobic/hydrophilic ratio via a the Friedel-Crafts (F-C) hydroxylation reaction. In our work, two different polymer platforms have been established based on the same synthesis rationale. Periodic alkaline stability tracking reveals the distinct effect of cationic group position on the chemical stability in alkaline media. The structure-property relationships between polymer sequence, mesoscale structure, ionic conductivity, and alkaline stability are elucidated. Meanwhile, we compare the manipulation of hydrophobicity and crosslink density in the investigation of mechanical durability of anion exchange membranes.

Low cost, highly performance anion exchange membranes via one-pot polymerization

Where thousands of chemistry professionals meet to share ideas and advance scientific and technical knowledge. Spring 2023 abstracts, posters, and presentations will launch at the end of March.

ACS Spring 2023

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.