Poly(bis-arylimidazoliums) Possessing High Hydroxide Ion Exchange Capacity and High Alkaline Stability

Overview

Journal Nat Commun

Specialty Biology

Date 2019 May 26

PMID 31127108

Citations 28

Authors

Jiantao Fan

Sapir Willdorf-Cohen

Eric M Schibli

Zoe Paula

Wei Li

Thomas J G Skalski

Ania Tersakian Sergeenko

Amelia Hohenadel

Barbara J Frisken

Emanuele Magliocca

William E Mustain

Charles E Diesendruck

Dario R Dekel

Steven Holdcroft

Affiliations

Soon will be listed here.

Abstract

Solid polymer electrolyte electrochemical energy conversion devices that operate under highly alkaline conditions afford faster reaction kinetics and the deployment of inexpensive electrocatalysts compared with their acidic counterparts. The hydroxide anion exchange polymer is a key component of any solid polymer electrolyte device that operates under alkaline conditions. However, durable hydroxide-conducting polymer electrolytes in highly caustic media have proved elusive, because polymers bearing cations are inherently unstable under highly caustic conditions. Here we report a systematic investigation of novel arylimidazolium and bis-arylimidazolium compounds that lead to the rationale design of robust, sterically protected poly(arylimidazolium) hydroxide anion exchange polymers that possess a combination of high ion-exchange capacity and exceptional stability.

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