Hydroxide conducting polymerized ionic liquid pentablock terpolymer anion exchange membranes with methylpyrrolidinium cations

A commercially scalable polymerized ionic liquid (PIL) pentablock terpolymer anion exchange membrane (AEM) was investigated for use in alkaline fuel cells (AFCs). The transparent, flexible AEMs exhibited hydroxide ion conductivities of 44 mS/cm at 60 °C in liquid water. AEMs demonstrated excellent a...

Full description

Saved in:
Bibliographic Details
Published in:Polymer (Guilford) 2018-01, Vol.134, p.221-226
Main Authors: Meek, Kelly M., Sun, Rui, Willis, Carl, Elabd, Yossef A.
Format: Article
Language:English
Subjects:
Addition polymerization
Anion exchange
Anion exchange membrane
Anion exchanging
Block copolymer
Cation exchanging
Cationic polymerization
Cations
Conducting polymers
Conductivity
Copolymers
Fuel cells
Fuel technology
Ionic liquids
Membranes
NMR
Nuclear magnetic resonance
Platinum
Polyelectrolyte
Polymerization
Polymers
Terpolymers
Water
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A commercially scalable polymerized ionic liquid (PIL) pentablock terpolymer anion exchange membrane (AEM) was investigated for use in alkaline fuel cells (AFCs). The transparent, flexible AEMs exhibited hydroxide ion conductivities of 44 mS/cm at 60 °C in liquid water. AEMs demonstrated excellent alkaline chemical stability, with no change in ion conductivity after exposure to 1 M KOH solution at 60 °C for 1 week. Additionally, 1H NMR analysis of the analogous polymerized ionic liquid (PIL) homopolymer revealed no degradation in 0.5 M KOH solution at 60 °C for 1 week. These results indicate that this commercially scalable multiblock polymer is a highly conductive, chemically stable, robust AEM, suitable for use in low-cost (platinum-free), long-lasting, solid-state alkaline fuel cells. [Display omitted] •A commercially scalable AEM demonstrated high hydroxide ion conductivities of 44 mS/cm at 60 °C in liquid water.•AEM maintained high conductivity after exposure to 1 M KOH solution at 60 °C for 1 week.•The analogous PIL showed no degradation in 0.5 M KOH solution at 60 °C for 1 week.
ISSN:0032-3861
1873-2291
DOI:10.1016/j.polymer.2017.11.050