Four-arm star-shaped high-performance poly(aryl piperidine) anion exchange membranes for fuel cells

Anion exchange membrane fuel cells (AEMFCs) are a new generation of energy conversion technology that excels proton exchange membrane fuel cells in terms of oxygen reduction kinetics. The development of high-performance and durable anion exchange membranes (AEMs) has been a top priority for AEMFCs....

Full description

Saved in:
Bibliographic Details
Published in:Journal of materials chemistry. A, Materials for energy and sustainability Materials for energy and sustainability, 2024-03, Vol.12 (11), p.6341-635
Main Authors: Han, Long, Gong, Shoutao, Zhang, Xinli, Yang, Min, Yan, Xiaoming, He, Gaohong, Zhang, Fengxiang
Format: Article
Language:English
Subjects:
Anion exchange
Anion exchanging
Conductivity
Copolymerization
Energy conversion
Fuel cells
Fuel technology
Ion channels
Membranes
Packing density
Piperidine
Polymers
Proton exchange membrane fuel cells
Sodium hydroxide
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:Anion exchange membrane fuel cells (AEMFCs) are a new generation of energy conversion technology that excels proton exchange membrane fuel cells in terms of oxygen reduction kinetics. The development of high-performance and durable anion exchange membranes (AEMs) has been a top priority for AEMFCs. In this work, we design and fabricate a novel series of AEMs by co-polymerizing tetraphenylmethane with 1-methyl-4-piperidone and p -terphenyl and subsequent quaternization of the resulting polymer. This strategy creates four-arm star shaped polymer components in the fabricated AEMs so that the polymer chain packing density is lowered, creating a high fraction of free volume in the membrane, which can help build ion channels with lower OH − transport resistance. The resulting qPTTP-7 AEM shows a markedly improved ion conductivity (142.71 mS cm −1 at 80 °C). After 1000, 2000 and 3000 h treatments in 1 M NaOH at 80 °C, the membrane showed an ion conductivity retention rate of 98%, 93% and 86%, respectively. With such an AEM, the H 2 -O 2 single cell yields a peak power density of 1.37 W cm −2 at 80 °C, and the fuel cell can operate at a constant current over 150 h without much voltage decay. Anion exchange membrane fuel cells (AEMFCs) are a new generation of energy conversion technology that excels proton exchange membrane fuel cells in terms of oxygen reduction kinetics.
ISSN:2050-7488
2050-7496
DOI:10.1039/d4ta00092g