Magnetic-field-oriented mixed-valence-stabilized ferrocenium anion-exchange membranes for fuel cells

Xin Liu, Na Xie, Jiandang Xue, Mengyuan Li, Chenyang Zheng, Junfeng Zhang, Yanzhou Qin, Yan Yin (), Dario R. Dekel and Michael D. Guiver ()
Additional contact information
Xin Liu: Tianjin University
Na Xie: Tianjin University
Jiandang Xue: Tianjin University
Mengyuan Li: Tianjin University
Chenyang Zheng: Tianjin University
Junfeng Zhang: Tianjin University
Yanzhou Qin: Tianjin University
Yan Yin: Tianjin University
Dario R. Dekel: Technion, Israel Institute of Technology
Michael D. Guiver: Tianjin University

Nature Energy, 2022, vol. 7, issue 4, 329-339

Abstract: Abstract Through-plane (TP) conducting pathways in anion-exchange membranes (AEMs) are desirable for AEM fuel cells as they serve as short and efficient routes for hydroxide ion transport between electrodes, improving power output. Electric and magnetic fields have previously been used to create TP-oriented structures in AEMs, but with modest performance gains. Here we use paramagnetic ferrocenium polymers to prepare TP-oriented AEMs under a magnetic field. The magnetic field induces a mixed-valence state, which effectuates higher anion dissociation and enhanced alkali/redox stability. Our AEMs display a promising TP hydroxide conductivity of ~160 mS cm−1 at 95 °C in water, and no appreciable hydroxide conductivity loss over 4,320 h at 95 °C in alkali. The assembled fuel cells achieve a power output of 737 mW cm−2 at 80 °C and 80% relative humidity, and a durability of 3.9% voltage loss and 2.2% high-frequency resistance increase over 500 h at 500 mA cm−2, 120 °C and 40% relative humidity.

Date: 2022
References: Add references at CitEc
Citations: View citations in EconPapers (2)

Downloads: (external link)
https://www.nature.com/articles/s41560-022-00978-y Abstract (text/html)
Access to the full text of the articles in this series is restricted.

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:nat:natene:v:7:y:2022:i:4:d:10.1038_s41560-022-00978-y

Ordering information: This journal article can be ordered from
https://www.nature.com/nenergy/

DOI: 10.1038/s41560-022-00978-y

Access Statistics for this article

Nature Energy is currently edited by Fouad Khan

More articles in Nature Energy from Nature
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().