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

Author

Listed:
  • 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
    The Nancy and Stephen Grand Technion Energy Program (GTEP), Technion—Israel Institute of Technology)

  • Michael D. Guiver

    (Tianjin University)

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.

Suggested Citation

  • Xin Liu & Na Xie & Jiandang Xue & Mengyuan Li & Chenyang Zheng & Junfeng Zhang & Yanzhou Qin & Yan Yin & Dario R. Dekel & Michael D. Guiver, 2022. "Magnetic-field-oriented mixed-valence-stabilized ferrocenium anion-exchange membranes for fuel cells," Nature Energy, Nature, vol. 7(4), pages 329-339, April.
    • Handle: RePEc:nat:natene:v:7:y:2022:i:4:d:10.1038_s41560-022-00978-y
    DOI: 10.1038/s41560-022-00978-y
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    Cited by:

    1. Ramesh K. Singh & John C. Douglin & Lanjie Jiang & Karam Yassin & Simon Brandon & Dario R. Dekel, 2023. "CoO x -Fe 3 O 4 /N-rGO Oxygen Reduction Catalyst for Anion-Exchange Membrane Fuel Cells," Energies, MDPI, vol. 16(8), pages 1-18, April.
    2. Yousef Darvishi & Seyed Reza Hassan-Beygi & Jafar Massah & Marek Gancarz & Arkadiusz Bieszczad & Hamed Karami, 2023. "Determining the Influence of a Magnetic Field on the Vibration and Fuel Consumption of a Heavy Diesel Engine," Sustainability, MDPI, vol. 15(5), pages 1-12, February.

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