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Magnetic field alignment of stable proton-conducting channels in an electrolyte membrane

Author

Listed:
  • Xin Liu

    (Tianjin University)

  • Yi Li

    (Tianjin University)

  • Jiandang Xue

    (Tianjin University)

  • Weikang Zhu

    (Tianjin University)

  • Junfeng Zhang

    (Tianjin University)

  • Yan Yin

    (Tianjin University
    Tianjin Polytechnic University)

  • Yanzhou Qin

    (Tianjin University)

  • Kui Jiao

    (Tianjin University)

  • Qing Du

    (Tianjin University)

  • Bowen Cheng

    (Tianjin Polytechnic University)

  • Xupin Zhuang

    (Tianjin Polytechnic University)

  • Jianxin Li

    (Tianjin Polytechnic University)

  • Michael D. Guiver

    (Tianjin University
    Collaborative Innovation Center of Chemical Science and Engineering (Tianjin))

Abstract

Proton exchange membranes with short-pathway through-plane orientated proton conductivity are highly desirable for use in proton exchange membrane fuel cells. Magnetic field is utilized to create oriented structure in proton exchange membranes. Previously, this has only been carried out by proton nonconductive metal oxide-based fillers. Here, under a strong magnetic field, a proton-conducting paramagnetic complex based on ferrocyanide-coordinated polymer and phosphotungstic acid is used to prepare composite membranes with highly conductive through-plane-aligned proton channels. Gratifyingly, this strategy simultaneously overcomes the high water-solubility of phosphotungstic acid in composite membranes, thereby preventing its leaching and the subsequent loss of membrane conductivity. The ferrocyanide groups in the coordinated polymer, via redox cycle, can continuously consume free radicals, thus helping to improve the long-term in situ membrane durability. The composite membranes exhibit outstanding proton conductivity, fuel cell performance and durability, compared with other types of hydrocarbon membranes and industry standard Nafion® 212.

Suggested Citation

  • Xin Liu & Yi Li & Jiandang Xue & Weikang Zhu & Junfeng Zhang & Yan Yin & Yanzhou Qin & Kui Jiao & Qing Du & Bowen Cheng & Xupin Zhuang & Jianxin Li & Michael D. Guiver, 2019. "Magnetic field alignment of stable proton-conducting channels in an electrolyte membrane," Nature Communications, Nature, vol. 10(1), pages 1-13, December.
    • Handle: RePEc:nat:natcom:v:10:y:2019:i:1:d:10.1038_s41467-019-08622-2
    DOI: 10.1038/s41467-019-08622-2
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    Cited by:

    1. Pourzare, K. & Mansourpanah, Y. & Farhadi, S. & Sadrabadi, M.M. Hasani & Ulbricht, M., 2022. "Improvement of proton conductivity of magnetically aligned phosphotungstic acid-decorated cobalt oxide embedded Nafion membrane," Energy, Elsevier, vol. 239(PA).
    2. Ke, Yuzhi & Yuan, Wei & Zhou, Feikun & Guo, Wenwen & Li, Jinguang & Zhuang, Ziyi & Su, Xiaoqing & Lu, Biaowu & Zhao, Yonghao & Tang, Yong & Chen, Yu & Song, Jianli, 2021. "A critical review on surface-pattern engineering of nafion membrane for fuel cell applications," Renewable and Sustainable Energy Reviews, Elsevier, vol. 145(C).
    3. Liu, Fengxiang & Wang, Shuang & Chen, Hao & Li, Jinsheng & Wang, Xu & Mao, Tiejun & Wang, Zhe, 2021. "The impact of poly (ionic liquid) on the phosphoric acid stability of polybenzimidazole-base HT-PEMs," Renewable Energy, Elsevier, vol. 163(C), pages 1692-1700.

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