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High-performing commercial Fe–N–C cathode electrocatalyst for anion-exchange membrane fuel cells

Author

Listed:
  • Horie Adabi

    (University of South Carolina)

  • Abolfazl Shakouri

    (University of South Carolina)

  • Noor Ul Hassan

    (University of South Carolina)

  • John R. Varcoe

    (University of Surrey)

  • Barr Zulevi

    (Pajarito Powder)

  • Alexey Serov

    (Pajarito Powder)

  • John R. Regalbuto

    (University of South Carolina)

  • William E. Mustain

    (University of South Carolina)

Abstract

To reduce the cost of fuel cell stacks and systems, it is important to create commercial catalysts that are free of platinum group metals (PGMs). To do this, such catalysts must have very high activity, but also have the correct microstructure to facilitate the transport of reactants and products. Here, we show a high-performing commercial oxygen reduction catalyst that was specifically developed for operation in alkaline media and is demonstrated in the cathode of operating anion-exchange membrane fuel cells (AEMFCs). With H2/O2 reacting gases, AEMFCs made with Fe–N–C cathodes achieved a peak power density exceeding 2 W cm−2 (>1 W cm−2 with H2/air) and operated with very good voltage durability for more than 150 h. These AEMFCs also realized an iR-corrected current density at 0.9 V of 100 mA cm−2. Finally, in a second configuration, Fe–N–C cathodes paired with low-loading PtRu/C anodes (0.125 mg PtRu per cm2, 0.08 mg Pt per cm2) demonstrated a specific power of 10.4 W per mg PGM (16.25 W per mg Pt).

Suggested Citation

  • Horie Adabi & Abolfazl Shakouri & Noor Ul Hassan & John R. Varcoe & Barr Zulevi & Alexey Serov & John R. Regalbuto & William E. Mustain, 2021. "High-performing commercial Fe–N–C cathode electrocatalyst for anion-exchange membrane fuel cells," Nature Energy, Nature, vol. 6(8), pages 834-843, August.
    • Handle: RePEc:nat:natene:v:6:y:2021:i:8:d:10.1038_s41560-021-00878-7
    DOI: 10.1038/s41560-021-00878-7
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    Cited by:

    1. Xingdong Wang & Xuerui Liu & Jinjie Fang & Houpeng Wang & Xianwei Liu & Haiyong Wang & Chengjin Chen & Yongsheng Wang & Xuejiang Zhang & Wei Zhu & Zhongbin Zhuang, 2024. "Tuning the apparent hydrogen binding energy to achieve high-performance Ni-based hydrogen oxidation reaction catalyst," Nature Communications, Nature, vol. 15(1), pages 1-11, December.
    2. Shen, Yuanting & Yan, Xiaohui & An, Liang & Shen, Shuiyun & An, Lu & Zhang, Junliang, 2022. "Portable proton exchange membrane fuel cell using polyoxometalates as multi-functional hydrogen carrier," Applied Energy, Elsevier, vol. 313(C).

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