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Highly efficient decomposition of ammonia using high-entropy alloy catalysts

Author

Listed:
  • Pengfei Xie

    (Johns Hopkins University)

  • Yonggang Yao

    (University of Maryland)

  • Zhennan Huang

    (University of Illinois)

  • Zhenyu Liu

    (University of Pittsburgh)

  • Junlei Zhang

    (Johns Hopkins University)

  • Tangyuan Li

    (University of Maryland)

  • Guofeng Wang

    (University of Pittsburgh)

  • Reza Shahbazian-Yassar

    (University of Illinois)

  • Liangbing Hu

    (University of Maryland)

  • Chao Wang

    (Johns Hopkins University)

Abstract

Ammonia represents a promising liquid fuel for hydrogen storage, but its large-scale application is limited by the need for precious metal ruthenium (Ru) as catalyst. Here we report on highly efficient ammonia decomposition using novel high-entropy alloy (HEA) catalysts made of earth abundant elements. Quinary CoMoFeNiCu nanoparticles are synthesized in a single solid-solution phase with robust control over the Co/Mo atomic ratio, including those ratios considered to be immiscible according to the Co-Mo bimetallic phase diagram. These HEA nanoparticles demonstrate substantially enhanced catalytic activity and stability for ammonia decomposition, with improvement factors achieving >20 versus Ru catalysts. Catalytic activity of HEA nanoparticles is robustly tunable by varying the Co/Mo ratio, allowing for the optimization of surface property to maximize the reactivity under different reaction conditions. Our work highlights the great potential of HEAs for catalyzing chemical transformation and energy conversion reactions.

Suggested Citation

  • Pengfei Xie & Yonggang Yao & Zhennan Huang & Zhenyu Liu & Junlei Zhang & Tangyuan Li & Guofeng Wang & Reza Shahbazian-Yassar & Liangbing Hu & Chao Wang, 2019. "Highly efficient decomposition of ammonia using high-entropy alloy catalysts," Nature Communications, Nature, vol. 10(1), pages 1-12, December.
    • Handle: RePEc:nat:natcom:v:10:y:2019:i:1:d:10.1038_s41467-019-11848-9
    DOI: 10.1038/s41467-019-11848-9
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    Cited by:

    1. Tawalbeh, Muhammad & Murtaza, Sana Z.M. & Al-Othman, Amani & Alami, Abdul Hai & Singh, Karnail & Olabi, Abdul Ghani, 2022. "Ammonia: A versatile candidate for the use in energy storage systems," Renewable Energy, Elsevier, vol. 194(C), pages 955-977.
    2. Cha, Junyoung & Park, Yongha & Brigljević, Boris & Lee, Boreum & Lim, Dongjun & Lee, Taeho & Jeong, Hyangsoo & Kim, Yongmin & Sohn, Hyuntae & Mikulčić, Hrvoje & Lee, Kyung Moon & Nam, Dong Hoon & Lee,, 2021. "An efficient process for sustainable and scalable hydrogen production from green ammonia," Renewable and Sustainable Energy Reviews, Elsevier, vol. 152(C).
    3. Yaguang Li & Xianhua Bai & Dachao Yuan & Chenyang Yu & Xingyuan San & Yunna Guo & Liqiang Zhang & Jinhua Ye, 2023. "Cu-based high-entropy two-dimensional oxide as stable and active photothermal catalyst," Nature Communications, Nature, vol. 14(1), pages 1-10, December.
    4. Lee, Boreum & Lim, Dongjun & Lee, Hyunjun & Lim, Hankwon, 2021. "Which water electrolysis technology is appropriate?: Critical insights of potential water electrolysis for green ammonia production," Renewable and Sustainable Energy Reviews, Elsevier, vol. 143(C).

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