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Highly efficient oxygen evolution reaction via facile bubble transport realized by three-dimensionally stack-printed catalysts

Author

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  • Ye Ji Kim

    (Korea Advanced Institute of Science and Technology (KAIST))

  • Ahyoun Lim

    (Center for Hydrogen & Fuel Cell Research, Korea Institute of Science and Technology (KIST))

  • Jong Min Kim

    (Materials Architecturing Research Center, Korea Institute of Science and Technology (KIST))

  • Donghoon Lim

    (Yonsei University)

  • Keun Hwa Chae

    (Advanced Analysis Center, Korea Institute of Science and Technology (KIST))

  • Eugene N. Cho

    (Korea Advanced Institute of Science and Technology (KAIST))

  • Hyeuk Jin Han

    (Korea Advanced Institute of Science and Technology (KAIST))

  • Ki Ung Jeon

    (Korea Advanced Institute of Science and Technology (KAIST))

  • Moohyun Kim

    (Korea Advanced Institute of Science and Technology (KAIST))

  • Gun Ho Lee

    (Korea Advanced Institute of Science and Technology (KAIST))

  • Gyu Rac Lee

    (Korea Advanced Institute of Science and Technology (KAIST))

  • Hyun S. Ahn

    (Yonsei University)

  • Hyun S. Park

    (Center for Hydrogen & Fuel Cell Research, Korea Institute of Science and Technology (KIST))

  • Hyoungsoo Kim

    (Korea Advanced Institute of Science and Technology (KAIST))

  • Jin Young Kim

    (Center for Hydrogen & Fuel Cell Research, Korea Institute of Science and Technology (KIST))

  • Yeon Sik Jung

    (Korea Advanced Institute of Science and Technology (KAIST))

Abstract

Despite highly promising characteristics of three-dimensionally (3D) nanostructured catalysts for the oxygen evolution reaction (OER) in polymer electrolyte membrane water electrolyzers (PEMWEs), universal design rules for maximizing their performance have not been explored. Here we show that woodpile (WP)-structured Ir, consisting of 3D-printed, highly-ordered Ir nanowire building blocks, improve OER mass activity markedly. The WP structure secures the electrochemically active surface area (ECSA) through enhanced utilization efficiency of the extended surface area of 3D WP catalysts. Moreover, systematic control of the 3D geometry combined with theoretical calculations and various electrochemical analyses reveals that facile transport of evolved O2 gas bubbles is an important contributor to the improved ECSA-specific activity. The 3D nanostructuring-based improvement of ECSA and ECSA-specific activity enables our well-controlled geometry to afford a 30-fold higher mass activity of the OER catalyst when used in a single-cell PEMWE than conventional nanoparticle-based catalysts.

Suggested Citation

  • Ye Ji Kim & Ahyoun Lim & Jong Min Kim & Donghoon Lim & Keun Hwa Chae & Eugene N. Cho & Hyeuk Jin Han & Ki Ung Jeon & Moohyun Kim & Gun Ho Lee & Gyu Rac Lee & Hyun S. Ahn & Hyun S. Park & Hyoungsoo Kim, 2020. "Highly efficient oxygen evolution reaction via facile bubble transport realized by three-dimensionally stack-printed catalysts," Nature Communications, Nature, vol. 11(1), pages 1-11, December.
    • Handle: RePEc:nat:natcom:v:11:y:2020:i:1:d:10.1038_s41467-020-18686-0
    DOI: 10.1038/s41467-020-18686-0
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    Cited by:

    1. Shujiao Yang & Kaihang Yue & Xiaohan Liu & Sisi Li & Haoquan Zheng & Ya Yan & Rui Cao & Wei Zhang, 2024. "Electrocatalytic water oxidation with manganese phosphates," Nature Communications, Nature, vol. 15(1), pages 1-13, December.
    2. Seung-hoon Kim & Yoonmook Kang & Hyung Chul Ham, 2021. "First-Principles Study of Pt-Based Bifunctional Oxygen Evolution & Reduction Electrocatalyst: Interplay of Strain and Ligand Effects," Energies, MDPI, vol. 14(22), pages 1-10, November.
    3. Zhou, Yuan & Li, Zeyi & He, Xuefeng & Zhu, Xun, 2025. "Gas bubbles in direct liquid fuel cells: Fundamentals, impacts, and mitigation strategies," Renewable and Sustainable Energy Reviews, Elsevier, vol. 208(C).
    4. Gyu Rac Lee & Jun Kim & Doosun Hong & Ye Ji Kim & Hanhwi Jang & Hyeuk Jin Han & Chang-Kyu Hwang & Donghun Kim & Jin Young Kim & Yeon Sik Jung, 2023. "Efficient and sustainable water electrolysis achieved by excess electron reservoir enabling charge replenishment to catalysts," Nature Communications, Nature, vol. 14(1), pages 1-12, December.

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