• Advanced Fiber Materials
  • Vol. 6, Issue 1, 00342 (2024)
Kyounghoon Jung1, Dwi Sakti Aldianto Pratama2, Andi Haryanto2, Jin Il Jang2, Hyung Min Kim2, Jae-Chan Kim3, Chan Woo Lee2、*, and Dong-Wan Kim1、**
Author Affiliations
  • 1School of Civil, Environmental, and Architectural Engineering, Korea University, Seoul 02841, Republic of Korea
  • 2Department of Chemistry, Kookmin University, Seoul 02707, Republic of Korea
  • 3Materials Science and Chemical Engineering Center, Institute for Advanced Engineering, Yongin-si 17180, Republic of Korea
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    DOI: 10.1007/s42765-023-00342-z Cite this Article
    Kyounghoon Jung, Dwi Sakti Aldianto Pratama, Andi Haryanto, Jin Il Jang, Hyung Min Kim, Jae-Chan Kim, Chan Woo Lee, Dong-Wan Kim. Iridium-Cluster-Implanted Ruthenium Phosphide Electrocatalyst for Hydrogen Evolution Reaction[J]. Advanced Fiber Materials, 2024, 6(1): 00342 Copy Citation Text show less

    Abstract

    Ruthenium phosphide is a promising catalyst for hydrogen evolution due to its cost-effectiveness compared to platinum. However it faces the challenge of having a high binding energy for hydrogen intermediates. In this study, we demonstrate that the incorporation of iridium in ruthenium phosphides lowers the binding energy of hydrogen intermediates, thereby controlling the overpotential and Tafel slope of hydrogen evolution. When the Ir content was doped at 3 at.%, the catalyst achieved an overpotential of 33 mV and a Tafel slope of 33 mV dec-1 under acidic conditions, which are similar to those of the benchmark Pt/C catalyst. In situ Raman spectroscopy and density functional theory (DFT) calculations suggest that the enhanced catalytic activity originates from the near-neutral Gibbs free energy of hydrogen adsorption on the hollow site of the iridium cluster implanted onto ruthenium phosphide.
    Kyounghoon Jung, Dwi Sakti Aldianto Pratama, Andi Haryanto, Jin Il Jang, Hyung Min Kim, Jae-Chan Kim, Chan Woo Lee, Dong-Wan Kim. Iridium-Cluster-Implanted Ruthenium Phosphide Electrocatalyst for Hydrogen Evolution Reaction[J]. Advanced Fiber Materials, 2024, 6(1): 00342
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