Tailored Interatomic Interactions in High-Entropy Alloys for Enhanced Electrocatalytic Hydrogen Evolution Reaction in Alkaline Water
Interatomic interactions play a crucial role in electrocatalysts for the efficient hydrogen evolution reaction (HER). However, understanding the effect of interatomic interactions in high-entropy alloys (HEAs) on HER is challenging due to their complex compositions. In this study, we meticulously designed a series of quinary and senary HEAs (PtPd- and PtPdRu-HEA) with tailored interatomic interactions. Notably, a specific hydrogen spillover pathway facilitated by atomic interactions in PtPd-HEA was unveiled. By means of the hydrogen spillover effect (HSE), a decent alkaline HER performance was achieved with PtPd-HEA, exhibiting an overpotential of only 12 mV at 10 mA cm–2, and a stability exceeding 200 h in 1 M KOH. Moreover, using PtPd-HEA as a cathode and NiFe-LDH as an anode, the as-fabricated anion exchange membrane water electrolyzer exhibited a high operational stability exceeding 100 h at 1 A cm–2. And, the detrimental role of Ru to weaken the desorption of *H on PtPdRu-HEA via decreasing the lattice distortion rate of the (111) plane was identified. Consequently, PtPdRu-HEA exhibited HER activity lower than that of PtPd-HEA.
Authors
- Shaohua Shen (ORCID: https://orcid.org/0000-0001-8536-7386)
- Xiaohui Zhao (ORCID: https://orcid.org/0009-0000-4388-2400)
- Hao Deng (ORCID: https://orcid.org/0009-0009-7378-9819)
- Lin Fu
- Yan Ding (ORCID: https://orcid.org/0000-0002-3330-3425)
- Kaini Zhang
- Bo Huang (ORCID: https://orcid.org/0000-0002-7429-8765)
- Weibo Hua (ORCID: https://orcid.org/0000-0001-5372-4422)
- Chunying Chen (ORCID: https://orcid.org/0000-0002-6027-0315)
- Ying‐Rui Lu (ORCID: https://orcid.org/0000-0002-6002-5627)
- Yucheng Huang (ORCID: https://orcid.org/0000-0002-7818-8811)
- Liping Ren (ORCID: https://orcid.org/0000-0003-0636-7500)
- Jie Chen (ORCID: https://orcid.org/0000-0002-2007-0896)
- Jinjia Wei
Institutions
- National Synchrotron Radiation Research Center (TW)
- China Power Engineering Consulting Group (China) (CN)
- Xi'an Jiaotong University (CN)
Publication Details
- Journal
- ACS Catalysis
- Published
- 2025-06-11
- DOI
- https://doi.org/10.1021/acscatal.5c02126
- Citations
- 25
- Primary Topic
- Electrocatalysts for Energy Conversion
- Type
- article
- Field-Weighted Citation Impact
- 9.09
Funders
- National Natural Science Foundation of China
- National Synchrotron Radiation Research Center
- National Science and Technology Council
- National Outstanding Youth Science Fund Project of National Natural Science Foundation of China
- National Key Research and Development Program of China
- Key Research and Development Projects of Shaanxi Province