Relatively Low Crystalline Heterojunction Ru‐RuP <sub>2</sub> /WC for Hydrogen Evolution Reaction in Proton Exchange Membrane Water Electrolyzer
Abstract Substantial challenges remain in fabricating inexpensive yet highly efficient and durable electrocatalysts for HER applications. In this study, a relatively low‐crystallinity Ru‐RuP 2 heterostructure supported on tungsten carbide (LC‐Ru‐RuP 2 /WC) was fabricated through a precisely controlled gas‐phase phosphidation strategy. The optimized LC‐Ru‐RuP 2 /WC catalyst demonstrates exceptional performance in acidic media, achieving a low overpotential of 48.08 mV at 10 mA cm −2 while maintaining 95% activity retention over 30 h. Density functional theory (DFT) calculation results reveal that LC‐Ru‐RuP 2 /WC enhances HER via interfacial electron redistribution optimizes the d‐band center position, weakening hydrogen adsorption strength (rf H* = 0.042 eV) and effectively lowering the water dissociation energy barrier.
Authors
- Zihao Chen (ORCID: https://orcid.org/0000-0001-5315-9005)
- Jie Liu (ORCID: https://orcid.org/0000-0002-3105-4840)
- Jing Zhao (ORCID: https://orcid.org/0000-0002-1423-0291)
- Sun Liangliang (ORCID: https://orcid.org/0000-0002-0560-292X)
- Yan Jipeng
- Xue Peiyao
- Xue Lirong
Institutions
- Jingdezhen Ceramic Institute (CN)
- University of Agriculture in Krakow (PL)
- Yili Normal University (CN)
- Zero to Three (US)
- AGH University of Krakow (PL)
Publication Details
- Journal
- ChemCatChem
- Published
- 2025-10-23
- DOI
- https://doi.org/10.1002/cctc.202501072
- Primary Topic
- Electrocatalysts for Energy Conversion
- Type
- article
- Field-Weighted Citation Impact
- 0.00