Growing Nanocrystalline Ru on Amorphous/Crystalline Heterostructure for Efficient and Durable Hydrogen Evolution Reaction DOI Open Access

Qikai Huang,

Xu Zhang, Tong Li

et al.

Catalysts, Journal Year: 2025, Volume and Issue: 15(5), P. 434 - 434

Published: April 29, 2025

The design of efficient hydrogen evolution reaction (HER) catalysts to minimize overpotentials plays a pivotal role in advancing water electrolysis and clean energy solutions. Ru-based catalysts, regarded as potential replacements for Pt-based face stability challenges during catalytic process. precise regulation metal–support interactions effectively prevents Ru nanoparticle degradation while optimizing interfacial electronic properties, enabling the simultaneous enhancement activity stability. Herein, we an amorphous/crystalline support employ situ replacement develop Ru-NiPx-Ni structure. crystalline Ni phase with ordered atomic arrangement ensures charge transport, amorphous unsaturated dangling bonds provides abundant anchoring sites nanoclusters. This synergistic structure significantly enhances HER performance, which attains 19 mV at 10 mA cm−2 70 100 1 m KOH, sustained operation exceeding 55 h cm−2. Electrochemical impedance spectroscopy analysis confirms that not only has high density active centers HER, but also reduces transfer resistance electrode–electrolyte interface, kinetics. study presents new directions designing high-efficiency catalysts.

Language: Английский

Growing Nanocrystalline Ru on Amorphous/Crystalline Heterostructure for Efficient and Durable Hydrogen Evolution Reaction DOI Open Access

Qikai Huang,

Xu Zhang, Tong Li

et al.

Catalysts, Journal Year: 2025, Volume and Issue: 15(5), P. 434 - 434

Published: April 29, 2025

The design of efficient hydrogen evolution reaction (HER) catalysts to minimize overpotentials plays a pivotal role in advancing water electrolysis and clean energy solutions. Ru-based catalysts, regarded as potential replacements for Pt-based face stability challenges during catalytic process. precise regulation metal–support interactions effectively prevents Ru nanoparticle degradation while optimizing interfacial electronic properties, enabling the simultaneous enhancement activity stability. Herein, we an amorphous/crystalline support employ situ replacement develop Ru-NiPx-Ni structure. crystalline Ni phase with ordered atomic arrangement ensures charge transport, amorphous unsaturated dangling bonds provides abundant anchoring sites nanoclusters. This synergistic structure significantly enhances HER performance, which attains 19 mV at 10 mA cm−2 70 100 1 m KOH, sustained operation exceeding 55 h cm−2. Electrochemical impedance spectroscopy analysis confirms that not only has high density active centers HER, but also reduces transfer resistance electrode–electrolyte interface, kinetics. study presents new directions designing high-efficiency catalysts.

Language: Английский

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