Lattice-Matched Ru/W2C Heterointerfaces with Reversible Hydrogen Spillover for Efficient Alkaline Hydrogen Evolution

IF 24.4 1区材料科学 Q1 CHEMISTRY, PHYSICAL

Advanced Energy Materials Pub Date : 2024-12-24 DOI:10.1002/aenm.202405546

Jian-Zhong Jiang, Shangguo Liu, Zijian Li, Min Gyu Kim, Haeseong Jang, Xien Liu, Liqiang Hou

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Abstract

The effect of lattice-matched heterointerfaces on the hydrogen reverse spillover process for accelerating alkaline hydrogen evolution reaction (HER) kinetics has not yet been reported. Herein, a lattice-matched Ru/W₂C heterostructure is successfully constructed for effective hydrogen production. Experimental and theoretical results reveal that the Ru nanocluster can effectively stabilize W₂C and thus promote the formation of phase-pure W₂C in the Ru/W₂C heterostructure. In addition, it is revealed that H₂O dissociation proceeded on W₂C, and the formed H intermediates are subsequently migrated to adjacent interfacial Ru sites for H─H coupling and H₂ release. This is enabled via a reversible hydrogen spillover mechanism promoted by the lattice-matched heterointerfaces that can weaken interfacial proton adsorption. As expected, the Ru/W₂C heterogeneous electrocatalyst exhibited a superior HER performance with a low overpotential of 17 mV at 10 mA cm⁻², a high mass current density (6.44 A mg_Ru⁻¹), and a low turnover frequency (TOF) value (2.8 s⁻¹) at the overpotential of 100 mV, far overwhelming the benchmark Ru/C and Pt/C. The study may offer a new perspective for the design of highly active electrocatalysts for alkaline HER.

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来源期刊

Advanced Energy Materials CHEMISTRY, PHYSICAL-ENERGY & FUELS

CiteScore

41.90

自引率

4.00%

发文量

889

审稿时长

1.4 months

期刊介绍： Established in 2011, Advanced Energy Materials is an international, interdisciplinary, English-language journal that focuses on materials used in energy harvesting, conversion, and storage. It is regarded as a top-quality journal alongside Advanced Materials, Advanced Functional Materials, and Small. With a 2022 Impact Factor of 27.8, Advanced Energy Materials is considered a prime source for the best energy-related research. The journal covers a wide range of topics in energy-related research, including organic and inorganic photovoltaics, batteries and supercapacitors, fuel cells, hydrogen generation and storage, thermoelectrics, water splitting and photocatalysis, solar fuels and thermosolar power, magnetocalorics, and piezoelectronics. The readership of Advanced Energy Materials includes materials scientists, chemists, physicists, and engineers in both academia and industry. The journal is indexed in various databases and collections, such as Advanced Technologies & Aerospace Database, FIZ Karlsruhe, INSPEC (IET), Science Citation Index Expanded, Technology Collection, and Web of Science, among others.