Electron-Rich Ru Clusters Anchored on Pure Phase W2C Enables Highly Active and CO-Resistant Alkaline Hydrogen Oxidation

IF 24.4 1区材料科学 Q1 CHEMISTRY, PHYSICAL

Advanced Energy Materials Pub Date : 2025-02-10 DOI:10.1002/aenm.202406114

Yanan Gao, Bo Ouyang, Yuan Shen, Wei Wen, Junxiang Wang, Mingzhe Wang, Yiqiang Sun, Kun Xu

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Abstract

Developing highly active and CO-resistant Ru-based catalysts for the alkaline hydrogen oxidation reaction (HOR) can advance the large-scale application of alkaline hydrogen fuel cells but remains a huge challenge. Herein, a pure phase W₂C supported Ru cluster catalyst (Ru/W₂C) is successfully synthesized through a one-step carburization method. It is found that the charge transfer from W₂C to the strongly anchored Ru clusters forms the electron-rich Ru^δ− sites and electron-deficient W^δ+ sites, which significantly weakens the adsorption strength of ^*H and ^*CO, strengthens the binding of ^*OH and improves the water connectivity in the electric double layer. The Ru/W₂C catalyst shows superior mass activity (2163 mA mg_PGM⁻¹) in alkaline HOR, which is 12.52 and 20.62 times higher than that for Pt/C and Ru/C, respectively. Owing to the weak adsorption and fast removal rate of CO, the Ru/W₂C exhibits outstanding CO tolerance, with 88% of the initial activity being retained in the durability test, whereas the Ru/C and Pt/C suffer from severe deactivation. These findings may guide the design of advanced alkaline HOR catalysts based on the pure phase tungsten carbide.

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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.