Rugged High-Entropy Alloy Nanowires with in Situ Formed Surface Spinel Oxide As Highly Stable Electrocatalyst in Zn–Air Batteries
Abstract
Noble metal elements are the key to many high-performance heterogeneous catalytic processes; nevertheless, how to reduce the usage of such scarce and prohibitive materials while maintaining or even enhancing the desired catalytic performance has always been a grand challenge. In this work, we introduce a general dealloying procedure to synthesize a series of predesigned rugged high-entropy alloy (HEA) nanowires, including Al–Ni–Co–Ru–X, where X = Mo, Cu, V, Fe as the trifunctional electrocatalysts for the hydrogen evolution reaction (HER), oxygen evolution reaction (OER), and oxygen reduction reaction (ORR). These mechanically and chemically stable HEAs can not only significantly reduce the noble-metal contents but also effectively enhance the flexibility in their electronic structures suitable for broad catalytic functionalities. Specifically, our etched Al–Ni–Co–Ru–Mo nanowires exhibit a similarly high electrocatalytic activity as commercial Pt/C for HER. Its OER activity is much higher than the commercial RuO 2 and among the highest ever-reported Ru-based OER catalysts. Its ORR catalytic activity is even higher than Pt/C, although Ru is not considered as a good ORR catalyst. Moreover, the oxidized surfaces of these HEAs are highly stable during continuous working conditions, which is crucial for overall water splitting and rechargeable Zn–air batteries.
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Graphene-based nanomaterials are competitive advanced carriers because of efficient electron transfer, high surface area, and excellent conductivity.
“Among the various carbon nanomaterials, graphene-based nanomaterials are competitive advanced carriers because of their efficient electron transfer, high surface area, and excellent conductivity [23-25].”
From Nitrogen-doped graphene aerogel-supported ruthenium nanocrystals for pH-universal hydrogen evolution reaction (2022) · cites this paper as [24]
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- Authors
- Jin, Z., Lyu, J., Zhao, Y.-L., Li, H., Lin, X., Xie, G., Liu, X., Kai, J.-J., & Qiu, H.-J.
- Affiliations
- Harbin Institute of Technology (CN)
- Tsinghua University (CN)
- Department of Mechanical Engineering, City University of Hong Kong, Hong Kong, China
- City University of Hong Kong (HK)
- Corresponding author
- Li, Huanglong
- Qiu, Hua-Jun
- Venue
- ACS Materials Letters
- Publisher
- American Chemical Society (ACS)
- Published
- 2020-11-23
- Volume
- 2
- Issue
- 12
- Pages
- 1698-1706
- ISSN
- 2639-4979 (ISSN-L)
- OpenAlex
- W3107382008
- Cited by
- 244
- References
- 61
- Citations by year
- 2026: 30 · 2025: 54 · 2024: 50 · 2023: 50 · 2022: 38 · 2021: 22
- FWCI
- 5.43
- Type
- journal article
- Language
- en
- Open access
- closed
- Licence
- Locations
- ACS Materials Letters (publishedVersion)
- Funders
- Harbin Institute of Technology
- National Natural Science Foundation of China (51702031, 51871077, 61704096)
- Shenzhen Fundamental Research Program (JCYJ20180306171644942, JCYJ20180507184623297, KQJSCX20180328165656256)
- Topics
- Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › Electrocatalysts for Energy Conversion
- Physical Sciences › Engineering › Mechanical Engineering › High Entropy Alloys Studies
- Physical Sciences › Materials Science › Materials Chemistry › Catalytic Processes in Materials Science
- Keywords
- high-entropy alloys, nanowires, dealloying, trifunctional electrocatalysts, hydrogen evolution reaction, oxygen evolution reaction, oxygen reduction reaction, noble metal-free catalysts, zinc-air batteries, water splitting, catalyst stability
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