Cited by 138Electrocatalysts for Energy ConversionMetallic Glasses and Amorphous AlloysAsymmetric Hydrogenation and Catalysis

Low‐Iridium‐Content IrNiTa Metallic Glass Films as Intrinsically Active Catalysts for Hydrogen Evolution Reaction

Wang, Zi‐Jian, Li, Ming‐Xing, Yu, Ji‐Hao, Ge, Xing‐Bo, Liu, Yan‐Hui, Wang, Wei‐Hua·2020·Advanced Materials

Abstract

Although various catalytic materials have emerged for hydrogen evolution reaction (HER), it remains crucial to develop intrinsically effective catalysts with minimum uses of expensive and scarce precious metals. Metallic glasses (MGs) or amorphous alloys show up as attractive HER catalysts, but have so far limited to material forms and compositions that result in high precious-metal loadings. Here, an Ir 25 Ni 33 Ta 42 MG nanofilm exhibiting high intrinsic activity and superior stability at an ultralow Ir loading of 8.14 µg cm -2 for HER in 0.5 m H 2 SO 4 is reported. With an overpotential of 99 mV for a current density of 10 mA cm -2 , a small Tafel slope of 35 mV dec -1 , and high turnover frequencies of 1.76 and 19.3 H 2 s -1 at 50 and 100 mV overpotentials, the glassy film is among the most intrinsically active HER catalysts, outcompetes any reported MG, representative sulfides, and phosphides, and compares favorably with other precious-metal-containing catalysts. The outstanding HER performance of the Ir 25 Ni 33 Ta 42 MG film is attributed to the synergistic effect of the novel alloy system and amorphous structure, which may inspire the development of multicomponent alloys for heterogeneous catalysis.

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Crossref · 10.1002/adma.201906384

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Authors
Wang, Z., Li, M., Yu, J., Ge, X., Liu, Y., & Wang, W.
Affiliations
  • Chinese Academy of Sciences (CN)
  • Institute of Physics Chinese Academy of Sciences Beijing 100190 China
  • School of Chemistry and Chemical Engineering Southwest Petroleum University Chengdu 610500 China
Venue
Advanced Materials
Publisher
Wiley
Published
2019-12-06
Volume
32
Issue
4
Pages
e1906384-e1906384
ISSN
  • 0935-9648 (ISSN-L)
  • 1521-4095
OpenAlex
W2991748329
Cited by
138
References
59
Citations by year
2026: 7 · 2025: 21 · 2024: 27 · 2023: 20 · 2022: 28 · 2021: 23 · 2020: 12
FWCI
3.35
Type
journal article
Language
en
Open access
closed
Locations
  • Advanced Materials (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Basic Research Program of China (2018YFA0703601)
  • National Natural Science Foundation of China (11790291, 61888102)
Topics
  • Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › Electrocatalysts for Energy Conversion
  • Physical Sciences › Engineering › Mechanical Engineering › Metallic Glasses and Amorphous Alloys
  • Physical Sciences › Chemistry › Inorganic Chemistry › Asymmetric Hydrogenation and Catalysis
Keywords
hydrogen evolution reaction, amorphous alloys, iridium-free catalysts, low iridium loading, electrocatalysis, hydrogen evolution overpotential, turnover frequency, catalyst stability, multicomponent alloys, heterogeneous catalysis

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