Laser solid-phase synthesis of graphene shell-encapsulated high-entropy alloy nanoparticles

Yuxiang Liu; Jianghuai Yuan; Jiantao Zhou; Kewen Pan; Ran Zhang; Rongxia Zhao; Lin Li; Yihe Huang; Zhu Liu

doi:10.1038/s41377-024-01614-y

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Laser solid-phase synthesis of graphene shell-encapsulated high-entropy alloy nanoparticles

Original Articles

- Laser solid-phase synthesis of graphene shell-encapsulated high-entropy alloy nanoparticles
- Light: Science & Applications Vol. 13, Issue 11, Pages: 2781-2793(2024)
- Affiliations：
  
  Research Centre for Laser Extreme Manufacturing, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China
- Author bio：
  
  Yihe Huang (yihehuang@nimte.ac.cn)
  Zhu Liu (liuzhu@nimte.ac.cn)
- Funds：
- DOI：10.1038/s41377-024-01614-y
  CLC：
- Published：30 November 2024，
  
  Published Online：26 September 2024，
  
  Received：24 May 2024，
  
  Revised：16 August 2024，
  
  Accepted：28 August 2024
- Accepted：
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Liu, Y. X. et al. Laser solid-phase synthesis of graphene shell-encapsulated high-entropy alloy nanoparticles. Light: Science & Applications, 13, 2781-2793 (2024).
DOI：

Liu, Y. X. et al. Laser solid-phase synthesis of graphene shell-encapsulated high-entropy alloy nanoparticles. Light: Science & Applications, 13, 2781-2793 (2024). DOI： 10.1038/s41377-024-01614-y.

摘要

Abstract

Rapid synthesis of high-entropy alloy nanoparticles (HEA NPs) offers new opportunities to develop functional materials in widespread applications. Although some methods have successfully produced HEA NPs

these methods generally require rigorous conditions such as high pressure

high temperature

restricted atmosphere

and limited substrates

which impede practical viability. In this work

we report laser solid-phase synthesis of CrMnFeCoNi nanoparticles by laser irradiation of mixed metal precursors on a laser-induced graphene (LIG) support with a 3D porous structure. The CrMnFeCoNi nanoparticles are embraced by several graphene layers

forming graphene shell-encapsulated HEA nanoparticles. The mechanisms of the laser solid-phase synthesis of HEA NPs on LIG supports are investigated through theoretical simulation and experimental observations

in consideration of mixed metal precursor adsorption

thermal decomposition

reduction through electrons from laser-induced thermionic emission

and liquid beads splitting. The production rate reaches up to 30 g/h under the current laser setup. The laser-synthesized graphene shell-encapsulated CrMnFeCoNi NPs loaded on LIG-coated carbon paper are used dire

ctly as 3D binder-free integrated electrodes and exhibited excellent electrocatalytic activity towards oxygen evolution reaction with an overpotential of 293 mV at the current density of 10 mA/cm

and exceptional stability over 428 h in alkaline media

outperforming the commercial RuO

catalyst and the relevant catalysts reported by other methods. This work also demonstrates the versatility of this technique through the successful synthesis of CrMnFeCoNi oxide

sulfide

and phosphide nanoparticles.

关键词

Keywords

references

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