Liquid metal for high-entropy alloy nanoparticles synthesis

Guanghui Cao, Jingjing Liang, Zenglong Guo, Kena Yang, Gang Wang, Huiliu Wang, Xuhao Wan, Zeyuan Li, Yijia Bai, Yile Zhang, Junlin Liu, Yanpeng Feng, Zhenying Zheng, Cai Lu, Guangzhi He, Zeyou Xiong, Ze Liu, Shengli Chen, Yuzheng Guo (), Mengqi Zeng (), Junhao Lin () and Lei Fu ()
Additional contact information
Guanghui Cao: Wuhan University
Jingjing Liang: Wuhan University
Zenglong Guo: Southern University of Science and Technology
Kena Yang: Wuhan University
Gang Wang: Southern University of Science and Technology
Huiliu Wang: Wuhan University
Xuhao Wan: Wuhan University
Zeyuan Li: Wuhan University
Yijia Bai: Inner Mongolia University of Technology
Yile Zhang: Wuhan University
Junlin Liu: Wuhan University
Yanpeng Feng: Songshan Lake Materials Laboratory
Zhenying Zheng: Wuhan University
Cai Lu: Wuhan University
Guangzhi He: Wuhan University
Zeyou Xiong: Wuhan University
Ze Liu: Wuhan University
Shengli Chen: Wuhan University
Yuzheng Guo: Wuhan University
Mengqi Zeng: Wuhan University
Junhao Lin: Southern University of Science and Technology
Lei Fu: Wuhan University

Nature, 2023, vol. 619, issue 7968, 73-77

Abstract: Abstract High-entropy alloy nanoparticles (HEA-NPs) show great potential as functional materials1–3. However, thus far, the realized high-entropy alloys have been restricted to palettes of similar elements, which greatly hinders the material design, property optimization and mechanistic exploration for different applications4,5. Herein, we discovered that liquid metal endowing negative mixing enthalpy with other elements could provide a stable thermodynamic condition and act as a desirable dynamic mixing reservoir, thus realizing the synthesis of HEA-NPs with a diverse range of metal elements in mild reaction conditions. The involved elements have a wide range of atomic radii (1.24–1.97 Å) and melting points (303–3,683 K). We also realized the precisely fabricated structures of nanoparticles via mixing enthalpy tuning. Moreover, the real-time conversion process (that is, from liquid metal to crystalline HEA-NPs) is captured in situ, which confirmed a dynamic fission–fusion behaviour during the alloying process.

Date: 2023
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DOI: 10.1038/s41586-023-06082-9

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