Back to Search Start Over

Synthesis and Unique Behaviors of High-Purity HEA Nanoparticles Using Femtosecond Laser Ablation.

Authors :
Fieser, David
Lan, Yucheng
Gulino, Antonino
Compagnini, Giuseppe
Aaron, Doug
Mench, Matthew
Bridges, Denzel
Shortt, Hugh
Liaw, Peter
Hu, Anming
Source :
Nanomaterials (2079-4991). Mar2024, Vol. 14 Issue 6, p554. 16p.
Publication Year :
2024

Abstract

High-entropy alloys (HEAs) are a class of metal alloys consisting of four or more molar equal or near-equal elements. HEA nanomaterials have garnered significant interest due to their wide range of applications, such as electrocatalysis, welding, and brazing. Their unique multi-principle high-entropy effect allows for the tailoring of the alloy composition to facilitate specific electrochemical reactions. This study focuses on the synthesis of high-purity HEA nanoparticles using the method of femtosecond laser ablation synthesis in liquid. The use of ultrashort energy pulses in femtosecond lasers enables uniform ablation of materials at significantly lower power levels compared to longer pulse or continuous pulse lasers. We investigate how various femtosecond laser parameters affect the morphology, phase, and other characteristics of the synthesized nanoparticles. An innovative aspect of our solution is its ability to rapidly generate multi-component nanoparticles with a high fidelity as the input multi-component target material at a significant yielding rate. Our research thus focuses on a novel synthesis of high-entropy alloying CuCoMn1.75NiFe0.25 nanoparticles. We explore the characterization and unique properties of the nanoparticles and consider their electrocatalytic applications, including high power density aluminum air batteries, as well as their efficacy in the oxygen reduction reaction (ORR). Additionally, we report a unique nanowire fabrication phenomenon achieved through nanojoining. The findings from this study shed light on the potential of femtosecond laser ablation synthesis in liquid (FLASiL) as a promising technique for producing high-purity HEA nanoparticles. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
20794991
Volume :
14
Issue :
6
Database :
Academic Search Index
Journal :
Nanomaterials (2079-4991)
Publication Type :
Academic Journal
Accession number :
176366355
Full Text :
https://doi.org/10.3390/nano14060554