Synthesis of high-entropy materials

Yifan Sun, Sheng Dai

Research output: Contribution to journalReview articlepeer-review

Abstract

High-entropy materials (HEMs) exhibit compelling behaviours that are distinct from those in conventional solid solutions. Such disordered multicomponent systems bring unprecedented compositional and structural complexities that hinder a thorough understanding of entropy stabilization and its impact on phase selection and property optimization. The controlled fabrication of HEMs, ideally reaching the same level of detail as traditional alloy design, is desirable. The past decade has witnessed the development of advanced synthesis methodologies and techniques to introduce various degrees of control to this class of inherently disordered materials. Here we discuss the emerging rationales for synthesizing bulk and nanostructured HEMs with tunable microstructures, extended compositions and tailored atomic configurations. Case studies of formation pathways and stabilization mechanisms of different types of HEM reveal insightful synthesis guidelines. This progress enables predictable and rational manipulation of atomic order in the chemically disordered lattice, laying the foundations for exceptional functionalities. (Figure presented.)

Original languageEnglish
Article number8485
Pages (from-to)1457-1470
Number of pages14
JournalNature Synthesis
Volume3
Issue number12
DOIs
StatePublished - Dec 2024

Funding

Y.S. acknowledges support from the National Natural Science Foundation of China (22205135), Shanghai Sailing Program under grant no. 22YF1419600, Shanghai Pilot Program for Basic Research\u2014Shanghai Jiao Tong University (21TQ1400219), Fundamental Research Funds for the Central Universities (23X010301599) and start-up funds from Shanghai Jiao Tong University. S.D. acknowledges support from the US Department of Energy, Office of Science, Office of Basic Energy Sciences, Chemical Sciences, Geosciences, and Biosciences Division, Catalysis Science Program.

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