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Functional two-dimensional high-entropy materials
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DOI：10.1038/s43246-023-00341-y.png)
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Abstract
En 中文
High-entropy materials have been realized in a wide number of alloys and ceramics, usually in bulk form. This Perspective discusses the emerging field of two-dimensional high-entropy materials, focusing on their formation, structure and applications. Multiple principal element or high-entropy materials have recently been studied in the two-dimensional (2D) materials phase space. These promising classes of materials combine the unique behavior of solid-solution and entropy-stabilized systems with high aspect ratios and atomically thin characteristics of 2D materials. The current experimental space of these materials includes 2D transition metal oxides, carbides/carbonitrides/nitrides (MXenes), dichalcogenides, and hydrotalcites. However, high-entropy 2D materials have the potential to expand into other types, such as 2D metal-organic frameworks, 2D transition metal carbo-chalcogenides, and 2D transition metal borides (MBenes). Here, we discuss the entropy stabilization from bulk to 2D systems, the effects of disordered multi-valent elements on lattice distortion and local electronic structures and elucidate how these local changes influence the catalytic and electrochemical behavior of these 2D high-entropy materials. We also provide a perspective on 2D high-entropy materials research and its challenges and discuss the importance of this emerging field of nanomaterials in designing tunable compositions with unique electronic structures for energy, catalytic, electronic, and structural applications.
Keywords:
MECHANICAL-PROPERTIES
PHASE-STABILITY
ALLOYS
MICROSTRUCTURE
TEMPERATURE
CARBIDE
OXIDES
CARBON
Journal
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4.3K