Functional two-dimensional high-entropy materials
Functional two-dimensional high-entropy materials
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DOI：
10.1038/s43246-023-00341-y
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发表时间：
2023-02-21
影响因子：
7.8
通讯作者：
Anasori, Babak
中科院分区：
文献类型：
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作者：
Nemani, Srinivasa Kartik;Torkamanzadeh, Mohammad;Anasori, Babak
高熵材料已经在大量的合金和陶瓷中实现，通常以块状形式。该观点讨论了二维高熵材料的新兴领域，重点是它们的形成，结构和应用。多主元或高熵材料最近在二维（2D）材料相空间中进行了研究。这些有前途的材料类别联合收割机将固溶体和熵稳定系统的独特行为与2D材料的高纵横比和原子级薄的特性相结合。这些材料的当前实验空间包括2D过渡金属氧化物、碳化物/碳氮化物/氮化物（MXene）、二硫属化物和水滑石。然而，高熵2D材料具有扩展到其他类型的潜力，例如2D金属有机框架，2D过渡金属碳硫族化物和2D过渡金属硼化物（MBenes）。在这里，我们讨论了从体到二维系统的熵稳定，无序多价元素对晶格畸变和局部电子结构的影响，并阐明这些局部变化如何影响这些二维高熵材料的催化和电化学行为。我们还提供了对2D高熵材料研究及其挑战的观点，并讨论了这一新兴领域的纳米材料在设计具有独特电子结构的可调组合物用于能源，催化，电子和结构应用中的重要性。
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.