Chemical scissor–mediated structural editing of layered transition metal carbides

IF 45.8 1区综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES

Science Pub Date : 2023-03-16 DOI:10.1126/science.add5901

Haoming Ding, Youbing Li, Mian Li, Ke Chen, Kun Liang, Guoxin Chen, Jun Lu, Justinas Palisaitis, Per O. Å. Persson, Per Eklund, Lars Hultman, Shiyu Du, Zhifang Chai, Yury Gogotsi, Qing Huang

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引用次数: 38

Abstract

Intercalated layered materials offer distinctive properties and serve as precursors for important two-dimensional (2D) materials. However, intercalation of non–van der Waals structures, which can expand the family of 2D materials, is difficult. We report a structural editing protocol for layered carbides (MAX phases) and their 2D derivatives (MXenes). Gap-opening and species-intercalating stages were respectively mediated by chemical scissors and intercalants, which created a large family of MAX phases with unconventional elements and structures, as well as MXenes with versatile terminals. The removal of terminals in MXenes with metal scissors and then the stitching of 2D carbide nanosheets with atom intercalation leads to the reconstruction of MAX phases and a family of metal-intercalated 2D carbides, both of which may drive advances in fields ranging from energy to printed electronics.

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化学剪刀介导的层状过渡金属碳化物结构编辑

夹层材料具有独特的性能，是重要的二维（2D）材料的前体。然而，非范德华结构的插层可以扩大二维材料系列，但却很难实现。我们报告了层状碳化物（MAX 相）及其二维衍生物（MXenes）的结构编辑方案。通过化学剪刀和插层剂分别介导的间隙打开和物种插层阶段，产生了一大批具有非常规元素和结构的 MAX 相，以及具有多功能终端的 MXenes。用金属剪刀去除 MXenes 中的端子，然后用原子插层缝合二维碳化物纳米片，从而重建了 MAX 相和金属插层二维碳化物系列，这两种方法都可能推动从能源到印刷电子等领域的进步。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Science 综合性期刊-综合性期刊

CiteScore

61.10

自引率

0.90%

发文量

审稿时长

2.1 months

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