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In the past ten years, two-dimensional (2D) transition metal carbides, nitrides and carbonitrides (MXenes) have been caused by their excellent mechanical strength and flexibility, physical/chemical properties, and a variety of exciting functions Has attracted widespread attention from the scientific community. Among these materials, the ingenious and effective combination of the mechanical and functional properties of MXenes provides broad opportunities for the design of flexible and wearable devices. This review summarizes the structural stability, mechanical strength and deformation mechanism of MXenes, strain-tunable energy storage, catalytic and thermoelectric properties, and certain strain modifications and strain-controllable electronic/topological properties of MXenes from a theoretical and experimental perspective. Research progress and explain their electronic origin. Focusing on design principles, theoretical predictions as guidance, and experimental work as sufficient verification, this lays the foundation for the current scientific achievements, challenges and prospects in the field of MXene. Related papers were published on the top international review journal Chemical Reviews (IF=52.758) with the title "Rational Design of Flexible Two-Dimensional MXenes with Multiple Functionalities".
Figure 1. Various functional characteristics of MXenes and its strain modification based on excellent stability and excellent mechanical properties.
Figure 2. Time sequence of the development of flexible materials based on MXene.
Figure 3. A flexible MXene design strategy with multiple functions by combining high-throughput calculations, data mining and experimental characterization.
3. Summary and opinions
Although the stability, mechanical properties and various functional research fields of MXene have achieved great success, there are still several key areas that need to be resolved with a bright future. The author discusses in detail: (1) experimental design; (2) modular and high-throughput theoretical design; (3) flexible MXene design rules with specific functions.
Literature link: https://doi.org/10.1021/acs.chemrev.9b00348
Information source: scientific research
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