In the past decade, two-dimensional (2D) transition metal carbides, nitrides, and carbonitrides (MXenes) have attracted attention and interest from the scientific community due to their superior mechanical strength and flexibility, physical/chemical properties, and multiple exciting functionalities. Among these materials, the ingenious and effective combination of the mechanical and functional properties of MXenes provides a promising opportunity for designing flexible and wearable devices. This review summarizes the recent research progress in the structural stabilities, mechanical strength and deformation mechanism, strain-tunable energy storages, and catalytic and thermoelectric properties along with certain strain modifications and strain-controllable electronic/topological properties of MXenes from a combined theoretical and experimental perspective and illustrates their electronic origins. Taking the design principles as a focus, the theoretical predictions provide guidance, while the experimental work gives a thorough validation, thus setting the foundation for the current scientific achievements, challenges, and prospects in the field of MXenes.

中文翻译：

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具有多种功能的柔性二维MXene的合理设计。

在过去的十年中，二维（2D）过渡金属碳化物，氮化物和碳氮化物（MXenes）由于其卓越的机械强度和柔韧性，物理/化学性质以及多种令人兴奋的功能而引起了科学界的关注和关注。在这些材料中，MXenes的机械和功能特性的巧妙而有效的结合为设计柔性和可穿戴设备提供了广阔的机遇。这篇综述总结了结构稳定性，机械强度和变形机理，应变可调储能的最新研究进展，从理论和实验的角度来看，MXene的催化和热电性质以及某些应变修饰和应变可控的电子/拓扑性质，并说明了它们的电子起源。以设计原则为重点，理论预测提供了指导，而实验工作则进行了全面的验证，从而为MXene领域的当前科学成就，挑战和前景奠定了基础。