查看文章

2D transition metal carbides and/or nitrides (MXenes) have attracted enormous attention because of their potential applications in energy storage, catalysis, and others. The control of surface terminations is generally believed to offer the potential preparation approaches to novel MXenes, while an external strain may provide solution to property modification. However, an atomistic understanding on the stabilization of surface complexity and the influence of strain on electrochemical properties of MXenes are scarce yet much demanded. Herein, taking Ti₂CT_n as a representative MXene, the thermodynamically favorable configurations are explored with a mixture of functional groups under various electrochemical environments. It predicts that five thermodynamically preferable Ti₂CT_n terminated by O and F cofunctionalized groups are discovered, all of which show excellent mechanical flexibility and strength that …