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Two-dimensional Ti3C2 as anode material for Li-ion batteries

Dandan Sun,Mingshan Wang,Zhengyang Li,Guangxin Fan,Li-Zhen Fan,Aiguo Zhou

Two-dimensional (2D) Ti 3 C 2 was synthesized by the exfoliation of Ti 3 AlC 2 with HF solution and subsequently intercalation with dimethyl sulfoxide . As anode for lithium ion batteries , Ti 3 C 2 after intercalation had an obvious higher capacity than that before intercalation. The capacity can be 123.6   mAh   g −   1 at 1C rate with a coulombic efficiency of 47%. It is higher than that of 2D Ti 2 C and close to the theoretical capacity of Ti 3 C 2 with F termination. It was suggested that MXene with pure F groups may be a way to further improve its Li storage performance.