Ti3C2Tx-Based Electrodes with Enhanced Pseudocapacitance for High-Performance Lithium-ion Batteries

Ti3C2Tx, a new type of two-dimensional material, is a prospective anode material in lithium-ion batteries (LIBs) for its low lithium-ion diffusion barrier, high conductivity and many other excellent properties. In this paper, multilayer Ti3C2Tx and delaminated Ti3C2Tx samples are prepared by etching Ti3AlC2 powder with HF and HCl + LiF, respectively. We explore the application of the two samples in LIBs, and analyze their electrochemical behavior and kinetic mechanism. At the current densities of 0.1 A g(-1), the delaminated Ti3C2Tx electrode delivered higher capacities of 255 mAh g(-1) than multilayer Ti3C2Tx electrode (100 mAh g(-1)). Even after 1000 cycles, the specific capacity of the delaminated Ti3C2Tx is still up to 205 mAh g(-1) at 1 A g(-1) This work proves the great potential of the delaminated Ti3C2Tx for lithium-ion storage.