Electrochemical performance of Ti3C2Tx MXenes obtained via ultrasound assisted LiF-HCl method

In the present work, ultrasound was introduced throughout the synthesis of Ti 3 C 2 Tx MXene, the synthesis efficiency and energy storage performance of the MXenes were significantly improved under the aid of ultrasound. It was verified that intercalation of Li + between the adjacent layers of Ti 3 C 2 Tx MXene was greatly promoted by the ultrasound. Under the impact of ultrasound, the 8 h sonicated etched showed a specific capacitance of 270.5 F/g, which is a 16-fold enhancement compared with the sample without the aid of ultrasound. Monolayered samples with and without sonication treatment were synthesized, and the sample prepared in presence of ultrasound showed a specific capacitance of 420.66 F/g. The specific capacitance retention of the 8 h ultrasonically etched multiple layered samples after 10,000 cycles at 5 A/g was 95.52%, 4.27% higher than the corresponding value of the monolayered sample. • The ultrasonic was introduced throughout the synthesis process of Ti3C2Tx MXene • The timescale of etching was shortened to 8 hours in presence of ultrasound • The ultrasonically etched sample exhibits superior electrochemical performance • The contribution of capacitive behavior for energy storage was investigated