Synthesis of Ti3AlC2 and electrochemical performance of Ti3C2Tx nanosheet electrode

Abstract

Fabrication of high purity Ti3AlC2 was investigated by one-step mechanical alloying technique. Ultra-thin Ti3C2Tx nanosheets were successfully prepared by etching Ti3AlC2 precursor with simple and safe methods. The flexible and free-standing Ti3C2Tx nanosheet electrode was prepared by vacuum-assistant filtering and achieved a high volumetric capacitance of 509.7 F/cm3 at the scan rate of 2 mV/s in 1 M KOH electrolyte solution. The capacitance retention is 95% after 10000 cycles. Hence, the synthesized Ti3AlC2 precursor by one-step mechanical alloying method benefits to prepare ultra-thin Ti3C2Tx nanosheets. The Ti3C2Tx nanosheet electrode shows an excellent electrochemical performance.