The synthesis and supercapacitor application of flexible free-standing Ti 3 C 2 T x , Mo 2 TiC 2 T x , and V 4 C 3 T x MXene films

intercalation/deintercalation, showing pseudocapacitance characteristics, along with the large interlayer spacing play a vital role in energy storage for MXenes, and an asymmetric configuration is an effective means to improve the energy density of aqueous supercapacitors. The comparative analysis aims to enhance the understanding of MXene materials' potential in advanced energy storage systems.