Synergistic effect of PANI nanofibers on MXene sheets for high performance electrodes in supercapacitor applications

Abstract

Development of advanced composite materials for supercapacitor electrodes is crucial for achieving high performance energy storage devices. This research presents the electrochemical properties of 2D MXene (Ti₃C₂T_x) sheets by integrating them with polyaniline (PANI) nanofiber using polymerization method. The electrochemical measurements were finding by utilizing of graphite sheet as a current collector. The results demonstrate that the Ti₃C₂T_x/PANI nanocomposite has a remarkable capacitance of 854 F/g at a current density of 1A/g with 1 M H₂SO₄ electrolyte. Moreover, it demonstrates at an immersive retention capacity of 88 % after 2000 cycles of charging and discharging, even at 5 A/g current density. Ti₃C₂T_x/PANI has 48.6 μS/cm ionic conductivity and a diffusion coefficient of 196.1 × 10⁻¹² cm²/s as calculated by EIS measurements. Therefore, Ti₃C₂T_x/PANI nanocomposite can be regarded a promising electrode material for supercapacitor applications.