<p>Two-dimensional (2D) MXenes have gained significant attention for their potential in electrochemical energy storage due to their outstanding electrical conductivity and surface functional groups. In this study, I developed a simple and effective in situ polymerization method to synthesize MXene/polypyrrole (MXene/PPy) composite film electrodes. The 2D Ti₃C₂T_<i>x</i> MXene nanosheets, rich in surface terminations like − F, − OH, and − O, played a crucial role in initiating and supporting the polymerization of pyrrole monomers. As a result, polypyrrole chains were formed both on the surface and within the interlayer spaces of the MXene sheets, creating a three-dimensional, interconnected structure that enhanced electrochemical performance. The structural and chemical properties of the composite were characterized using X-ray diffraction (XRD), Raman spectroscopy, Fourier transform infrared spectroscopy (FTIR), and scanning electron microscopy (SEM). Electrochemical performance was evaluated through cyclic voltammetry (CV), galvanostatic charge–discharge (GCD), and electrochemical impedance spectroscopy (EIS). Notably, the MXene/PPy composite electrode exhibited a high specific capacitance of 905 F g⁻¹ at a scan rate of 0.05mVs⁻¹, indicating its strong potential for high-performance energy storage applications.</p>