Abstarct: The aim of this research is to synthesize two-dimensional nanoparticles Ti_3 C_2 T_x and to investigate the effect of power parameter of plasma sputtering device with Argon atmosphere on surface morphology, structural, chemical and electrochemical properties of synthesized Ti_3 C_2 T_x samples before and after plasma processing. In this regard, the material with MAX phase structure called Ti_3 AlC_2 was produced from 2TiC/Al/Ti powder mixture during steps such as ball mill and high temperature oven and then, material with MXene phase structure called Ti_3 C_2 T_x was fabricated from precursor Ti_3 AlC_2 using 40% hydrofluoric acid (HF). In order to investigate the effect of plasma processing on this material, field emission scanning electron microscopy (FESEM), X-ray diffraction (XRD), Raman spectroscopy, Fourier Transform Infrared Spectroscopy with Attenuated Total Reflectance (FTIR-ATR), optical emission spectroscopy (OES) and cyclic voltammetry (CV) were used. The results indicated that the change of plasma power parameter has a great effect on the structural, chemical and finally electrochemical properties of Ti_3 C_2 T_x. In the samples, after processing the Argon plasma, changes were made such as increasing interlaxyer distance and change in the surface functional groups which in turn causes an increase in the electrochemical performance of the sample.