Hierarchical MoS2 incorporated Ti3C2 MXene nanohybrids system for enhanced supercapacitor application

Two-dimensional (2D) layered nanomaterials exhibit unique performance as supercapacitor electrode materials owing to their outstanding conductivity, exclusive physicochemical properties, and unique compositions. 2D layered materials are highly suitable for supercapacitor applications due to their large surface area, short ion diffusion paths, and excellent electrical conductivity. The present work aims on the hydrothermal synthesis of MoS2/Ti3C2 MXene heterostructure nanohybrid that could synergize the energy storage aspects. XRD pattern signifies the widened interlayer spacing of MXene as a result of the intercalation of MoS2. SEM and HRTEM micrographs endorse flower like MoS2/MXene with the crystallite size of 0.65 nm developed successfully by way of facile hydrothermal technique. BET studies reveal the enlarged specific surface area of the material. XPS divulges the strong contact between MXene and MoS2, united with ordered structure that interprets stable chemical states. The specific capacitances of MoS2/Ti3C2 MXene attained from the CV curves are 152, 135.6, 114.8, 101.1, 90.1, and 80.4 F/g at 10, 20, 40, 60, 80, and 100 mV/s, respectively, and from the GCD curves, the specific capacitances of the MoS2/Ti3C2 MXene were obtained to be 123.5, 61, 58.6, 55.5, and 46.6 F/g at various current densities ranging from 0.33 to 1 A/g. The electrode material, MoS2/MXene, showed a capacitive retention of 88% after 5000 cycles. The electrochemical impedance analysis indicates that the integration of MoS2 declines the charge transfer resistance. Inclusively, the electrochemical behavior of MoS2/MXene unveiled outstanding cycle stability, reversibility, and performance of rate. The achieved results expose MoS2/MXene as auspicious electrode materials for supercapacitor applications.