Synthesis, Characterization, and Supercapacitor Performance of a Mixed-Phase Mn-Doped MoS₂ Nanoflower

The fascinating features of 2D nanomaterials for various applications have prompted increasing research into single and few-layer metal dichalcogenides nanosheets using improved nanofabrication and characterization techniques. MoS₂ has recently been intensively examined among layered metal dichalcogenides and other diverse transition metal-based materials, that have previously been studied in various applications. In this research, we report mixed-phase Mn-doped MoS₂ nanoflowers for supercapacitor performance studies. The confirmation of the successfully prepared Mn-doped MoS₂ nanoflowers was characterized by XRD, SEM-EDS, RAMAN, and BET research techniques. The mixed-phase of the as-synthesized electrode material was confirmed by the structural changes observed in the XRD and RAMAN studies. The surface area from the BET measurement was calculated to be 46.0628 m²/g, and the adsorption average pore size of the electrode material was 11.26607 nm. The electrochemical performance of the Mn-doped MoS₂ electrode material showed a pseudo-capacitive behavior, with a specific capacitance of 70.37 Fg^-1, and with a corresponding energy density of 3.14 Whkg^-1 and a power density of 4346.35 Wkg^-1. The performance of this metal-doped MoS₂-based supercapacitor device can be attributed to its mixed phase, which requires further optimization in future works.