Design of MnS@MWCNT Nanocomposite Cathode for Ultra-high Efficient Supercapacitors

The aim of this study was to investigate the usability of MnS (Manganese Sulfide) nanoparticlesin supercapacitor applications. MnS nanoparticles were synthesized using the microwave synthesis method.Additionally, a multi-walled carbon nanotube (MWCNT) was incorporated into the MnS structure toprepare MnS@%10MWCNT. The microwave synthesis method was chosen due to its fast, energy-efficient,and easily controllable synthesis process. The size and morphological properties of the synthesizednanoparticles were determined using analytical techniques such as X-ray diffraction (XRD) and scanningelectron microscopy (SEM). The results demonstrated that the microwave-synthesized MnS nanoparticlespossessed a crystalline structure and a homogeneous distribution. The incorporation of MWCNT wasconfirmed through SEM images and XRD analysis. Subsequently, the usability of the synthesized MnS andMnS@%10MWCNT nanoparticles in supercapacitor applications was evaluated. The supercapacitorperformance was examined using electrochemical characterization methods such as cyclic voltammetry andcontinuous charge-discharge tests. The results of the study revealed that MnS nanoparticles exhibited highcapacitance and fast charge-discharge characteristics in supercapacitor devices. Furthermore, it wasobserved that the capacitance and stability increased with the incorporation of MWCNT. This studydemonstrates the potential of MnS and MnS@%10MWCNT nanoparticles in energy storage. Themicrowave-synthesized MnS and MnS@%10MWCNT nanoparticles highlight their potential insupercapacitor applications. These findings represent an important step towards the expansion ofnanomaterials' utilization in energy storage and the development of more efficient supercapacitor devices.