Facile fabrication of manganese telluride and graphene oxide nanostructure for robust energy storage systems

This study presents hydrothermal synthesis of manganese telluride supported on graphene oxide (MnTe/GO) nanostructure, showcasing its exceptional potential as a material for supercapacitor applications. The thorough characterization of synthesized materials encompasses a variety of methodologies, notably X-ray diffraction (XRD), scanning electron microscopy (SEM), and Brunauer Emmet-Teller (BET) analysis, which collectively elucidate their structural, morphological, and textural attributes. Electrochemical assessments, employing established techniques such as cyclic voltammetry (CV), galvanostatic charge-discharge (GCD), electrochemical impedance spectroscopy (EIS), and determination of electrochemical active surface area (ECSA), validate the exceptional performance of the synthesized materials. The nanocomposite MnTe/GO exhibits a heightened specific capacity (Csp) of 2203 F g⁻¹ at a current density of 2 A g⁻¹, demonstrating an impressive retention rate of 99% over 2000 cycles, thus highlighting its superior stability. These enhanced electrochemical capabilities are ascribed to the effective incorporation of MnTe into GO sheets, facilitating electron transfer and augmenting the active electrochemical surface area. Consequently, the electroactive nanocomposites, featuring metal telluride nanostructures, emerge as promising candidates for next-generation, high-performance supercapacitor applications.