Fast synthesis of Co₃O₄-MXene nanocomposites via microwave assistance for energy storage applications

The present study introduces a Co₃O₄ and Ti₃C₂Tₓ nanocomposite, synthesized via an ultrafast microwave-assisted method for electrochemical energy storage applications. Morphological and structural analyses indicated the formation of a nanoflower-like Co₃O₄-MXene nanocomposite, which is advantageous for the swift and efficient diffusion of electrolytes, thereby enhancing electrochemical performance. The growth of Co₃O₄ in a layered structure enhances ion diffusion. The Co₃O₄-MXene nanocomposite demonstrated a maximum specific capacitance of 868 F g⁻¹ at a current density of 1 A g⁻¹, along with excellent rate capability and cyclic stability. Furthermore, the assembled all solid-state asymmetric supercapacitor (ASC) exhibited an energy density of 10.41 Wh kg⁻¹ at a power density of 2500 W kg⁻¹, along with remarkable cycling stability, preserving 97.6 % of its initial capacitance after 5000 cycles. The obtained results demonstrate the significant improvement in electrochemical performance of Co₃O₄ due to addition of Ti₃C₂Tₓ.