Co/Ni-MOF@MXene Electrode Material for High-performance Supercapacitor

Abstract

Rapid advances in the electronics industry have significantly increased the demand for high performance energy storage materials. In response, there has been a growing need in recent years to research and develop innovative materials that offer both stability and high capacity for application in sustainable energy conversion and storage systems. Large specific surface area, controllable pore pattern, tunable framework architecture, excellent electrochemical energy storage performance of MOFs. Nevertheless, in the areas of energy storage, practical applications are restricted because of their stability and structure. Herein, Co/Ni-MOF nanowires were synthesised on Ti₃C₂T_x MXene by a two-step hydrothermal method. Benefitting from excellent wettability of Ti₃C₂T_x MXene with the electrolyte and its high conductivity. The electrochemical exploration of Co/Ni-MOF@Ti₃C₂T_x MXene composite via CV, GCD, and EIS measurements showed excellent performance. It had a specific capacitance of 1019.5 F/g at 1 A/g due to synergistic effects. The MXene's structure provided a large surface area, facilitated electron transport and ion diffusion, and enhanced activity. The composite exhibited long-term stability, retaining 75.0% capacitance after 3500 cycles at 8 A/g. The MXene structure stabilized the MOF, enhancing energy storage. Findings suggest a strategy for using MOFs as electrode materials, overcoming challenges and opening new design avenues for energy storage systems.