Metal-Organic Frameworks Meet MXene:New Opportunities for Electrochemical Application

Over the past few decades,metal-organic frameworks(MOFs)have been recognized as the most attractive energy-involved materials due to their unique features,including ultrahigh specific surface area,superior porous structure,and excellent customizability.Nevertheless,most pristine MOFs suffer from low electronic conductivity and chemical instability,which severely hindered their large-scale applications.Recently,MXene with abundant surface terminations and high metallic conductivity have been suggested as a valid substrate to improve the stability and conductivity of pristine MOFs.Importantly,MXene/MOF composites with enhanced conductivity,rich surface chemistry,and hierarchical structure facilitate the rapid electron/ion transfer and deliver better electrochemical properties than that of original materials through synergistic effects.Moreover,MXene/MOF composites can be designed into various derivatives with desired architecture and enhanced electrochemical performance.Therefore,the elaborate synthesis of MXene/MOF hybrids and their derivatives for energy-involved devices are of great interest.Herein,we provided a state-of-the-art review on the progress of MXene/MOF composites and their derivatives in terms of synthesis strategies and electrochemical applications.Furthermore,we put forward current challenges and feasible research directions for future development.