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

Abstract

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.