Research Progress of MOFs and Their Derivatives as Cathode Materials for Sodium-Ion Batteries

Benefiting from the remarkable advantages of abundant sodium resource reserves and low cost, sodium-ion batteries (SIBs) have emerged as one of the most promising alternative technologies to lithium-ion batteries. However, SIBs still face several technical challenges in practical applications, particularly regarding the energy density and electrochemical performance of cathode materials. Metal-organic frameworks (MOFs), as materials with highly tunable pore structures, excellent specific surface areas, and favorable electrochemical properties, exhibit broad application prospects in batteries. MOFs materials not only possess unique advantages in energy storage but also can further enhance their electrical conductivity, structural stability, and cycling performance through strategies such as metal ion doping and carbon coating. This paper reviews the progress in the application of MOFs and their derivatives as cathode materials for sodium-ion batteries, elaborates on their structural characteristics, preparation methods, and electrochemical reaction behaviors, and focuses on analyzing the core advantages of such materials in improving the electrochemical performance of sodium-ion batteries. Finally, the paper prospects the future development directions and challenges of MOFs materials in sodium-ion battery cathode materials.