The development of efficient anode materials for carbon?based sodium ion batteries(SIBs) is a hot research topic. The prereduced graphene oxide(GO) was annealed at different temperatures to obtain wavy reduced graphene oxide(rGO) with different interlayer spacings for sodium?ion batteries(SIBs) anodes, and the electrolyte was further regulated to explore the relationship between the microstructure of graphene and sodium storage performance and sodium storage mechanism. The rGO anode after balancing the tuning layer spacing and conductivity shows a high initial coulombic efficiency of 82% in SIBs and excellent cycle stability of 93% capacity retention after 100 cycles through the sodium storage mechanism of intercalation and solvation Na⁺ co?adsorption in ether electrolyte.

Graphene exhibits outstanding mechanical,electrical,thermal,and optical properties,showcasing immense potential in enhancing the performance of polyimide composites.The unique two?dimensional characteristics of graphene allow for easy structural design and functional modification,presenting new opportunities for synthesizing polyimide composites with special functionalities.This review article provides a comprehensive overview of the research progress in graphene/polyimide nanocomposites in areas such as conductivity,mechanical properties,thermal properties and electromagnetic shielding.A systematic analysis was conducted on the influence of graphene's structure and functional modification on the performance of graphene/polyimide nanocomposites.Additionally,the application domains of different types of graphene/polyimide composites were discussed,with a detailed exploration of the interface interactions between graphene and the polyimide matrix and their impact on the properties of the nanocomposites.This article serves as a reference and inspiration for the subsequent development of multifunctional and high?performance graphene/polyimide nanocomposites.