Аннотация
Abstract This study prepared nitrogen-rich Fe MOFs precursors with regular cubic morphology using a microwave-assisted synthesis method, and further obtained nitrogen-doped porous carbon material (N-C-800) through high-temperature carbonization. Electrochemical performance tests show that the material exhibits excellent energy storage performance in a 0.5 M H2SO4 electrolyte: with a specific capacitance of up to 365 F/g at a current density of 1 A/g, it also has excellent rate performance (maintaining 212 F/g at 30 A/g) and ultra long cycle stability (capacity retention rate of 99.5% after 10000 cycles at 10 A/g). This excellent electrochemical performance is attributed to the unique hierarchical pore structure, high nitrogen doping, and morphology inherited from the precursor of the material, which synergistically promote rapid ion transport and adequate charge storage. This study provides new ideas for the development of high-performance supercapacitor electrode materials, which have significant potential in high-frequency and high-power applications such as start-stop systems for new energy vehicles.