Speaker
Description
Porous carbon materials are widely recognized as promising electrode candidates for supercapacitors due to their high specific surface area and tunable pore architecture, which facilitate efficient ion adsorption and enhance electric double-layer capacitance (EDLC). Furthermore, heteroatom doping, particularly nitrogen incorporation, can introduce additional pseudocapacitive contributions via faradaic reactions, thereby improving overall electrochemical performance. In this work, nitrogen-doped porous carbon spheres (NPCSs) were synthesized and evaluated as electrode materials for supercapacitor applications. Among the samples, NPCS-1 exhibits superior electrochemical performance in 1 M H₂SO₄ electrolyte compared to solid carbon spheres, demonstrating enhanced capacitance. This improvement is attributed to its high specific surface area (640 m² g⁻¹) and well-developed mesoporous structure (~7 nm), which promotes efficient ion transport and charge storage. These findings highlight the synergistic effect of nitrogen doping and hierarchical porosity, establishing NPCSs as promising candidates for next-generation high-performance supercapacitor electrodes.