Flexible Supercapacitor Electrodes Based on Nitrogen-Doped Carbon Derived from Polyimide/Graphene

The article delves into the synthesis of flexible supercapacitor electrodes based on nitrogen-doped carbon derived from polyimide and graphene. The study begins with an introduction to the rapid development of flexible wearable electronic devices and the importance of flexible supercapacitors. It then discusses the preparation methods of nitrogen-doped carbon materials, focusing on the use of aromatic polyimides as precursors. The main body of the work presents the synthesis of nitrogen-doped carbon supported on carbon cloth using high-temperature pyrolysis. The results showcase the exceptional performance of the electrode, with a specific capacitance of 669 F g^-1 at a current density of 0.5 A g^-1 and remarkable cycle stability. The article concludes with a detailed analysis of the morphology and structure of the flexible electrode materials, emphasizing their potential in enhancing the pseudocapacitance of supercapacitors.