Histidine-Derived N, O-Codoped Porous Carbon Materials as Supercapacitor Electrodes

in a three-electrode system. As a symmetric supercapacitor, it retains 95.7% capacitance after 40,000 cycles, demonstrating excellent cycling stability. This strategy effectively integrates a well-developed microporous structure with heteroatom modulation, offering a new approach for the design of high-performance carbon materials.