부산대학교 도서관

In this paper, MnSO_4, KMnO_4 and C_3N_4 were used as starting materials to synthesize C_3N_4/MnO_2 composite materials by hydrothermal method. The synthesized materials were characterized by X‐ray diffraction analysis. The energy storage performances of the synthesized electrode materials were tested by galvanostatic charge‐discharge test and cyclic voltammetry. The charge transfer kinetics of electrode materials was studied by electrochemical impedance spectroscopy. The effect of C_3N_4 on the electrochemical properties of MnO_2 electrode materials was studied in detail. The results show that the addition of C_3N_4 can significantly improve the specific capacitance, stability and charge storage capability of MnO_2 electrode material, which provides a new direction for the research of supercapacitors with better performance.