采用碳辅助法和原位沉降法将Co₃O₄与石墨相氮化碳（g-C₃N₄）进行复合得到Co₃O₄/g-C₃N₄复合材料。利用XRD、SEM、TEM等多种表征手段对Co₃O₄和Co₃O₄/g-C₃N₄复合材料进行表征。结果表明，Co₃O₄均匀分布在g-C₃N₄片层中形成了（2D-3D）新型结构。电化学性能测试结果表明，Co₃O₄/g-C₃N₄复合材料电流密度为1 A/g时，比电容达到1 071 F/g，比纯Co₃O₄提升4.9倍；在电流密度为10 A/g时，经过1 000次循环，比电容仍能保持95.5%。

Co₃O₄/g-C₃N₄ composite material is synthesized jointly by carbon assisted method and in situ deposition method with Co₃O₄ and graphite carbon nitride (g-C₃N₄) as raw materials.X-ray diffraction (XRD),scanning electron microscope (SEM),transmission electron microscope (TEM),and other characterization methods are employed to characterize Co₃O₄ and Co₃O₄/g-C₃N₄ composite materials.Results show that Co₃O₄ distributes uniformly within g-C₃N₄ laminates to form a new structure (2D-3D).Electrochemical performance test results show that the specific capacitance of Co₃O₄/g-C₃N₄ reaches 1,071 F·g^-1 when the current density is 1 A·g^-1,which is 5.9 times that of pure Co₃O₄.The specific capacitance of Co₃O₄/g-C₃N₄ remains 95.5% after 1,000 cycles when the current density is 10 A·g^-1.

常柳(1996-),女,硕士研究生,研究方向为超级电容器电极材料,992504746@qq.com