A promising electrode material for energy storage, poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate)@graphite-phase C₃N₄ composite is reported, which is prepared by a simple direct mixing process. The contents of g-C₃N₄ in the composite are investigated and optimized to give the best supercapacitor characteristics. The composite shows a good specific capacitance of 277 F g⁻¹ at the current density of 1 A g⁻¹ in 1 M H₂SO₄. More significantly, the composite exhibits the energy density of 10.2 Wh kg⁻¹ at a power density of 4245 W kg⁻¹. After 5000 charge/discharge cycles, the capacitance retention rate still remains at 94.2%.

报道了一种有前景的储能电极材料，聚（3,4-乙撑二氧噻吩）：聚（苯乙烯磺酸盐）@石墨相C ₃ N ₄复合材料，它是通过简单的直接混合工艺制备的。研究并优化了复合材料中gC ₃ N ₄的含量，使其具有最佳的超级电容器特性。该复合材料在1 M H ₂ SO ₄中的电流密度为1 A g ^-1时显示出良好的277 F g ^-1的比电容。更重要的是，复合材料在4245 W kg ^-1的功率密度下表现出10.2 Wh kg ^-1的能量密度。经过5000次充电/放电循环后，电容保持率仍保持在94.2％。