Here, cerium (IV) molybdate nanoparticles (CeMo₂O₈) are anchored on the surface of an N, P co-doped reduced graphene oxide nanocomposite by a stepwise sonochemical approach and further investigated as an electrode for supercapacitors. The cerium (IV) molybdate/N, P co-doped reduced graphene oxide symmetric electrode exhibits an outstanding specific capacitance of 638 F g⁻¹ at 2 mV s⁻¹. The prominent electrochemical capacitive properties of nanocomposite electrode are attributed to the merits of high electrically conductive N, P co-doped reduced graphene oxide and short ion transport channels provided by CeMo₂O₈ nanoparticles together with the synergistic effect between the two combinations. Furthermore, the symmetric supercapacitor based on CeMo₂O₈/N, P co-doped reduced graphene oxide electrodes demonstrates a high energy density (29.7 W h kg⁻¹ at 500 W kg⁻¹), good power density (16,000 W kg⁻¹ at 14.3 W h kg⁻¹), and remarkable cycling stability (102.9% capacitance retention after 4000 cycles at 100 mV s⁻¹). The results clearly show that co-doping small amounts of N and P onto the reduced graphene oxide, through a simple impregnating method, significantly improves the supercapacitive performance of the nanocomposite electrode.

在此，通过逐步声化学方法将钼酸铈（IV）纳米颗粒（CeMo ₂ O ₈）锚定在N，P共掺杂的还原型氧化石墨烯纳米复合材料的表面上，并进一步研究其作为超级电容器的电极。钼酸铈（IV）/ N，P共掺杂的还原氧化石墨烯对称电极在2 mV s ^-1下具有638 F g ^-1的出色比电容。纳米复合电极的突出的电化学电容特性归因于高导电性的N，P共掺杂的还原氧化石墨烯氧化物以及CeMo ₂ O ₈提供的短离子传输通道纳米颗粒以及两种组合之间的协同作用。此外，基于CEMO对称超电容器₂ ö ₈ / N，P共掺杂的还原氧化石墨烯电极演示了一个高能量密度（29.7 W时千克^-1在500瓦千克^-1），良好的功率密度（16,000千克w ^ ^{- 1}在14.3 W时千克^-1），和显着的循环稳定性（在100mV小号4000次循环后102.9％容量保持^-1）。结果清楚地表明，通过一种简单的浸渍方法，将少量的N和P共掺杂到还原的氧化石墨烯上，可以显着改善纳米复合电极的超电容性能。