A novel supercapacitor based on cerium sulfide and graphene oxide nanocomposite was synthesized with high power density by hydrothermal method in the existence (presence) of Graphene oxide (GO). The Graphene based materials have been assumed to be auspicious candidate for renewable energy applications as due to its unique monolayer bonding configuration of graphene oxide it provides large surface area to metal oxide or metal sulfides that enhance the capacitance of composite of GO/metal sulfide. Characterization of the prepared GO/Ce2S3 composite samples was done by XRD, SEM, FTIR and Raman spectroscopy. Cyclic volumetric (CV), galvanostatic charge-discharge (GCD) and the electrochemical impedance were performed in 2 M KOH solution to investigate electrochemical measurements. Electrochemical characterization of composite revealed that by introducing the rare earth sulfide in GO, the power density of material increases more than 3 times at a current density of 0.3Ag⁻¹using GCD graph. The specific capacitance of composite at scan rate of 10 mV/s is 53 F/g which is comparable to GO (59 F/g) but on the other hand the power density of composite is 9 times greater than power density of GO. The above mentioned characteristics make this fabricated composite to be more compatible candidate for electrochemical application with high power and energy density.

在氧化石墨烯（GO）的存在（存在）下，通过水热法合成了一种基于硫化铈和氧化石墨烯纳米复合材料的新型超级电容器，具有高功率密度。石墨烯基材料被认为是可再生能源应用的理想候选者，因为其独特的氧化石墨烯单层键合结构为金属氧化物或金属硫化物提供了大表面积，从而提高了 GO/金属硫化物复合材料的电容。通过 XRD、SEM、FTIR 和拉曼光谱对制备的 GO/Ce2S3 复合样品进行表征。循环体积 (CV)、恒电流充放电 (GCD) 和电化学阻抗在 2 M KOH 溶液中进行，以研究电化学测量。^-1使用 GCD 图。复合材料在 10 mV/s 扫描速率下的比电容为 53 F/g，与 GO (59 F/g) 相当，但另一方面，复合材料的功率密度是 GO 功率密度的 9 倍。上述特性使这种制造的复合材料更适合用于具有高功率和能量密度的电化学应用。