In this paper, a novel ternary RGO/β-Ni(OH)₂-CeO₂ nanocomposite (NC) was synthesised through facile, one-step hydrothermal, and solid-state methods. The structural, morphological, and elemental composition analyses of powder composites were characterised by various techniques such as XRD, FTIR, TEM, and EDX. The electrochemical performance of RGO/β-Ni(OH)₂-CeO₂ composites prepared by hydrothermal and solid-state methods coated on Ni foam in presence of 3 M KOH an aqueous solution was studied through CV, GCD, and EIS techniques. The specific capacitance of 788 F g⁻¹ achieved at a current density 0.5 A g⁻¹ was observed for the SSM-2 sample at 250 C calcination temperature as a result of the synergic effect and combination of RGO, β-Ni(OH)₂, CeO₂ compounds. The obtained electrochemical results show that the present novel ternary RGO/β-Ni(OH)₂-CeO₂ working electrode fabricated from the solid-state method is suitable for the next generation supercapacitor applications.

在本文中，通过简便的一步水热和固态方法合成了一种新型三元 RGO/ β -Ni(OH) ₂ -CeO ₂纳米复合材料 (NC)。通过 XRD、FTIR、TEM 和 EDX 等多种技术对粉末复合材料的结构、形态和元素组成进行了表征。通过 CV、GCD 和 EIS 技术研究了在 3 M KOH 水溶液存在下，通过水热法和固态法制备的 RGO/ β- Ni(OH) ₂ -CeO ₂复合材料的电化学性能。788 F g ^-1的比电容在 0.5 A g ^-1的电流密度下实现由于 RGO、β- Ni(OH) ₂、CeO ₂化合物的协同作用和组合，在 250 C 的煅烧温度下观察到 SSM-2 样品的。获得的电化学结果表明，采用固态方法制备的新型三元RGO/ β- Ni(OH) ₂ -CeO ₂工作电极适用于下一代超级电容器应用。