Electrochemical performance comparison study of ternary RGO/ß-Ni(OH) 2 -CeO 2 nanocomposite prepared from hydrothermal and solid-state methods for supercapacitors

• Published in: Advances in natural sciences. Nanoscience and nanotechnology 2021-03, Vol.12 (1), p.15016
• Main Authors: Godlaveeti, Sreenivasa Kumar, Jangiti, Sravani, Bharatiya, Debasrita, Somala, Adinarayana Reddy, Sana, Siva Sankar, Nagireddy, Ramamanohar Reddy
• Format: Article
• Language: English
• ISSN: 2043-6262; 2043-6262
• DOI: 10.1088/2043-6262/abebd5

In this paper, a novel ternary RGO/ β -Ni(OH) 2 -CeO 2 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 -CeO 2 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 , CeO 2 compounds. The obtained electrochemical results show that the present novel ternary RGO/ β -Ni(OH) 2 -CeO 2 working electrode fabricated from the solid-state method is suitable for the next generation supercapacitor applications.