Hierarchical grass-like NiCo2O4 nanowires grown on nickel foam as a binder-free supercapacitor electrode. (2023)

• Record Type: Journal Article
• Authors: Yadav, Sarita; Sharma Ghrera, Aditya; Devi, Ambika
• Is Part Of: Materials today. Volume 74(2023)Part 2
• Page Start: 281
• Page End: 288
• Publication Date: 2023
• Subjects: Supercapacitor -- Nickel cobaltite -- Nickel foam -- Hydrothermal technique; Materials science -- Congresses -- Periodicals; 620.1
• DOI: 10.1016/j.matpr.2022.08.240
• Languages: English
• ISSNs: 2214-7853

Abstract

Abstract: Hierarchical interconnected grass-like NiCo2 O4 nanowires are successfully developed on conducting nickel foam as a binder-less supercapacitor electrode. The hydrothermally synthesized electrode delivered a gravimetric specific capacitance of 361 Fg −1 and a high rate capability of 84 % at a high current density of 5Ag −1 . An enhancement in the cycling behavior with excellent capacitance retention of 105 % is achieved after 2000 continuous charge–discharge cycles. The remarkable performance could be ascribed to the porous hierarchical grass-like morphology of NiCo2 O4 and the 3D interlinked scaffold of conducting nickel foam. The novel grass-like NiCo2 O4 /Ni can be considered a promising electrode for supercapacitor application.