Fabrication of efficient electrode material: CoxZn1-xFe2O4-graphene nano-heterostructures for high-performance supercapacitors. Issue 8 (1st June 2018)

• Record Type: Journal Article
• Authors: Nazim, Sidra; Shahid, Muhammad; Warsi, Muhammad Farooq; Agboola, Philips Olaleye; Khan, Muhammad Azhar; Shakir, Imran
• Is Part Of: Ceramics international. Volume 44:Issue 8(2018)
• Page Start: 9616
• Page End: 9622
• Publication Date: 2018-06-01
• Subjects: Co0.3Zn0.7Fe2O4 nanoparticles -- RGO -- Nanoheterostructures -- Electrochemical properties -- Supercapacitors; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2018.02.188
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: Co0.3 Zn0.7 Fe2 O4 nanoparticles prepared by co-precipitation method were characterized by X-ray diffraction (XRD). Reduced graphene oxide (rGO) was prepared by modified Hummer's route and then characterized by UV–Visible and XRD techniques. Nano-heterostructures of Co0.3 Zn0.7 Fe2 O4 with rGO were prepared using ultra-sonication technique. XRD analysis of Co0.3 Zn0.7 Fe2 O4 nanoparticles and Co0.3 Zn0.7 Fe2 O4 -rGO confirmed the cubic structure of ferrite nanoparticles. Cyclic voltammetry experiments showed that Co0.3 Zn0.7 Fe2 O4 -rGO nano-heterostructures exhibit the greater value of specific capacitance (151.33 Fg −1 ) as compared to Co0.30 Zn0.70 Fe2 O4 nanoparticles (91.20 Fg −1 ). These values of specific capacitance were observed at 10 mV s −1 . Moreover, electrochemical impedance spectroscopy showed that Co0.3 Zn0.7 Fe2 O4 -rGO nano-heterostructures have lower charge transfer resistance than the bare Co0.3 Zn0.7 Fe2 O4 nanoparticles. Electrochemical experiments illustrated that Co0.3 Zn0.7 Fe2 O4 -rGO nano-heterostructures have efficient energy storage properties and can be utilized for electrode's fabrication in supercapacitors.