Ternary mixed nickel cobalt iron oxide nanorods as a high-performance asymmetric supercapacitor electrode. (September 2019)

• Record Type: Journal Article
• Authors: Faid, Alaa Y.; Ismail, Hadeer
• Is Part Of: Materials today energy. Volume 13(2019)
• Page Start: 285
• Page End: 292
• Publication Date: 2019-09
• Subjects: Nanorods -- Ternary oxide -- Microwave -- Supercapacitors; Energy development -- Periodicals; Energy industries -- Periodicals; Power resources -- Periodicals; Energy policy -- Periodicals; Energy development; Energy industries; Energy policy; Power resources; Electronic journals; Periodicals; 621.042
• DOI: 10.1016/j.mtener.2019.06.009
• Languages: English
• ISSNs: 2468-6069

Abstract

Abstract: By utilizing a facile microwave process, ternary nickel cobalt iron oxide (NiCoFeO4 ) nanorods were synthesized. A comprehensive investigation of morphological, structural and surface chemistry of the nanorods has been carried out. The electrochemical investigation of NiCoFeO4 nanorods shows superior supercapacitive characteristics achieving a maximum specific capacitance ( C sp ) of 1263 F/g at a current density of 1 A/g and cyclic stability retaining 97.2% of capacitance after 2000 cycles. Asymmetric supercapacitor based on NiCoFeO4 nanorods displays a high-power density of 10 kW/kg, energy density of 9.8 W h/kg, coulombic efficiency of 95.5% and capacitance retention of 94% after 4000 cycles. The asymmetric supercapacitor is featuring an outstanding potential for practical supercapacitors due to high surface area nanorod morphology and mixed transition metal oxide synergetic effect. Graphical abstract: Image 1 Highlights: NiCoFeO4 nanorods fabricated through an easy, facile and one-step microwave process. NiCoFeO4 nanorods show specific capacitance ( C sp ) of 1263 F/g at a current density of 1 A/g. Asymmetric supercapacitor based on NiCoFeO4 nanorods displays a capacitance retention of 94% after 4000 cycles. High surface area nanorod morphology and mixed transition metal oxide synergetic effect.