Synthesis of NiO/Fe2VO4 nano-hybrid structures via sonication induced approach for electrochemical energy storage in non-aqueous medium

• Published in: Journal of energy storage Vol. 68; p. 107873
• Main Authors: Cevik, Emre, Bozkurt, Ayhan, Gunday, Seyda Tugba, Qahtan, Talal F., Drmosh, Qasim A., Elsayed, Khaled A., Akhtar, Sultan, Mustafa, Ayyaz
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 15.09.2023
• Subjects: Energy storage; Nanocomposite electrode; NiO/Fe2VO4; Probe sonication; Supercapacitor; Supercapacitor; Probe sonication; NiO/Fe2VO4; Nanocomposite electrode; Energy storage
• ISSN: 2352-152X
• DOI: 10.1016/j.est.2023.107873

The design of scalable electrode materials has been the subject of research in energy storage for the advancement of the field. Herewith, we report on the metal oxide-based nanomaterials which were synthesized via facile sonication strategy and calcination by forming nano-hybrid material, NiO/Fe2VO4 (VFN) with a size of 5–10 nm. Activated carbon (AC) based nanocomposite electrodes with VFN (5–15 %) were produced having excellent physicochemical properties and better conductivity. The nanocomposite electrodes showed promising electrochemical performance with anhydrous glycerol/KOH gel electrolyte in supercapacitor application. The device with C/VFN15 electrodes in symmetric cell configuration displayed an excellent specific capacitance of 290 F g−1 at a current density of 1 A g−1 and specific energy of 40 Wh kg−1 at a power of 250 W kg−1 with non-aqueous electrolyte. The material exhibited promising cyclic stability up to 10,000 cycles retaining 90 % of its initial capacitance. In addition, a device with C/VFN15 was assembled and exhibited better performance and lighting a RGB LED under various angles. •Porous, superfine scalable NiO/Fe2VO4 electrode nanostructures was design and synthesized.•Promising supercapacitor performance obtained with anhydrous glycerol/KOH electrolyte.•Symmetric cell configuration displayed excellent capacitance of 290 F g−1.•A remarkable cyclic stability up to 10,000 cycles is reached retaining 90 % of its initial capacitance.