Moringa Oleifera leaf extract mediated synthesis of reduced graphene oxide-vanadium pentoxide nanocomposite for enhanced specific capacitance in supercapacitors

An aqueous rechargeable and high-capacity zinc ion battery using a novel rGO–V2O5–SiO2 hybrid nanocomposite as a cathode material

“…This dispersion is facilitated by the presence of V 2 O 5 nanoparticles resulting in increased interlayer spacing that may affect the crystal structure of the composite. 39 Raman spectra have also been investigated to analyze the vibrational modes of the nanocomposite. There has been found a series of feature peaks at 98.03, 172.89, 272.52, 431.52, 509.16, 696.85, 1013, 1353, and 1595.63 cm À1 corresponding to vibration spectra of V 2 O 5 , SiO 2 and rGO.…”

“…This dispersion is facilitated by the presence of V 2 O 5 nanoparticles resulting in increased interlayer spacing that may affect the crystal structure of the composite. 39…”

Green supercapacitors: review and perspectives on sustainable template-free synthesis of metal and metal oxide nanoparticles

“…Its poor conductivity can overcome by anchoring materials based on carbon. 120 T. N. Vinuth Raj et al 121 used Moringa oleifera as a reducing agent for the synthesis of an RGO/V 2 O 5 nanocomposite, which exhibited a high capacitance of 906 F g −1 at a scan rate of 2 mV s −1 compared to pure RGO and V 2 O 5 due to its surface area and conductivity. Manganese oxide (Mn 3 O 4 ) is another prominent supercapacitor electrode material prepared from olive leaf extract with Na 2 SO 4 as the electrolyte, exhibiting a specific capacitance of 583.7 F g −1 .…”

Synthesis of Niobium Pentoxide and Its Reduced Graphene Oxide Nanocomposite for Enhanced Supercapacitor Applications

“…To synthesize RGO-Nb2O5, start by preparing graphene oxide (GO) using the modified Hummers method. Next, exfoliate the GO by sonicating it in water or a suitable solvent to obtain reduced graphene oxide (RGO) sheets [21]. Then, mix the RGO sheets and Nb2O5 nanoparticles in a solvent, such as ethanol or water, and sonicate the mixture to ensure a homogeneous dispersion.…”