Carbon coated cobalt oxide (CC-CO₃O₄) as electrode material for supercapacitor applications

Abstract

Carbon coated cobalt oxide (CC-Co3O4) was synthesized using sucrose and cobalt oxide. CC-Co3O4 can be used as electrode material for supercapacitor applications

Utilization of compressible hydrogels as electrolyte materials for supercapacitor applications

“…6d, it can be seen that the control sample shows the triangular feature, which shows the formation of a double layer at the electrode–electrolyte interface, whereas CoO@Co 3 O 4 with Ag shows the deviation of triangular features due to the increase in the content of Ag, confirming the dominance of pseudocapacitance behaviour in the system. 45,46 This increase in the value of capacitance also arises from the fact that the conductivity of the CoO samples increases with the increase in the content of silver particles. Additionally, the silver nanoparticle balls of size 1–5 nm were distributed uniformly on the surface of CoO@Co 3 O 4 , as confirmed by STEM studies.…”

Ball‐milling route to design hierarchical nanohybrid cobalt oxide structures with cellulose nanocrystals interface for supercapacitors

“…Which shows specific capacitances of 273 F/g at a charge-discharge density of 0.5 A/g. 56 The carbon coated cobalt oxide electrode materials reported by Kumar et al 57 exhibit a specific capacitance of 395 F/g at a scan rate of 5 mV/s and 90% capacitance retention over 2,000 cycles 57 ; cobalt oxide (Co 3 O 4 )/graphene composites 58 exhibited similar specific capacitance values (396 F/g). By adopting thermal reduction process, Ramesh et al 59 utilized equimolar stannous and cobalt precursor solutions with N-doped graphene oxides to afford SnO 2 @Co 3 O 4 /NGO composites.…”

Enhanced Cyclic Stability of Cobalt Doped Bi25FeO40/BiFeO3 as an Electrode Material for a Super Long Life Symmetric Supercapacitor Device

“…While increasing the scan rate, the electrolytic ions store only on the surface of the electrode because of slow ionic diffusion, but at lower scan rates, the electrolytic ions have sufficient time to penetrate into the pores of the active material, and this may enhance the specific capacitance at lower scan rates compared to high scan rates for all composites. 15,58 To obtain an insight on the charge storage dynamics of the BFCO3 electrode, the b value (slope) was determined from the CV spectra using the Dunn power law relationship as given below:…”