Zinc oxide nanoparticles and activated charcoal-based nanocomposite electrode for supercapacitor application

Yadav, Mahendra Singh; Singh, Narendra; Bobade, Santosh M.

doi:10.1007/s11581-018-2527-1

Cited by 37 publications

(11 citation statements)

References 64 publications

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“…S3a † is characterized by a quasi-rectangular pattern, exemplifying the typical electric double-layer behavior. 41 Fig. 1d and e show good rate performance of ZHSCs using ferrocene/AC.…”

Section: Resultsmentioning

confidence: 76%

Organic–inorganic hybrid ferrocene/AC as cathodes for wide temperature range aqueous Zn-ion supercapacitors

Zhang

Feng

et al. 2022

RSC Adv.

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“…S3a † is characterized by a quasi-rectangular pattern, exemplifying the typical electric double-layer behavior. 41 Fig. 1d and e show good rate performance of ZHSCs using ferrocene/AC.…”

Section: Resultsmentioning

confidence: 76%

Organic–inorganic hybrid ferrocene/AC as cathodes for wide temperature range aqueous Zn-ion supercapacitors

Zhang

Feng

et al. 2022

RSC Adv.

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“…In Figure 7 the X-ray diffraction pattern (XRD) of electrodeposited powder presents the characteristic wurtzite structure peaks (as can be checked from the overlaps on spectra "a" and "b"). When comparing card JCPDS#36-1451 [23] with the electrodeposited sample, the strongest peak observed at 36.26 • , corresponding to plane (101), ensures a strong crystallinity due to its tiny full width half maximum.…”

Section: Zno Characterizationmentioning

confidence: 99%

ZnO Electrodeposition Model for Morphology Control

Orozco-Messana

Camaratta

2022

Nanomaterials

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In this research, a model for electrodeposition of zinc oxide (ZnO) nanostructures over indium-doped tin-oxide (ITO) glass using pulsed current and zinc chloride as source of zinc was proposed. For the model, reactions kinetics rate constants were evaluated by obtaining the reaction product solid mass of the various species through time using an electrochemical quartz crystal microbalance (EQCM). To obtain a mathematical model of the electrodeposition using Ansys CFX 2D simulation software, the reaction kinetics rates were used to calculate mass transfer in the volume closest to the surface. The model was applied to the experimental electrodeposition conditions to validate its accuracy. Dense wurtzite nanostructures with controlled morphology were obtained on a indium-doped tin-oxide (ITO) glass. Sample characterization was performed using high-resolution field emission scanning electron microscopy (FESEM) and transmission electron microscopy (TEM) on focused ion beam milled (FIBed) sheets from wurtzite mono-crystals. Average crystallite size was evaluated by X-ray diffraction (XRD) using the Scherrer equation, and superficial areas were evaluated by Brunauer, Emmett, and Teller (BET) method. Through the experimental results, a chemical model was developed for the competing reactions based on the speciation of zinc considering pH evolution, and kinetic constants, on the oxygen rich aqueous environment. Owing to the model, an accurate prediction of thickness and type of electrodeposited layers, under given conditions, is achieved. This allows an excellent control of the optical properties of Wurtzite as a photon absorber, for an efficient separation of the electron-hole pair for conduction of the electric charges formed. The large surface area, and small wurtzite crystallites evenly distributed on the thin film electrodeposited over the ITO conductive layer are promising features for later dye-sensitized photovoltaic cell production.

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“…The single diffraction peak of ZnO crystal film is matched with the hexagonal wurtzite crystal structure (JCPDS No. 00-036-1451) with an orientation of (103)[19]. No other peaks are detected in the diffractogram, indicating no impurities or different phases formed in the thin film.…”

mentioning

confidence: 92%

Lithium doping effect on microstructural and electrical properties of zinc oxide thin film grown by metal-organic chemical vapor deposition

Mustajab

Winata²,

Arifin³

2022

J. Phys.: Conf. Ser.

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In this study, the undoped and Li-doped ZnO thin films were grown on Si(100) substrate using metal-organic chemical vapor deposition (MOCVD). Zinc acetylacetonate hydrate and lithium acetylacetonate solution were used as ZnO thin film precursor and Li dopant source. The effect of lithium doping on microstructural was characterized using a scanning electron microscope (SEM) and X-ray diffractometer (XRD). XRD diffractogram analysis shows that undoped and Li-doped ZnO thin films have polycrystalline hexagonal wurtzite structures with preferred peak crystal orientation (103). Li doping slightly changes the lattice parameters and cell volume of ZnO thin films through the increase of crystallite size and slightly affects the surface morphology of ZnO thin films. Current-voltage (I-V) measurement and four-point probe method were used to measure the electrical properties of lithium doped ZnO thin films. The electrical conductivity of ZnO thin films increases as Li doping is given compared to undoped films. These results are also supported by the I-V curve of Li-doped ZnO thin films by having a higher slope, indicating improvement in electrical properties.

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Zinc oxide nanoparticles and activated charcoal-based nanocomposite electrode for supercapacitor application

Cited by 37 publications

References 64 publications

Organic–inorganic hybrid ferrocene/AC as cathodes for wide temperature range aqueous Zn-ion supercapacitors

Organic–inorganic hybrid ferrocene/AC as cathodes for wide temperature range aqueous Zn-ion supercapacitors

ZnO Electrodeposition Model for Morphology Control

Lithium doping effect on microstructural and electrical properties of zinc oxide thin film grown by metal-organic chemical vapor deposition

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