Structural analysis and redox additive electrolyte based supercapacitor performance of ZnO/CeO2 nanocomposite

Arunpandiyan, S.; Bharathi, S.; Pandikumar, Alagarsamy; Arasi, S. Ezhil; Arivarasan, A.

doi:10.1016/j.mssp.2019.104765

Cited by 74 publications

(13 citation statements)

References 32 publications

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“…Only peaks associated with Co, Ce and O were observed, which confirms the purity of material. Whereas some very small peaks are may be due to the carbon substrate employed for preparing the sample for SEM/EDS investigation and produced from noise 42 …”

Section: Resultsmentioning

confidence: 99%

“…Whereas some very small peaks are may be due to the carbon substrate employed for preparing the sample for SEM/EDS investigation and produced from noise. 42 estimated with this technique. It was observed that the nanoflakes developed from interconnected nanoparticles having average size between 40 and 50 nm and particle size is reduced in comparison to CoCe-0 sample ( Figure 3D).…”

Section: Microstructural and Elemental Analysis 321 | Sem And Edxmentioning

confidence: 96%

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Hydrothermal synthesis of cerium‐doped Co ₃ O ₄ nanoflakes as electrode for supercapacitor application

et al. 2020

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Summary In this work, cerium was doped in various concentrations ranging from 1.0 to 7.0 at. % by means of a facile hydrothermal synthesis route with an intention to improve the capacitive properties of Co3O4. X‐ray powder diffraction (XRD), scanning electron microscopy coupled with energy dispersive X‐ray spectroscopy (EDX) and HRTEM were employed to study the structural characteristics, morphology, elemental constitution and d‐spacing of the synthesized material. The capacitive characteristics were analyzed through cyclic voltammetry (CV), galvanostatic charge‐discharge (GCD) test and electrochemical impedance spectroscopy (EIS). Materials characterizations revealed the formation of pristine and Ce‐doped Co3O4 nanoflakes, and their average size was in the range of 45 to 55 nm and possessing excellent elemental purity. The CV test showed that 5.0 at. % Ce‐doped Co3O4 nanoflakes deliver outstanding specific capacitance, that is, 1309.6 F/g and excellent cyclic stability of 90.86% after 2000 CV cycles at a scan rate 5 mV/s. The GCD test at 1‐10 A/g showed excellent rate capability, that is, 82.87% at high current density of 10 A/g. The EIS test revealed excellent electrical conductivity of the material. Experimental results suggest that Ce‐doped Co3O4 has an outstanding potential for use in energy storage devices.

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Section: Resultsmentioning

confidence: 99%

Section: Microstructural and Elemental Analysis 321 | Sem And Edxmentioning

confidence: 96%

Hydrothermal synthesis of cerium‐doped Co ₃ O ₄ nanoflakes as electrode for supercapacitor application

et al. 2020

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“…[ 45 ] ZnO nanoparticles showed the highest capacitance. The electrochemical performance of ZnO can be improved via conjugation with other metal oxides such as MnO x , [ 46 ] NiO/graphene oxide (GO), [ 47 ] CeO 2 , [ 48 ] (Ni, Co)Se 2 , [ 50 ] Co 3 O 4 , [ 51 ] cellulose nanofibers, [ 52 ] and ZIF‐8. [ 44 ] ZnO/MnO x nanocomposites provided a capacitance of 556 F·g −1 at a current density of 1 A·g −140 .…”

Section: Resultsmentioning

confidence: 99%

A high‐performance hybrid supercapacitor electrode based on ZnO/nitrogen‐doped carbon nanohybrid

Abdelhamid

Kiey

Sharmoukh

2021

Applied Organom Chemis

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Hybrid nanomaterials offer promising properties to serve as an electrode for hybrid supercapacitors. Herein, dye (rhodamine B, RhB) encapsulated zeolitic imidazolate frameworks (RhB@ZIF-8) was synthesized at room temperature via triethylamine (TEA)-assisted method. The material was used as a precursor for synthesizing zinc oxide embedded nitrogen-doped carbon (ZnO@N-doped C) via the carbonization at different temperatures (400 C, 600 C, and 800 C). The materials were characterized using X-ray diffraction (XRD), thermogravimetric analysis (TGA), differential thermal analysis (DTA), highresolution transmission electron microscope (HR-TEM), energy-dispersive X-ray mapping (EDX), nitrogen adsorption-desorption isotherm, and X-ray photoelectron microscope (XPS).

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“…Numerous ZnO-based electrode materials are fabricated, such as carbon material-ZnO electrode [ 137 , 138 , 139 ], medal oxides-ZnO electrode [ 140 , 141 , 142 ], and polymer-ZnO electrode [ 143 , 144 ], for the purpose of pursuing good electrochemical performance. With asphalt as carbon source and ZnO as template, graphene nanocapsules (GNCs) [ 145 ] were synthesized by in situ KOH activation technology.…”

Section: Tmos-based Electrode Materialsmentioning

confidence: 99%

Transition Metal Oxide Electrode Materials for Supercapacitors: A Review of Recent Developments

et al. 2021

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In the past decades, the energy consumption of nonrenewable fossil fuels has been increasing, which severely threatens human life. Thus, it is very urgent to develop renewable and reliable energy storage devices with features of environmental harmlessness and low cost. High power density, excellent cycle stability, and a fast charge/discharge process make supercapacitors a promising energy device. However, the energy density of supercapacitors is still less than that of ordinary batteries. As is known to all, the electrochemical performance of supercapacitors is largely dependent on electrode materials. In this review, we firstly introduced six typical transition metal oxides (TMOs) for supercapacitor electrodes, including RuO2, Co3O4, MnO2, ZnO, XCo2O4 (X = Mn, Cu, Ni), and AMoO4 (A = Co, Mn, Ni, Zn). Secondly, the problems of these TMOs in practical application are presented and the corresponding feasible solutions are clarified. Then, we summarize the latest developments of the six TMOs for supercapacitor electrodes. Finally, we discuss the developing trend of supercapacitors and give some recommendations for the future of supercapacitors.

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Structural analysis and redox additive electrolyte based supercapacitor performance of ZnO/CeO2 nanocomposite

Cited by 74 publications

References 32 publications

Hydrothermal synthesis of cerium‐doped Co ₃ O ₄ nanoflakes as electrode for supercapacitor application

Hydrothermal synthesis of cerium‐doped Co ₃ O ₄ nanoflakes as electrode for supercapacitor application

A high‐performance hybrid supercapacitor electrode based on ZnO/nitrogen‐doped carbon nanohybrid

Transition Metal Oxide Electrode Materials for Supercapacitors: A Review of Recent Developments

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Structural analysis and redox additive electrolyte based supercapacitor performance of ZnO/CeO2 nanocomposite

Cited by 74 publications

References 32 publications

Hydrothermal synthesis of cerium‐doped Co 3 O 4 nanoflakes as electrode for supercapacitor application

Hydrothermal synthesis of cerium‐doped Co 3 O 4 nanoflakes as electrode for supercapacitor application

A high‐performance hybrid supercapacitor electrode based on ZnO/nitrogen‐doped carbon nanohybrid

Transition Metal Oxide Electrode Materials for Supercapacitors: A Review of Recent Developments

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Hydrothermal synthesis of cerium‐doped Co ₃ O ₄ nanoflakes as electrode for supercapacitor application

Hydrothermal synthesis of cerium‐doped Co ₃ O ₄ nanoflakes as electrode for supercapacitor application