Transition Metal Oxide-Based Nanomaterials for High Energy and Power Density Supercapacitor

Obodo, M; Nwanya, CC; Hassina, T; Kebede, Mesfin Abayneh; Ahmad, Ibrahim A.; Malik, Muhammad Imran; Ezema, F. I.

doi:10.1201/9780367855116-7

Cited by 8 publications

(3 citation statements)

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“…Transition-metal oxides (TMOs) are recurrently reported as faradic electrode materials demonstrating ideal characteristics toward SCs and batteries because of their high abundance, large surface area, and high specific capacitances and energy densities. , TMOs possess multiple oxidation states leading to enriched redox reactions for EES. − Single metal oxides, such as MnO 2, NiO, Co 3 O 4, Cr 2 O 3, Fe 2 O 3 , etc., were initially reported for SC applications. Recently, binary transition-metal oxides (BTMOs) have become the focus of studies due to their exceptional electrical conductivity and EES performance with respect to single metal oxides, e.g., NiCo-MOF, nickel ferrite oxide (NiFe 2 O 4 ) nanoparticles, nickel–cobalt oxides, NiMn 2 O 4, ZnFe2O4 nanorods, etc.…”

Section: Introductionmentioning

confidence: 99%

Improved Electrochemical Performance of Aqueous Hybrid Supercapacitors Using CrCo₂O₄ Mesoporous Nanowires: An Innovative Strategy toward Sustainable Energy Devices

Ahmad,

Khan,

Javed

et al. 2024

ACS Appl. Mater. Interfaces

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High-rate aqueous hybrid supercapacitors (AHSCs) have attracted relevant scientific significance owing to their expected energy density, supercapacitor-level power density, and battery-level energy density. In this work, a bimetallic nanostructured material with chromium-incorporated cobalt oxide (CCO, i.e., CoCr 2 O 4 ) was prepared via a hydrothermal method to form a stable cubic obelisk structure. Compared with CCO materials prepared using traditional methods, CCO displayed a nanowire structure (50 nm diameter), suggesting an enhanced specific surface area and a large number of active sites for chemical reactions. The electrode possessed a high specific capacitance (2951 F g −1 ) at a current density of 1 A g −1 , minimum R ct (0.135 Ω), and the highest capacitance retention (98.7%), making it an ideal electrode material for AHSCs. Ex situ analysis based on X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) showed a favorable stability of CCO after 10,000 cycles without any phase changes being detected. GGA and GGA + U methods employed in density functional theory (DFT) also highlighted the enhanced metallic properties of CCO originating from the synergistic effect of semiconducting Cr 2 O 3 and Co 3 O 4 materials.

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Section: Introductionmentioning

confidence: 99%

Improved Electrochemical Performance of Aqueous Hybrid Supercapacitors Using CrCo₂O₄ Mesoporous Nanowires: An Innovative Strategy toward Sustainable Energy Devices

Ahmad,

Khan,

Javed

et al. 2024

ACS Appl. Mater. Interfaces

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“…Unlike batteries, which also have a similar charge storage behavior, the pseudocapacitance in supercapacitors is a relay of the degree of charge reception and voltage fluctuation 16,17 . Nowadays, metal oxide and conducting polymer are used as the main sources of electrode materials that exhibit the pseudocapacitance effect 18,19 . Pseudocapacitors possess significant energy density and specific capacitance arising from a redox effect, compared to the electrochemical double‐layer capacitors.…”

Section: Introductionmentioning

confidence: 99%

“…16,17 Nowadays, metal oxide and conducting polymer are used as the main sources of electrode materials that exhibit the pseudocapacitance effect. 18,19 Pseudocapacitors possess significant energy density and specific capacitance arising from a redox effect, compared to the electrochemical double-layer capacitors. Low-power density is, however, a major drawback of pseudocapacitors.…”

Section: Introductionmentioning

confidence: 99%

Annealing optimization of graphitized Co₃O₄@CuO@NiO composite electrodes for supercapacitor applications

et al. 2022

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In recent times, carbon‐based material has received a keen interest in the fabrication of electrodes because it enhances the performance of energy storage devices. Amalgamated composites of three transition metals (Co3O4@CuO@NiO) and graphene oxide (GO) were fabricated employing the hydrothermal method. The performance of some fabricated electrodes was optimized by annealing using various temperatures, examined for supercapacitor application using a three‐electrode system. Our results indicate that Co3O4@CuO@NiO‐amalgamated electrode optimized using 100°C temperature shows enhanced features compared to deposited and other samples annealed at various temperatures. These discoveries also showed that Co3O4@CuO@NiO‐amalgamated electrode optimized using 100°C temperature delivered a specific capacitance of 1312 F/g from cyclic voltammetry analysis using 10.0 mV/s scan rate and 1258 F/g from galvanostatic charge–discharge analysis using 1.0 A/g current density. The cycling stability of electrodes annealed at 100°C was 92.5% after 10 000 cycles, indicating that annealing at 100°C enriched electrode characteristics.

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Recent Progress in Metal Oxide for Photovoltaic Application

Onah

Udeh

Ezugwu

et al. 2021

Chemically Deposited Nanocrystalline Metal Oxide Thin Films

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Transition Metal Oxide-Based Nanomaterials for High Energy and Power Density Supercapacitor

Cited by 8 publications

References 1 publication

Improved Electrochemical Performance of Aqueous Hybrid Supercapacitors Using CrCo₂O₄ Mesoporous Nanowires: An Innovative Strategy toward Sustainable Energy Devices

Improved Electrochemical Performance of Aqueous Hybrid Supercapacitors Using CrCo₂O₄ Mesoporous Nanowires: An Innovative Strategy toward Sustainable Energy Devices

Annealing optimization of graphitized Co₃O₄@CuO@NiO composite electrodes for supercapacitor applications

Recent Progress in Metal Oxide for Photovoltaic Application

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Transition Metal Oxide-Based Nanomaterials for High Energy and Power Density Supercapacitor

Cited by 8 publications

References 1 publication

Improved Electrochemical Performance of Aqueous Hybrid Supercapacitors Using CrCo2O4 Mesoporous Nanowires: An Innovative Strategy toward Sustainable Energy Devices

Improved Electrochemical Performance of Aqueous Hybrid Supercapacitors Using CrCo2O4 Mesoporous Nanowires: An Innovative Strategy toward Sustainable Energy Devices

Annealing optimization of graphitized Co3O4@CuO@NiO composite electrodes for supercapacitor applications

Recent Progress in Metal Oxide for Photovoltaic Application

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Improved Electrochemical Performance of Aqueous Hybrid Supercapacitors Using CrCo₂O₄ Mesoporous Nanowires: An Innovative Strategy toward Sustainable Energy Devices

Improved Electrochemical Performance of Aqueous Hybrid Supercapacitors Using CrCo₂O₄ Mesoporous Nanowires: An Innovative Strategy toward Sustainable Energy Devices

Annealing optimization of graphitized Co₃O₄@CuO@NiO composite electrodes for supercapacitor applications