α‐Fe₂O₃ Nanocubes as High‐Performance Anode for Supercapacitor

Advanced Sustainable Systems, Год журнала: 2025, Номер unknown

Опубликована: Янв. 5, 2025

Abstract The ability to store charge through both Faradaic and non‐Faradaic mechanisms in transition metal oxide‐based nanomaterials have made them a popular choice for use as electrode materials energy storage devices. Of these nanostructured iron oxides, especially Fe 2 O 3, forms one of the most preferred choices material supercapacitor anode due low cost, non‐toxicity, high abundance availability variable oxidation states. In this study, synthesis 3 nanocubes is presented via hydrothermal method using mixed solvent system. annealed α‐Fe show superior specific capacitance 908 F g −1 compared 796 prepared samples at current density 2A , capacity can be ascribed exposure active sites storage, transfer resistance (Rct) reversible electrochemical reactions involving 2+ /Fe 3+ ions. Further, assembled two‐electrode asymmetric device //NiO shows 25.31Wh Kg power 759.3 W with retention 70% after 1000 cycles. These findings underscore viability promising development next‐generation supercapacitors, profound implications advancement sustainable solutions.

Язык: Английский

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Comparative Study of Electrochemical Supercapacitor Performance Among Various Nickel Phases: Hydroxide, Oxide, and Sulfide

Ceramics International, Год журнала: 2025, Номер unknown

Опубликована: Фев. 1, 2025

Язык: Английский

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New insights into the performance of biomass carbon-based supercapacitors based on interpretable machine learning approach

Journal of Energy Storage, Год журнала: 2025, Номер 118, С. 116300 - 116300

Опубликована: Март 20, 2025

Язык: Английский

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Mg-substituted Cu-Zn spinel ferrites as electrode materials for supercapacitor applications

Inorganic Chemistry Communications, Год журнала: 2025, Номер unknown, С. 114393 - 114393

Опубликована: Март 1, 2025

Язык: Английский

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Synthesis of NiCo2S4 nanosheets coated on biomass activated carbon for high-performance asymmetric supercapacitors

Journal of Power Sources, Год журнала: 2025, Номер 642, С. 236995 - 236995

Опубликована: Апрель 11, 2025

Язык: Английский

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Sargassum/Chitin-Derived Nitrogen-Doped Activated Carbon with Exceptional Electrochemical Performance for Supercapacitors

International Journal of Electrochemical Science, Год журнала: 2025, Номер unknown, С. 101024 - 101024

Опубликована: Апрель 1, 2025

Язык: Английский

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Construction of a Ni2P/NiSe2/MoSe2 hybrid for advanced supercapacitors

Journal of Alloys and Compounds, Год журнала: 2024, Номер 1010, С. 178074 - 178074

Опубликована: Дек. 12, 2024

Язык: Английский

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Unveiling a paradigm shift in supercapacitor dynamics: γ-Al2O3-infused ZnO nanorods with redox-active K4Fe(CN)6 alkaline electrolytes

Journal of Alloys and Compounds, Год журнала: 2024, Номер unknown, С. 177892 - 177892

Опубликована: Ноя. 1, 2024

Язык: Английский

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Comparative Analysis of Structural, Optical, and Electronic Properties of Nickel Oxide and Potassium‐Doped Nickel Oxide Nanocrystals

Energy Storage, Год журнала: 2024, Номер 6(8)

Опубликована: Ноя. 3, 2024

ABSTRACT Metal oxide semiconductors, known for their exceptional optical transparency, high carrier mobility, and stability, have found extensive use in emerging technologies such as optoelectronics energy storage devices. Among all metal nickel (NiO) stands out a highly favorable candidate due to its p‐type conductivity along with substantial band gap (3.5–4 eV) the broad range of applications, including gas sensors, high‐rate Lithium‐ion batteries, high‐performance supercapacitors, photovoltaic In light these versatile our current study presents comprehensive comparative analysis structural optoelectronic properties NiO potassium (K)‐doped nanocrystals. The nanocrystals were synthesized using co‐precipitation route subsequently annealed at 500°C under ambient conditions. effect K doping on characteristics was systematically examined various techniques, x‐ray diffraction, UV–visible spectroscopy, Raman Hall measurements. To explore characteristics, XRD measurements performed, which confirm FCC structure property suggested that formation level can contribute reduction gap. A sharp peak 397 cm −1 is associated NiO bond FTIR spectra verifies Moreover, incorporation increases intensity peaks, provides evidence higher degree crystallinity doped samples. These results scattering are good agreement outcomes. addition, resistivity decreases monotonically increasing concentration. temperature‐dependent further demonstrate electrons required more jump from one polaron state another case x = 0.01 M 0.03 Ni 0.5‐ O combination diminished enhanced makes materials exceptionally promising applications storage.

Язык: Английский

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Synthesis‐Driven Enhancement in Energy Storage Performance of Copper Transition Metal Phosphates for Hybrid Battery‐Supercapacitor Systems

Energy Technology, Год журнала: 2024, Номер unknown

Опубликована: Дек. 10, 2024

The tremendous advancements in science and technology have resulted the invention of electronic devices that require greater energy storage capabilities. Hybrid supercapacitors (SCs) gain promising interest due to their exceptional electrochemical performance similar batteries (high‐energy density) SCs (high‐power density). excellent electrode material is significantly influenced by employed synthesis route. copper phosphate (Cu 3 (PO 4 ) 2 nanomaterials are synthesized using hydrothermal sonochemical techniques. Two‐ three‐electrode configurations utilized evaluate as‐prepared nanomaterials. An incredible specific capacity 443.86 C g −1 at 1.4 A achieved through sonochemically obtained nanomaterial (S2). In two‐electrode configuration, S2 used as a positive fabricate an asymmetric device, which provides density 51.2 Wh kg power 6800 W 0.9 8.0 , respectively. device also demonstrates retention 93.45% after 1000 galvanostatic charge–discharge cycles 5 . Overall, outcomes suggest method most effective approach for preparation next‐generation applications.

Язык: Английский

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