Regulating the Oxygen Vacancy and Electronic Structure of NiCo Layered Double Hydroxides by Molybdenum Doping for High‐Power Hybrid Supercapacitors

Small, Год журнала: 2023, Номер 20(8)

Опубликована: Окт. 12, 2023

Abstract Amelioration of nickel‐cobalt layered double hydroxides (NiCo‐LDH) with a high specific theoretical capacitance is great desire for high‐power supercapacitors. Herein, molybdenum (Mo) doping strategy proposed to improve the charge‐storage performance NiCo‐LDH nanosheets growing on carbon cloth (CC) via rapid microwave process. The regulation electronic structure and oxygen vacancy LDH consolidated by density functional theory (DFT) calculation, which demonstrates that Mo narrows band gap, reduces formation energy hydroxyl vacancies, promotes ionic charge transfer as well electrolyte adsorption electrode surface. optimal Mo‐doped (MoNiCo‐LDH‐0.05/CC) has an amazing capacity 471.1 mA h g −1 at 1 A , excellent retention 84.8% 32 far superior NiCo‐LDH/CC (258.3 76.4%). constructed hybrid supercapacitor delivers 103.3 W kg power 750 retains cycle 85.2% after 5000 cycles. Two assembled devices in series can drive thirty LED lamps, revealing potential application prospect rationally synthesized MoNiCo‐LDH/CC energy‐storage material.

Язык: Английский

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Performance and mechanism of efficient activation of peroxymonosulfate by Co-Mn-ZIF derived layered double hydroxide for the degradation of enrofloxacin

Journal of Molecular Liquids, Год журнала: 2023, Номер 394, С. 123723 - 123723

Опубликована: Дек. 3, 2023

Язык: Английский

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Zn doping induced local lattice expansion for hierarchical hollow NiCo-LDH toward enhanced electrochemical performance in asymmetric supercapacitors

Journal of Energy Storage, Год журнала: 2024, Номер 92, С. 112195 - 112195

Опубликована: Май 25, 2024

Язык: Английский

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Recent advances in Ni-materials/carbon nanocomposites for supercapacitor electrodes

Materials Advances, Год журнала: 2023, Номер 4(23), С. 6152 - 6174

Опубликована: Янв. 1, 2023

Comparison of power density as a function energy for supercapacitors based on Ni-materials/carbon nanocomposites and keyword analysis Ni material-based using VOSviewer.

Язык: Английский

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Modulating electronic and interface structure of CuO/CoNi-LDH via electrochemical activation for high areal-performance supercapacitors

Journal of Energy Storage, Год журнала: 2024, Номер 83, С. 110426 - 110426

Опубликована: Янв. 26, 2024

Язык: Английский

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Construction of defective MnCo-LDH nanoflowers with high activity for overall water splitting

Fuel, Год журнала: 2024, Номер 364, С. 130961 - 130961

Опубликована: Фев. 7, 2024

Язык: Английский

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Growth of Succulent Shaped Fluorine Incorporated Ni─Co LDH (F‐NiCo(OH)₂): Elevating Supercapacitor Efficiency

Small, Год журнала: 2025, Номер unknown

Опубликована: Март 19, 2025

Abstract The unparalleled morphological tuning of layered double hydroxides (LDHs), specifically NiCo(OH) 2 , through fluorine doping, is systematically investigated. unique achieved by precisely modulating the dopant concentration using a straightforward solvothermal approach. Field Emission Scanning Electron Microscopy (FESEM) results show distinct succulent‐like morphologies in samples, influencing surface area and electrochemical performance. Electrochemical studies fabricated asymmetric supercapacitor consisting 2F‐NiCo(OH) |Activated Carbon(AC) electrodes exhibit very high charge storage capacity as 402 C g −1 . Further, X‐ray photoelectron spectroscopy analysis confirms incorporation chemisorption within LDH layers, thereby corroborating its presence electronic environment enhancing device shows an exceptionally energy density, 67 Wh kg with power density 10.6 kW while retaining 95% specific after 13 000 cycles at 10 mA cm −2 current density. practical applicability developed demonstrated successfully powering LED calculator, underscoring potential for real‐world solutions.

Язык: Английский

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Robust self-standing multiscale engineered Ni(OH)2 film for flexible high-capacity supercapacitor

Journal of Power Sources, Год журнала: 2025, Номер 641, С. 236892 - 236892

Опубликована: Март 28, 2025

Язык: Английский

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Hierarchical and core-shell structured CuCo2O4@NiMn-LDH composites as supercapacitor electrode materials with high specific capacitance

Journal of Energy Storage, Год журнала: 2023, Номер 67, С. 107327 - 107327

Опубликована: Май 1, 2023

Язык: Английский

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Bimetallic Co3V2O8 microstructure: A versatile bifunctional electrode for supercapacitor and electrocatalysis applications

Surfaces and Interfaces, Год журнала: 2023, Номер 41, С. 103267 - 103267

Опубликована: Авг. 9, 2023

Язык: Английский

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