Sonochemical synthesis of high-performance MgCo2O4 nanostructures as cathode material for the assembly of hybrid supercapacitor

International Journal of Hydrogen Energy, Год журнала: 2025, Номер 103, С. 12 - 22

Опубликована: Янв. 16, 2025

Язык: Английский

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Optimized Fabrication of Supercapacitor Using MOF-Derived NiCo₂O₄ with Porous Carbon as Cathode: Electrochemical Characterization and Stability Analysis using Time Series Analysis Technique

ACS Applied Electronic Materials, Год журнала: 2024, Номер 6(6), С. 4369 - 4380

Опубликована: Июнь 5, 2024

This study utilizes metal–organic framework (MOF)-derived NiCo2O4 with porous carbon (PC) as the cathode to fabricate both symmetric and asymmetric supercapacitor devices an optimized anode (NiCo2O4/PC, activated (AC), polyaniline (PANI)) aqueous electrolytes. Initially, NiCo2O4/PC material was synthesized from a bimetallic–organic (NiCo-BTC MOF) using carefully thermal conditions. Following comprehensive characterizations, employed in fabrication of solid-state by meticulously selecting electrode–electrolyte pair maximize performance. To achieve this, electrochemical characterizations NiCo2O4/PC/NF (NF: Ni foam) were carried out various The 1.0 M potassium hydroxide (KOH) electrolyte demonstrated most promising performance for composite. Subsequently, KOH-based gel evaluate three devices. These included two devices, NiCo2O4/PC/NF–AC/NF NiCo2O4/PC/NF–PANI/NF, well one device, NiCo2O4/PC/NF–NiCo2O4/PC/NF. Notably, NiCo2O4/PC/NF–PANI/NF device exhibited energy density almost 3.23 3.78 times higher than those NiCo2O4/PC/NF-NiCo2O4/PC/NF respectively. long-term stability system, analyzed over 2000 charge–discharge cycles time series analysis, reveals insights into its behavior extended duration. illustrated efficacy PANI (instead AC) MOF-derived material. Furthermore, aforementioned high-performing integrated power LED, demonstrating practical applicability.

Язык: Английский

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Controlling the conductivity and microporosity of biocarbon to produce supercapacitors with battery-level energies at an ultrahigh power

New Carbon Materials, Год журнала: 2025, Номер 40(2), С. 397 - 407

Опубликована: Апрель 1, 2025

Язык: Английский

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Multifunctional, Novel Zinc-Pyrrole Polymeric MOF as Free Standing, Binder Free Supercapacitor Electrode and Photocatalyst for Organic Pollutant Degradation

ACS Sustainable Resource Management, Год журнала: 2024, Номер 1(11), С. 2420 - 2427

Опубликована: Окт. 23, 2024

We developed a novel metal-organic framework (MOF) that incorporates polymeric chain comprising transition metal and conducting polymer. It differs from traditional MOFs rely on rigid organic linkers. Zinc ion was trapped between two pyrrole rings to form stable complex, which polymerized, resulting in chain-based MOF (ZP-MOF); the polymer served as ligand. Because of its innovative structure, ZP-MOF functioned freestanding, binder-free electrode exhibited remarkable specific capacitance 232.44 F g–1 at current density 1 A g–1, energy 26 Wh kg–1, power 1807 W kg–1. The delivered outstanding electrochemical performance demonstrated exceptional cyclic stability, retaining 84% initial after over 5000 charge-discharge cycles 10 g–1. also showed excellent potential environmental applications such degrading dyes, 50 mg it removed 98.52% methylene blue dye an aqueous solution (50 mL) within 40 min, even high concentrations mg/L. These findings highlight dual functionality as-developed efficient storage material promising agent for wastewater treatment, underscoring diverse practical setting new standards design.

Язык: Английский

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Boosting Ion Storage and Desolvation Kinetics in Biomass-Derived Nanoporous Carbon for Advanced Supercapacitor Energy Storage

Опубликована: Янв. 1, 2024

Язык: Английский

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