Agricultural biomass-based activated carbons for efficient and sustainable supercapacitors

Journal of Energy Storage, Год журнала: 2024, Номер 97, С. 112878 - 112878

Опубликована: Июль 30, 2024

Язык: Английский

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PBA-Derived Ternary FeCoNi Alloy Supported on N-Doped Porous Carbon as a Bifunctional Catalyst for Zn-Air Batteries

Energy & Fuels, Год журнала: 2024, Номер 38(9), С. 8277 - 8284

Опубликована: Апрель 16, 2024

One of the challenges preventing rechargeable Zn-air batteries (ZABs) from being used in larger commercial applications is their slow oxygen evolution reaction (OER) and reduction (ORR). Low-cost transition metal carbon-based materials are generally considered to be most promising replace precious catalysts improve OER ORR performance. However, practical application these hampered by poor activity stability. By optimization preparation technology composition material, catalytic durability catalyst can improved. Herein, through iterative coprecipitation pyrolysis methods, FeCoNi alloy nanoparticles coated with graphitized carbon nanotubes (FeCoNi-N-CS) were constructed on activated carbon. The FeCoNi-N-CS exhibits impressive bifunctional electrocatalytic alkaline media a half-wave potential (E1/2) 871 mV for ORR, an overpotential 334 at current density 10 mA cm–2 (Ej=10) OER. Furthermore, when this applied ZAB, greater specific capacity 791 mAh gZn–1 long-term cycling stability compared commercialized Pt/C + RuO2 achieved.

Язык: Английский

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A Review on Biomass-Derived Activated Carbon for Next-Generation Supercapacitors: Cutting-Edge Advances and Future Prospects

Energy & Fuels, Год журнала: 2025, Номер unknown

Опубликована: Янв. 23, 2025

Язык: Английский

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Activation-self-activation strategy for one-step preparation of Platycladus orientalis leaves based N-O-S self-doping hierarchical porous carbon for high-performance supercapacitor

Industrial Crops and Products, Год журнала: 2025, Номер 225, С. 120584 - 120584

Опубликована: Янв. 29, 2025

Язык: Английский

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Nanoarchitechtonic Marvels: Pioneering One-Pot Synthesis of Bi₂WO₆ Nanostructures for Breakthrough in Symmetric Supercapacitor Innovation

ACS Applied Energy Materials, Год журнала: 2024, Номер 7(13), С. 5490 - 5500

Опубликована: Июнь 13, 2024

A facile ultrasonic-assisted synthesis (UAS) technique was employed to synthesize bare (BWO-Bare) and heat-treated 600 °C Bi2WO6 nanostructures (BWO-600), which serve as an affordable ecofriendly supercapacitor electrode material. Extensive structural, morphological, electrochemical investigations on BWO-600 revealed homogeneous dispersion, exhibiting a remarkable specific capacity of 614 C/g (6 M aqueous KOH electrolyte) in three-electrode configuration 376 when assembled symmetric supercapacitor. exhibited impressive cyclic stability with capacitance retention 84% after 10,000 cycles 6 KOH. According the Dunn Trasatti analytical method, exhibits 82% diffusive contribution 18% capacitive at relatively low scan rate. The demonstrates its effectiveness across diverse applications peak energy density 20.8 Wh/kg power 4.1 kW/kg.

Язык: Английский

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Supercapacitive behaviors of N/S co-doped biomass porous carbon-based supercapacitors in “water-in-salt” electrolyte

Journal of Energy Storage, Год журнала: 2024, Номер 101, С. 113914 - 113914

Опубликована: Сен. 25, 2024

Язык: Английский

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Activated Carbon for Supercapacitor Electrodes Produced by the Carbonation and Activation of Glucose with Potassium Nitrate

ACS Applied Energy Materials, Год журнала: 2024, Номер 7(16), С. 6873 - 6886

Опубликована: Авг. 15, 2024

The preparation of activated carbon has long been a subject interest for researchers aiming to develop straightforward and environmentally friendly method. This study introduces an approach carbonizing glucose using potassium nitrate ignite carbonize glucose, resulting in the production fluffy carbon. Activated suitable supercapacitor can be obtained through postprocessing involving calcination pickling. An important feature this method is that it does not require use strong alkali, such as hydroxide, activation reaction following carbonization. Based on experimental results, optimal produced when proportion feedstock 50%. Furthermore, with superior physical characteristics utilized assembly organic electrolyte supercapacitors, their electrical properties analyzed. results indicate assembled by 50% raw material demonstrates best performance. Its cyclic voltammetry (CV) curve approximates rectangle exhibits almost vertical at low frequencies Nyquist plot. Additionally, analysis galvanostatic charge–discharge behavior supercapacitor, maintains equilateral triangle pattern even current density 5A/g. also show achieves 38.41 153.66 F/g capacitor-specific capacitance electrode-specific capacitance, respectively.

Язык: Английский

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Preparation of nickel oxide nanoparticles/biomass-derived activated carbon composites for high-performance aqueous asymmetric supercapacitor electrode

Surfaces and Interfaces, Год журнала: 2024, Номер unknown, С. 105736 - 105736

Опубликована: Дек. 1, 2024

Язык: Английский

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Biomass-derived activated carbon for high-performance energy storage devices

Journal of Power Sources, Год журнала: 2025, Номер 633, С. 236404 - 236404

Опубликована: Фев. 12, 2025

Язык: Английский

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Adsorption of Aqueous Nickel Ion by Biomass Carboxymethyl Cellulose-Doped Boron Nitride Composites and Its Subsequent Energy Storage

Polymers, Год журнала: 2025, Номер 17(5), С. 567 - 567

Опубликована: Фев. 20, 2025

As a typical heavy metal pollutant discharged from industrial activities, nickel ions are highly bioaccumulative and carcinogenic, low concentrations (>0.5 mg/L) can disrupt the balance of aquatic ecosystems pose threat to human health. In this study, bifunctional adsorbent based on carboxymethyl cellulose/boron nitride hydrogel was prepared for treatment nickel-containing wastewater with high adsorption capacity Ni2+ (800 mg/L, 344 mg/g), after adsorption, waste gel converted into nickel-doped porous carbon material through carbonization used as bilayer capacitor electrode achieve specific capacitance 40.6 F/g at current density 1 A/g. The retention rate >98% 150 cycles. This strategy simultaneously solves problems purification (the method is applicable medium- high-concentration heavy-metal wastewater) environmental pollution caused by adsorbents, provides new paradigm “adsorption-resourcing” closed-loop pollutants.

Язык: Английский

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