Microporus activated carbon fiber felt from Brazilian textile PAN fiber: preparation, characterization and application as super capacitor electrode

Marcuzzo, Jossano Saldanha; Cuña, Andrés; Tancredi, Néstor; Méndez, Eduardo; Bernardi, Heide Heloise

doi:10.17563/rbav.v35i2.1022

Cited by 8 publications

(13 citation statements)

References 16 publications

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“…The ACF'f presents a moderate C s in both electrolytes with a maximum C s value of 163 F•g −1 and 152 F•g −1 obtained at 0.15 A•g −1 in basic and acidic electrolytes, respectively. These values are higher or comparable with some other previously reported C s values for carbon fibre materials [19,35,36], biomass-derived carbon materials [9,10], and other types of carbonaceous materials [3]. However, the determined C s for ACF'f are lower than those reported for several metal oxides [37,38] and conducting polymer-based materials [39,40].…”

Section: Charge-discharge Curvessupporting

confidence: 77%

“…These materials have chemical, electrical, and mechanical properties that make them unique; therefore, the demand for this kind of material is expected to increase in the future. The use of ACF have been extended to multiple processes based on adsorption and catalysis, such as gas separation, wastewater purification, advanced oxidation processes, and supercapacitors [15][16][17][18][19]. Nowadays the CF, as well as ACF, production is based on the use of petroleum derivatives as precursor materials, which implies high-energy demands and a major contribution to the carbon footprint [20,21].…”

Section: Introductionmentioning

confidence: 99%

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Supercapacitor Electrode Based on Activated Carbon Wool Felt

Pina

Amaya

Marcuzzo

et al. 2018

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An electrical double-layer capacitor (EDLC) is based on the physical adsorption/desorption of electrolyte ions onto the surface of electrodes. Due to its high surface area and other properties, such as electrochemical stability and high electrical conductivity, carbon materials are the most widely used materials for EDLC electrodes. In this work, we study an activated carbon felt obtained from sheep wool felt (ACF'f) as a supercapacitor electrode. The ACF'f was characterized by elemental analysis, scanning electron microscopy (SEM), textural analysis, and X-ray photoelectron spectroscopy (XPS). The electrochemical behaviour of the ACF'f was tested in a two-electrode Swagelok ®-type, using acidic and basic aqueous electrolytes. At low current densities, the maximum specific capacitance determined from the charge-discharge curves were 163 F•g −1 and 152 F•g −1 , in acidic and basic electrolytes, respectively. The capacitance retention at higher current densities was better in acidic electrolyte while, for both electrolytes, the voltammogram of the sample presents a typical capacitive behaviour, being in accordance with the electrochemical results.

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Section: Charge-discharge Curvessupporting

confidence: 77%

Section: Introductionmentioning

confidence: 99%

Supercapacitor Electrode Based on Activated Carbon Wool Felt

Pina

Amaya

Marcuzzo

et al. 2018

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“…The activated carbon fiber felt samples were prepared according to previews studies. 25 For the electrode sample preparation, an activated carbon felt (ACF) was immersed in a 2 g L -1 AgNO 3 aqueous solution up to saturating adsorption (24 hours). The sample was washed with deionized water and dried in a vacuum oven at 50ºC, forming an Ag@ACF composite.…”

Section: Methodsmentioning

confidence: 99%

Ag@Activated Carbon Felt Composite as Electrode for Supercapacitors and a Study of Three Different Aqueous Electrolytes

Rodrigues

Silva

Quirino³

et al. 2018

Mat. Res.

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The main challenge for the development of a high efficiency supercapacitor is the electrode material. Developing electrode materials with high specific electrical capacitance and low electrical resistance enables an increase in the energy accumulated in the device. In addition, it is expected that the electrode material presents a simple procedure for preparation having low production cost and being environmentally friendly. This work is based on the deposition of silver nanoparticles on activated carbon felt (Ag@ACF) as a supercapacitor electrode. The samples were characterized by field emission gun scanning electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy and textural analysis. Supercapacitor behavior was evaluated by galvanostatic charge-discharge curves, cyclic voltammetry and electrochemical impedance spectroscopy using a symmetrical two-electrode Swagelok type cell, and three different aqueous solution electrolytes: 2 M H 2 SO 4 , 6 M KOH and 1 M Na 2 SO 4. Ag@ACF presented a high specific capacitance in KOH, about 170 F g-1 , which makes it an interesting material for supercapacitor electrodes and it showed good specific electrical capacitance, low resistance and high cyclability.

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“…The synthesis of activated carbon ber-felt (ACFF) electrodes was based on the methodology proposed in previous works [29,30] and included three fundamental processes: oxidation, carbonization, and physical activation (Fig. 1).…”

Section: Synthesis Of Activated Carbon Ber-felt Electrodes From Texti...mentioning

confidence: 99%

Binder-free textile PAN-based electrodes for aqueous-based and glycerol-based supercapacitors

Barbosa

Marcuzzo

Faria

et al. 2023

Preprint

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Amidst different types of energy storage systems, electric double-layer capacitors (EDLCs), also known as supercapacitors, have received considerable attention as energy storage alternatives due to their advantageous characteristics: high power density, long-life cycle, lightweight, safe operations, and fast charge-discharge rates. This work addresses these EDLC devices and has been divided into two parts. In the former, the synthesis and characterization of activated carbon fiber-felt (ACFF) electrodes from textile PAN fiber have been provided. In the latter, electrochemical characterization of the ACFF electrodes in potassium hydroxide solutions (aqueous-based) and in potassium hydroxide-glycerol hybrid electrolytes (glycerol-based electrolytes) have been investigated. The synthesis of ACFF electrodes via two-step oxidation, carbonization, and physical activation resulted in low-cost and binder-free electrodes containing mostly micropores (maximum pore width of 3 nm) and a specific surface area of 1875 m2 g− 1. Electrochemical impedance spectroscopy, cyclic voltammetry, and galvanostatic charge-discharge techniques were carried out in a symmetric two-electrode setup at room temperature. The results showed that ACFF-based EDLCs in aqueous-based electrolyte (2 M KOH) exhibited low electrolyte resistance (0.44 ± 0.04 Ω cm2) and high gravimetric capacitance (129 ± 6 F g− 1 at 1 mV s − 1). Although ACFF-based EDLCs in glycerol-based electrolytes exhibited high electrolyte resistance (> 17 ± 2 Ω cm2), they are hybrid green-electrolytes that support a large potential window (< 2.5), which is greater than that of aqueous electrolytes (≈ 1 V). Crude glycerol, the main byproduct in biodiesel production, is non-toxic, relatively safe, and low-cost. The advantages and disadvantages of aqueous and glycerol-based electrolytes have been discussed.

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Microporus activated carbon fiber felt from Brazilian textile PAN fiber: preparation, characterization and application as super capacitor electrode

Cited by 8 publications

References 16 publications

Supercapacitor Electrode Based on Activated Carbon Wool Felt

Supercapacitor Electrode Based on Activated Carbon Wool Felt

Ag@Activated Carbon Felt Composite as Electrode for Supercapacitors and a Study of Three Different Aqueous Electrolytes

Binder-free textile PAN-based electrodes for aqueous-based and glycerol-based supercapacitors

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