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 9 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 fibers that go through the activation process have part of their amorphous structure removed, leading to the appearance of pores, a characteristic that facilitates the communication of the material with the environment where it will be implanted. 3,5…”

Section: Characterization Of Carbon Fibermentioning

confidence: 99%

Carbon fiber: Characterization and evaluation of the inflammatory response and toxicity in rats

et al. 2023

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This study aimed to evaluate the Carbon Fiber obtained from PAN textile and cotton fiber in their different forms of presentation: non‐activated carbon fiber felt (NACFF), activated carbon fiber felt (ACFF), silver activated carbon fiber felt (Ag‐ACFF), and activated carbon fiber tissue (ACFT), to obtain scaffolds as a potential material with properties related to the synthetic bone graft. Characterization tests performed: surface wettability, traction, swelling, and in vivo tests: evaluation of the inflammatory response by implanting the materials in the subcutaneous tissue of 14 Wistar rats, evaluation of collagen fibers by picrosirius red staining and assessment of toxicity in the following organs: heart, spleen, liver, and kidney. In the wettability test, NACFF and ACFT were hydrophobic (θ124° and 114°), ACFF and Ag‐ACFF were hydrophilic. For maximum stress, ACFF was more resistant (2.983 ± 1.059) p < .05. In the swelling test, the Ag‐ACFF and ACFF groups showed the highest absorption percentage for the PBS solution and distilled water (p < .001). The organs showed no signs of acute systemic toxicity. The implant regions showed mild to moderate inflammatory infiltrate at 7 and 21 days. Only the ACFT group did not show the maturation of type I collagen fibers in 21 days. Through the conducted analyses, the ACFT shows little potential to be indicated as a possible scaffold. Therefore NACFF, ACFF, and Ag‐ACFF have the potential to be considered scaffolds due to the following characteristics presented: good absorption rate, hydrophilicity, and non‐toxic.

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

Cited by 9 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

Carbon fiber: Characterization and evaluation of the inflammatory response and toxicity in rats

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