Production and Characterization of Activated Carbon Fiber from Textile PAN Fiber

Amaral, Miguel Angelo do; Matsushima, Jorge Tadao; Rezende, Mirabel Cerqueira; Gonçalves, Emerson Sarmento; Marcuzzo, Jossano Saldanha; Baldan, Maurício Ribeiro

doi:10.5028/jatm.v9i4.831

Cited by 54 publications

(17 citation statements)

References 4 publications

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“…The peaks at 398.2 and 400.6 eV for N 1s in Figure g are assigned to pyridinic N and pyrrolic N, indicating nitrogen doping. , Three Lorentzian peaks at 284.6, 285.7, and 289.2 eV observed in the XPS spectrum of the C 1s (Figure h) core can be attributed to sp 2 C–sp 2 C, N–sp 2 C, and CO bonds, respectively. The small CO peak would be due to the capture of O during the oxidative cross-linking process Figure i,j displays the nitrogen physisorption isotherms for adsorption and desorption and the corresponding pore-size distribution of PIC-CNTs-MnO 2 by applying the Barrett–Joyner–Halenda (BJH) model.…”

Section: Resultsmentioning

confidence: 99%

High Mass Loading Asymmetric Micro-supercapacitors with Ultrahigh Areal Energy and Power Density

Zhu

Bandari

et al. 2021

ACS Appl. Mater. Interfaces

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High mass loading asymmetric micro-supercapacitors (MSCs) are key components for the development of high-performance energy and power supply systems. Here, a concept for achieving high mass loading electrodes is presented and applied to high mass loading micro-supercapacitors with ultrahigh areal energy and power density. The positive electrode is made from porous carbon with birnessite coverage and multiwalled carbon nanotubes (CNTs) as conducting additives (PIC-CNTs-MnO 2 ). The negative electrode is prepared from hierarchically porous active carbon mixed with CNTs (PICK-CNTs). Both positive and negative electrode materials are tailored to ensure a high content of macro-and mesopores. MSCs with an optimized mass loading of 13.9 mg•cm −2 (maximum: 23.6 mg•cm −2 ) provide an ultrahigh areal capacitance of 1.13 F•cm −2 (volumetric capacitance: 22.6 F•cm −3 ), an outstanding energy of 627.8 μWh•cm −2 , and a maximum power density of 64 mW•cm −2 . About 85% of the initial capacitance remained after 5000 cycles. Moreover, shunt and tandem device testing confirmed a high uniformity of these MSCs, meeting the requirements of adjustable output currents and voltages in microchips.

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Section: Resultsmentioning

confidence: 99%

High Mass Loading Asymmetric Micro-supercapacitors with Ultrahigh Areal Energy and Power Density

Zhu

Bandari

et al. 2021

ACS Appl. Mater. Interfaces

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“…This observation confirms the formation of activated carbon from date stones. It is also well-known that graphitic materials have a large number of peaks in Raman spectra, and hence a number of small peaks between 0 and 1000 cm −1 is no surprise [9]. It can be inferred from these observations that activated carbon has been successfully synthesized and its structure remains intact irrespective of the change in calcination temperature.…”

Section: Spectroscopic Analysesmentioning

confidence: 94%

“…Studies have also investigated various procedures for synthesizing these materials and their effects. The effects of chemical activation, physical activation, impregnation ratio, temperature, and activating agents have all been the subject of recent studies [7,9,10]. Detailed and varying analysis of the morphology and porosity of activated carbon synthesized from various biowaste sources has confirmed that the type of raw material and conditions of synthesis can greatly impact the key performance properties of activated carbon [7,11,12].…”

Section: Introductionmentioning

confidence: 99%

Effect of Pyrolysis Temperature during Valorization of Date Stones on Physiochemical Properties of Activated Carbon and Its Catalytic Activity for the Oxidation of Cycloalkenes

Alshammari

Abbas

2021

Catalysts

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This study presents findings on the chemical synthesis of activated carbon from Saudi dates and its structural, chemical, and catalytic properties. Dates are among the top biowaste materials in the Kingdom of Saudi Arabia, and efforts are underway to utilize this resource. A chemical pyrolysis method was used to synthesize activated carbon from date stones. Synthesized activated carbon was calcined at different temperatures of 400, 500, 600, and 700 °C, and the impact of calcination temperature on the properties of activated carbon was investigated. For this purpose, contemporary characterization tools, namely, XRD, Raman spectroscopy, FTIR, SEM, TEM, TGA, DSC, and XPS, were employed. Results are discussed and compared with associated studies. Finally, the catalytic activity of gold-deposited activated carbon for the oxidation of cycloalkenes was evaluated, and it was found that the calcination temperature has a linear positive relationship with the catalytic activity.

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“…The CNC and CCC felt were subjected to Raman scattering spectroscopy analysis, for a better understanding of the material's graphitic structure. Due to the sensitivity of the laser used (514 cm -1 ) to different carbon structures, it is possible to identify a carbonaceous material [21].…”

Section: Raman Analysismentioning

confidence: 99%

Process of converting human hair into hollow carbon filament for electrochemical capacitor

et al. 2021

Self Cite

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Carbon material is the largest material used as electrode on advanced energy storage devices. The modern lifestyle requires more energy, consequently, more smart energy use and efficient devices are needed. The constant evolution of materials technologies looking for green material and renewable raw material, that have minimal impact on the environment, is one of the most important subjects studied in recent years. The scientific and industry community are paying more attention to new forms of carbon such as nanotubes, graphene, and activated carbon fiber. The purpose of this work is to convert human hair into a hollow carbon filament to be used as a supercapacitor electrode. The human hair needs 3 stages to be converted into carbon filament: textile manufacture, oxidation, and carbonization. The electrochemical behavior was analyzed in a threeelectrode electrochemical cell system with 2 M of H 2 SO 4 electrolyte medium. The behavior of the electrode was characterized electrochemically by galvanostatic charge/discharge curves, cyclic voltammetry, and electrochemical impedance spectroscopy, showing 163 F g -1 of a maximum value of specific capacitance.

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Production and Characterization of Activated Carbon Fiber from Textile PAN Fiber

Cited by 54 publications

References 4 publications

High Mass Loading Asymmetric Micro-supercapacitors with Ultrahigh Areal Energy and Power Density

High Mass Loading Asymmetric Micro-supercapacitors with Ultrahigh Areal Energy and Power Density

Effect of Pyrolysis Temperature during Valorization of Date Stones on Physiochemical Properties of Activated Carbon and Its Catalytic Activity for the Oxidation of Cycloalkenes

Process of converting human hair into hollow carbon filament for electrochemical capacitor

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