Dielectric parameters of activated carbon derived from rosewood and corncob

Xie, Xiubo; Wu, Dan; Wu, Haitao; Hou, Chuanxin; Sun, Xueqin; Zhang, Yuping; Yu, Ronghai; Zhang, Shangzhou; Wang, Bing; Du, Wei

doi:10.1007/s10854-020-04358-8

Cited by 15 publications

(10 citation statements)

References 34 publications

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“…The TEM image in Figure 5b showed nanosheet structures distributed across the porous structure, and the inset selected area diffraction (SAED) suggested that ACH has an amorphous structure. The XRD pattern of the as-received ACH in Figure 5c showed two broad peaks at around 23 • and 43 • , which corresponded to the (002) and (100) planes of amorphous carbon, which were similar to those in previously reported activated carbons derived from human hair [38] and any other activated carbons [43].…”

Section: Microstructural Characterizationsupporting

confidence: 84%

Eco-Friendly Triboelectric Material Based on Natural Rubber and Activated Carbon from Human Hair

et al. 2022

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The triboelectric nanogenerator (TENG) has emerged as a novel energy technology that converts mechanical energy from surrounding environments to electricity. The TENG fabricated from environmentally friendly materials would encourage the development of next-generation energy technologies that are green and sustainable. In the present work, a green triboelectric material has been fabricated from natural rubber (NR) filled with activated carbon (AC) derived from human hair. It is found that the TENG fabricated from an NR-AC composite as a tribopositive material and a poly-tetrafluoroethylene (PTFE) sheet as a tribonegative one generates the highest peak-to-peak output voltage of 89.6 V, highest peak-to-peak output current of 6.9 µA, and can deliver the maximum power density of 242 mW/m2. The finding of this work presents a potential solution for the development of a green and sustainable energy source.

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Section: Microstructural Characterizationsupporting

confidence: 84%

Eco-Friendly Triboelectric Material Based on Natural Rubber and Activated Carbon from Human Hair

et al. 2022

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“…The AC samples exhibited irregular sheets with apparent porosities. This implies that the morphology could be from the volatile organics and swell expansion, as Xie et al [10] and Wang et al [5] reported. The three-carbon samples exhibited rough surfaces with excellent porosity creating a perfect interface for diffusion and intercalation of the electrolytic ions during the charge-discharge process of the EDLC electrodes.…”

Section: Morphology and Structural Characterizationmentioning

confidence: 83%

“…The N 2 adsorption-desorption isotherm was performed to calculate the pore volume and speci c surface area, as shown in Table 4 for the three samples. The isotherms of the samples show type I isotherm with micropores, and the hysteresis loop is mainly caused by the mesoporous structure [10]. The hysteresis loop at a relative pressure from 0.4 to 0.9 P/Po in the adsorption-desorption isotherms mainly because of the presence of mesopores with the formation of interparticle condensation of N 2 at > 0.9P/Po.…”

Section: Morphology and Structural Characterizationmentioning

confidence: 88%

“…Other materials, which include African maize corn cob with SSA of 254 m 2 /g and a speci c capacitance of 456 F/g at a speci c current of 0.25 A/g [1], waste tea with SSA of 294.6 m 2 /g exhibited a speci c capacitance of 199 F/g at the speci c current of 0.5A/g, the SSA range of 1308 m 2 /g gave a speci c capacitance of 140 F/g at a current density of 0.1A/g from Waste tea [9]. Rosewood and corn cob [10], banana peels [11], corn husk with SSA of 1370 m 2 /g, and a speci c capacitance of 127 F/g at 1 A/g [8] were reported. Pinecones with SSA of 1169.31 m 2 /g show a speci c capacitance of 43 F/g at 0.5 A/g [4], coconut shell exhibited SSA of 11614 m 2 /g resulted in a high capacitance of 426 F/g at 0.5 A/g with electronic conductivity of 11.43 S/cm [12].…”

Section: Introductionmentioning

confidence: 99%

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Cobs Porous Carbon-Based Materials With High Energy And Excellent Cycle Stability For Supercapacitor Applications

Kigozi

Koech

Orisekeh

et al. 2021

Preprint

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Background and purpose: For application in supercapacitors, improving the efficiency of the electrode materials is the most important for obtaining high performance. Porous carbon with suitable architectures is reliable for improved electrochemical capacitors. In this study, we optimized the maize cobs as a potential abundant precursor for the production of porous carbon supercapacitor applications. This research study aimed to advance on the activation method for Activation of the biomass and to up-cycling agricultural biomass into carbon-based porous materials for supercapacitor electrode application. The carbonized samples were kept in a desiccator for 3 hours to allow intercalation and interaction of the carbon lattice expansion by K+ ion before Activation [Topic, RQ]. Results: The physical and chemical characterization of the synthesized materials was carried out several techniques for determining different properties of the activated carbon from maize cobs, including; structural-functional groups, morphology, chemical composition, physical properties and electrochemical performance. The results revealed surface structure with oxygen-based functional groups carried by XPS and FTIR, the amorphous nature by XRD, high-temperature stability to degradation by TGA/DSC, among others. Also, the structural characterization revealed a BET specific surface area of 1443.94 m2/g with a pore volume of 0.7915cm3/g. Symmetric devices based on the produced materials delivered a specific capacitance of 358.7F/g with an energy density of 12.45 Wh/kg and a corresponding power density of 250 W/kg at 0.5A/g [Outcome]. Conclusions: The as-prepared electrodes exhibited excellent stability with the capacitance retention of 99% at the maximum potential for a repeated 10hr to a total of 130 h. The industries can commercialise these activated carbon materials for application in energy storage systems and water purification due to their porosity and high-temperature resistance to degradation [Contributions].

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“…Those diffractograms are characterized by a major Bragg peak at 21.0°and a weak reflex at 43.0°, which are related to crystal planes (002) and intralayer scattering (100) of graphite. [67,68] An important parameter for materials with a graphite-like structures is the interlayer distance along the (002) direction: d (002) . This parameter is essential because the presence of nitrogen atoms, and consequently a more disordered graphitic structure, leads to higher values of d (002) compared to that of graphite 3.335 Å.…”

Section: Device Based Onmentioning

confidence: 99%

Assessing the Effect of Stabilization and Carbonization Temperatures on Electrochemical Performance of Electrospun Carbon Nanofibers from Polyacrylonitrile

Boll,

Crisci,

Merola

et al. 2023

Adv Energy and Sustain Res

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Supercapacitors (SCs) are considered a promising alternative to batteries to power up portable and wearable devices. Among different categories of materials for SCs, carbon nanofibers (CNFs) are particularly appealing for their electrochemical, morphological, and mechanical properties, coupled with the ease of synthesis. Electrospinning is a simple and low‐cost technique to prepare the polymer‐based precursors for CNFs, allowing to obtain fibers with a tunable morphology and a diameter in the nanometer range. However, even if electrospun CNFs were intensely studied over the years, in the literature there is a lack of information regarding the optimization of the thermal treatment to prepare bare CNFs with high specific capacitance (C s). Herein, a systematic study on the optimization of the stabilization and carbonization temperatures for electrospun CNFs prepared from polyacrylonirtile is reported, achieving a maximum C s of 49 F g−1 at 0.5 A g−1 in a symmetrical SC device based on 1 m H2SO4 electrolyte. Aspects related to the specific surface area, nitrogen doping, and carbon microstructure are examined concerning the different thermal treatments, allowing to define structure–property–function relationships in these capacitive nanoarchitectures.

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Dielectric parameters of activated carbon derived from rosewood and corncob

Cited by 15 publications

References 34 publications

Eco-Friendly Triboelectric Material Based on Natural Rubber and Activated Carbon from Human Hair

Eco-Friendly Triboelectric Material Based on Natural Rubber and Activated Carbon from Human Hair

Cobs Porous Carbon-Based Materials With High Energy And Excellent Cycle Stability For Supercapacitor Applications

Assessing the Effect of Stabilization and Carbonization Temperatures on Electrochemical Performance of Electrospun Carbon Nanofibers from Polyacrylonitrile

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