Electrochemical efficacies of coal derived nanocarbons

Thomas, Riya; Balachandran, Manoj

doi:10.1007/s40789-020-00379-0

Cited by 11 publications

(7 citation statements)

References 69 publications

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“…The exploration of synthesizing soft and environmentally friendly carbon materials, such as nanocarbon derived from coal and coke, stands as a promising research avenue. This is attributed to its potential to yield high-quality materials at a low cost, along with advantages like environmental friendliness, mild processing conditions, and scalability [12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Porous Carbon Nanomaterials from Vietnamese Coal: Fabrication and Energy Storage Investigations

Do,

Nguyen,

Nguyen

et al. 2024

Applied Sciences

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The choice of precursor and simple synthesis techniques have decisive roles in the viable production and commercialization of carbon products. The intense demand for developing high-purity carbon nanomaterials through inexpensive techniques has promoted the usage of fossil derivatives as a feasible source of carbon. In this study, Vietnamese-coal-derived porous carbon (PC) was used to fabricate coal-derived porous carbon nanomaterials (CDPCs) using the modified Hummers method. The resulting porous carbon nanomaterials achieved a nanoscale structure with an average pore size ranging from 3 to 10 nm. The findings indicate that CDPC exhibits well-developed micropores and mesopores. The presence of macropores and mesopores not only facilitates the complete immersion of the material in the electrolyte but also effectively shortens the ion diffusion pathways. CDPC boasts a high carbon content, constituting 80.88% by weight. Electrochemical impedance spectroscopy (EIS) Nyquist plot of electrodes made from CDPC showed good conductivity value with low charge-transfer resistance. This electrode worked well and stably with capacitance retention of 74.7% after 1000 cycles. The CDPC specific capacitance reached 236 F/g under a current density of 0.1 A using the constant current discharge method and then decreased as the current density increased. Based on the results of the electrochemical properties of the materials, the energy storage capacity of the CDPC material was good and stable. This investigation presents an eco-friendly methodology for the judicious utilization of coal in energy storage applications, specifically as electrodes for supercapacitors and anodes for Li-ion batteries.

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Section: Introductionmentioning

confidence: 99%

Synthesis of Porous Carbon Nanomaterials from Vietnamese Coal: Fabrication and Energy Storage Investigations

Do,

Nguyen,

Nguyen

et al. 2024

Applied Sciences

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“…Coal is a widely used fossil-based energy source due to its extensive availability and affordability . However, coal combustion causes environmental pollution due to the emission of hazardous gases like sulfur dioxide, nitrogen dioxide, carbon dioxide, and volatile organic compounds . So, opening new and alternative coal utilization is well appreciated worldwide.…”

Section: Introductionmentioning

confidence: 99%

Blowing Agent-Induced Hierarchical Porous Carbon from Low-Quality Coal for High-Performance Supercapacitor

Benoy

Bhattacharjya

Bora

et al. 2022

ACS Appl. Electron. Mater.

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The rising demands for sustainability in the environment and energy lead to the design and development of energy storage devices with high energy and power density and hence the potential electrode materials. Tremendous interest has been shown in the sustainable and economical synthesis of porous carbon with high surface area. Hence, in this study, a series of hierarchical porous carbons were proficiently synthesized from Northeastern Indian low-quality subbituminous coal feedstock using NH 4 Cl as a blowing agent and KOH as pore inducing activation agent with hierarchical pores and high-surface area (1996 m 2 /g). The structural and physicochemical properties of the hierarchical porous carbon (HCK3) synthesized by blowing agent-induced activation exhibit significant specific capacitance of 190, 107, and 56 F/g in aqueous, organic, and ionic electrolytes, respectively. Furthermore, the maximum energy density and power density of HCK3-based symmetric supercapacitor are 22.4 Wh/kg and 17 kW/kg, respectively, demonstrating promising supercapacitor application prospects.

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“…15 Coal consisting of graphitic crystallites in its internal structure makes an ideal source for deriving novel nanocarbon as the reserves are cheap and abundant. 16,17 Sub-bituminous coal with a low degree of coalification facilitates the ease of exfoliation of carbon nanoparticles comprising broad application prospects. This aids in the preparation of superior polymer composite and scales up the production at a lower cost.…”

Section: Introductionmentioning

confidence: 99%

Quantifying the role of nanocarbon fillers on dielectric properties of poly(vinylidene fluoride) matrix

Chougule

Twinkle

Thomas

et al. 2022

Polymers and Polymer Composites

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Development of polymers with excellent dielectric properties is a challenge for advanced electronic devices. Impregnating conducting fillers like carbon nanoparticles can enhance the dielectric constant, retaining low loss due to its compatibility and favorable polarization within the polymer matrix. The multifunctional characteristics of coal-derived nanocarbon can improve permittivity and facilitate large-scale production at a lower cost. The incorporation of coal-based nanocarbon in the polymer matrix and its dielectric response is seldom investigated. In this work, different ratios (10:90, 50:50, 90:10 by weight) of nanocarbon/PVDF composite are prepared via a simple solution casting technique. The dielectric measurements show that nanofillers’ addition significantly augments the dielectric constant value, which is ∼3 times (50:50 composite) higher than pure PVDF. The uniform distribution of 50% filler within the polymer matrix impeded the seepage of charge at the interface and enhanced the permittivity via polarization of accumulated charges. The composite also exhibited balanced dielectric loss that is essential for energy storage applications.

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Electrochemical efficacies of coal derived nanocarbons

Cited by 11 publications

References 69 publications

Synthesis of Porous Carbon Nanomaterials from Vietnamese Coal: Fabrication and Energy Storage Investigations

Synthesis of Porous Carbon Nanomaterials from Vietnamese Coal: Fabrication and Energy Storage Investigations

Blowing Agent-Induced Hierarchical Porous Carbon from Low-Quality Coal for High-Performance Supercapacitor

Quantifying the role of nanocarbon fillers on dielectric properties of poly(vinylidene fluoride) matrix

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