Mesoporous onion-like carbon nanostructures from natural oil for high-performance supercapacitor and electrochemical sensing applications: Insights into the post-synthesis sonochemical treatment on the electrochemical performance

Ramya, Athiyanam Venkatesan; Thomas, Riya; Balachandran, Manoj

doi:10.1016/j.ultsonch.2021.105767

Cited by 26 publications

(6 citation statements)

References 57 publications

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“…The peak located at ~104 eV came from the SiO/SiOC, while the peak at ~101 eV was from SiC bond 34,35 . The C 1s of both Hemp and SiHemp had three sub peaks at ~283, 284, and 285 eV, shown in Figure 2C,D, which stood for the CC, COH, and CO bonds, respectively 36 . However, the covered area percentage of the COH decreased from 13% to 3% after the modification, implying that majority of the hydroxyl groups were reacted.…”

Section: Resultsmentioning

confidence: 97%

“…34,35 The C 1s of both Hemp and SiHemp had three sub peaks at $283, 284, and 285 eV, shown in Figure 2C,D, which stood for the C C, C OH, and C O bonds, respectively. 36 However, the covered area percentage of the C OH decreased from 13% to 3% after the modification, implying that majority of the hydroxyl groups were reacted. In addition, the C Si bond was observed ($283 eV) for SiHemp, which further confirmed the silane grafting.…”

Section: Silane Modification Of Hemp Hurdmentioning

confidence: 97%

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Crosslinking networks in epoxidized natural rubber/hemp hurd bio‐composites for the enhancement of thermal, mechanical, and water repellence properties

Chen,

Adibi,

Jubinville

et al. 2023

Polymer Composites

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Epoxidized natural rubber (ENR) bio‐composites filled with hemp hurd were fabricated via reactive batch‐mixing and vulcanization. The effect of the ENR‐hemp hurd grafting, silane modification, sulfur vulcanization, and the built‐up crosslinking networks on the thermomechanical and physical properties were analyzed. It was observed that the reactive mixing of ENR and hemp hurd caused epoxy ring opening followed by ether bonding of ENR onto the hemp hurd. There was evidence showing that the hemp fillers were also involved in the sulfur vulcanization. The sulfur vulcanized ENR bio‐composites displayed a low swelling index, homogeneous filler dispersion, and superior thermomechanical properties. The vulcanized bio‐composites with silane‐modified hemp hurd showed slightly less grafting but substantially reduced water absorption. The hardness, tensile strength, and modulus of the optimized formulation displayed a 300%, 1030%, and 960% enhancement as compared to the ENR baseline, respectively.Highlights ENR bio‐composites with hemp hurd were fabricated. Crosslinking networks were built‐up within the ENR/hemp bio‐composites. SiHemp show similar reinforcement but more water repellence. The synthesized composites had enhanced thermal and mechanical properties.

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Section: Resultsmentioning

confidence: 97%

Section: Silane Modification Of Hemp Hurdmentioning

confidence: 97%

Crosslinking networks in epoxidized natural rubber/hemp hurd bio‐composites for the enhancement of thermal, mechanical, and water repellence properties

Chen,

Adibi,

Jubinville

et al. 2023

Polymer Composites

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“…Fast charge and discharge rates are enabled by the concentric graphitic multiple shells of carbon onions, allowing facile ion accessibility and high electronic conduction [90]. Onion-like carbon can be synthesized by laser-assisted combustion [91], underwater arc-discharge [92], vacuum annealing [93], and flame pyrolysis [94].…”

Section: Onion-like Carbonmentioning

confidence: 99%

A Review of Fabrication Technologies for Carbon Electrode-Based Micro-Supercapacitors

Vandeginste

2022

Applied Sciences

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The very fast evolution in wearable electronics drives the need for energy storage micro-devices, which have to be flexible. Micro-supercapacitors are of high interest because of their high power density, long cycle lifetime and fast charge and discharge. Recent developments on micro-supercapacitors focus on improving the energy density, overall electrochemical performance, and mechanical properties. In this review, the different types of micro-supercapacitors and configurations are briefly introduced. Then, the advances in carbon electrode materials are presented, including activated carbon, carbon nanotubes, graphene, onion-like carbon, and carbide-derived carbon. The different types of electrolytes used in studies on micro-supercapacitors are also treated, including aqueous, organic, ionic liquid, solid-state, and quasi-solid-state electrolytes. Furthermore, the latest developments in fabrication techniques for micro-supercapacitors, such as different deposition, coating, etching, and printing technologies, are discussed in this review on carbon electrode-based micro-supercapacitors.

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“…6,7 Nanocarbon has gained its primary importance in developing advanced technologies owing to its chemical inertness, ease of functionalization, electrical and mechanical performances. 8,9 The low dimensional carbon-based particles consisting of localized charge trap sites and surface defects can favor polarization and electronic conduction of embedding media. 10 Hence, nanocarbon fillers with high dielectric constant and insulating polymer matrix of low loss would help ratify the fabrication of novel dielectric hybrid materials.…”

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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Mesoporous onion-like carbon nanostructures from natural oil for high-performance supercapacitor and electrochemical sensing applications: Insights into the post-synthesis sonochemical treatment on the electrochemical performance

Abstract: Graphical abstract Flame pyrolysis of paraffin oil produces onion-like carbon nanostructures that are used to modify the surface of glassy carbon electrode to investigate the supercapacitive performance and electroanalytical behavior.

Cited by 26 publications

References 57 publications

Crosslinking networks in epoxidized natural rubber/hemp hurd bio‐composites for the enhancement of thermal, mechanical, and water repellence properties

Crosslinking networks in epoxidized natural rubber/hemp hurd bio‐composites for the enhancement of thermal, mechanical, and water repellence properties

A Review of Fabrication Technologies for Carbon Electrode-Based Micro-Supercapacitors

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

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