Fabrication of current collector using a composite of polylactic acid and carbon nano-material for metal-free supercapacitors with graphene oxide separators and microwave exfoliated graphite oxide electrodes

Баскаков, С. А.; Baskakova, Yu. V.; Лысков, Н. В.; Дремова, Н. Н.; Иржак, А. В.; Kumar, Yogesh; Michtchenok, A.; Shul’ga, Yu. M.

doi:10.1016/j.electacta.2017.12.102

Cited by 30 publications

(14 citation statements)

References 28 publications

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“…The AC-TR yield was 30% of the mass of the mixture carbonized at 300 °C. The modified Hummers method was used for GO synthesis [ 49 ], and the details of the syntheses are described elsewhere [ 50 , 51 ]. An energy dispersive analysis showed that in addition to carbon, potassium (0.3–0.4 mass %) and oxygen (3–5 mass %) were present in the material.…”

Section: Methodsmentioning

confidence: 99%

The Concentration of C(sp3) Atoms and Properties of an Activated Carbon with over 3000 m2/g BET Surface Area

et al. 2021

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Plasmonic nanoresonators consisting of a gold nanorod and a spherical silica core and gold shell, both coated with a gain layer, were optimized to maximize the stimulated emission in the near-field (NF-c-type) and the outcoupling into the far-field (FF-c-type) and to enter into the spasing operation region (NF-c*-type). It was shown that in the case of a moderate dye concentration, the nanorod has more advantages: smaller lasing threshold and larger slope efficiency and larger achieved intensities in the near-field in addition to FF-c-type systems’ smaller gain and outflow threshold, earlier dip-to-peak switching in the spectrum and slightly larger far-field outcoupling efficiency. However, the near-field (far-field) bandwidth is smaller for NF-c-type (FF-c-type) core–shell nanoresonators. In the case of a larger dye concentration (NF-c*-type), although the slope efficiency and near-field intensity remain larger for the nanorod, the core–shell nanoresonator is more advantageous, considering the smaller lasing, outflow, absorption and extinction cross-section thresholds and near-field bandwidth as well as the significantly larger internal and external quantum efficiencies. It was also shown that the strong-coupling of time-competing plasmonic modes accompanies the transition from lasing to spasing occurring, when the extinction cross-section crosses zero. As a result of the most efficient enhancement in the forward direction, the most uniform far-field distribution was achieved.

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Section: Methodsmentioning

confidence: 99%

The Concentration of C(sp3) Atoms and Properties of an Activated Carbon with over 3000 m2/g BET Surface Area

et al. 2021

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“…For the GO synthesis, we used the modified Hummers method [ 51 ]. The GO production is described in detail in [ 52 , 53 ] and Supporting Information (SI) . The sponge was used in our experiments without additional pre-treatments.…”

Section: Methodsmentioning

confidence: 99%

Reduced Graphene Oxide Aerogel inside Melamine Sponge as an Electrocatalyst for the Oxygen Reduction Reaction

et al. 2021

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A graphene oxide aerogel (GOA) was formed inside a melamine sponge (MS) framework. After reduction with hydrazine at 60 °C, the electrical conductive nitrogen-enriched rGOA-MS composite material with a specific density of 20.1 mg/cm3 was used to fabricate an electrode, which proved to be a promising electrocatalyst for the oxygen reduction reaction. The rGOA-MS composite material was characterized by elemental analysis, scanning electron microscopy, X-ray photoelectron spectroscopy, and Raman spectroscopy. It was found that nitrogen in the material is presented by different types with the maximum concentration of pyrrole-like nitrogen. By using Raman scattering it was established that the rGOA component of the material is graphene-like carbon with an average size of the sp2-domains of 5.7 nm. This explains a quite high conductivity of the composite obtained.

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“…139,140 GO membranes were also successfully used as separators (∼15 μm thick) along with GO reduced by microwave exfoliation (MEGO) as electrodes in the fabrication of metal free SCs. 141…”

Section: Materials For Separator Membranesmentioning

confidence: 99%

Advances in materials and fabrication of separators in supercapacitors

2022

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Fabrication of current collector using a composite of polylactic acid and carbon nano-material for metal-free supercapacitors with graphene oxide separators and microwave exfoliated graphite oxide electrodes

Cited by 30 publications

References 28 publications

The Concentration of C(sp3) Atoms and Properties of an Activated Carbon with over 3000 m2/g BET Surface Area

The Concentration of C(sp3) Atoms and Properties of an Activated Carbon with over 3000 m2/g BET Surface Area

Reduced Graphene Oxide Aerogel inside Melamine Sponge as an Electrocatalyst for the Oxygen Reduction Reaction

Advances in materials and fabrication of separators in supercapacitors

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