Quantum Energy Storage in Dielectric&lt;Ionic Liquid&gt; Porous Clathrates

Chabecki, Piotr

doi:10.3390/en15166069

Cited by 2 publications

(1 citation statement)

References 34 publications

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“…The energy capacity of SC is being increased in two main ways: by increasing the specific capacitance of the active electrode material and by increasing the maximum operating voltage. The first task is to increase the capacity of the double electric layer of carbon materials, and the second is to use organic electrolytes and electrolytes based on ionic liquids [1,2].…”

Section: Introductionmentioning

confidence: 99%

Charge Storage and Magnetic Properties Nitrogen-Containing Nanoporous Bio-Carbon

Szymczykiewicz,

Bordun,

Maksymych

et al. 2024

Energies

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This article presents the technology for the preparation of a nitrogen-containing nanoporous bio-carbon and investigates its properties. It has been shown that the synthesised bio-carbon is characterised by a high degree of homogeneity, which has been confirmed by energy dispersive spectroscopy. The obtained bio-carbon has a micromesoporous structure, which has been confirmed by the results of studies using the method of low-temperature nitrogen adsorption and desorption. It was found that the specific surface area of biochar is 1247 m2/g. The data on nitrogen adsorption and desorption were compared with the data on small-angle X-ray scattering, and it was found that the micropores in the synthesised bio-carbon are open pores, while mesopores remain closed. The energy dispersion analysis showed that the structure of the bio-carbon does not contain ferromagnetic atoms, but due to the addition of nitrogen, the synthesised bio-carbon in a magnetic field has the properties of a ferromagnet with a characteristic hysteresis of the specific magnetisation. It was found that this material has a saturation magnetisation σs of 1.4 A∙m2∙kg−1 and a coercive force Hc of 10 kA/m. Symmetric supercapacitors were fabricated from the synthesised bio-carbon material with 30% aqueous KOH and 1 M Na2SO4 as electrolytes. It was found that for bio-carbon synthesised at 800 °C, the specific capacitance in a 30% aqueous solution of KOH is 180 F/g, and in a 1 M aqueous solution of Na2SO4, it is 124 F/g. The cyclic voltammetry of the fabricated supercapacitors at different rates of potential expansion was investigated and analysed. Impedance studies on these supercapacitors were carried out. The equivalent electrical circuits describing the electrochemical processes in the studied supercapacitors were constructed and characterised.

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Section: Introductionmentioning

confidence: 99%

Charge Storage and Magnetic Properties Nitrogen-Containing Nanoporous Bio-Carbon

Szymczykiewicz,

Bordun,

Maksymych

et al. 2024

Energies

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The INVESTIGATION OF THE POROUS STRUCTURE OF CARBON SORBENTS BASED ON Β-Cyclodextrin FOR USE IN ENVIRONMENTAL PROTECTION TECHNOLOGIES

Bordun¹,

Malovanyy²,

Szymczykiewicz³

2023

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In this paper, the porous structure of three types of β-cyclodextrin (β-CD) carbons was synthesized and investigated. The first carbon was obtained from pure β-CD, the second carbon was synthesized from β-CD using the KOH activator, and the third carbon was synthesized from pure β-CD with additional ultrasonic treatment in the non-cavitation mode at the last stage. It was found that the carbon from pure β-CD has a micromesoporous structure with a small specific surface area (~35 m2/g). Activation with KOH causes a significant increase in the specific surface area (~654 m2/g) due to an increase in the content of micropores with an average size of 1,25 nm. The ultrasonic treatment causes mechanical grinding and oxidation of the carbon surface. It has been shown that such treatment increases the mesopore content and significantly changes the mesopore size distribution. It has been established that the oxidation of the β-CD carbon surface after ultrasonic treatment causes an increase in its hydrophilicity of up to 83,1%. The increase in hydrophilicity will allow more efficient use of synthesized carbon and composites based on it in solving the problems of environmental safety in water environments.

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Quantum Energy Storage in Dielectric<Ionic Liquid> Porous Clathrates

Cited by 2 publications

References 34 publications

Charge Storage and Magnetic Properties Nitrogen-Containing Nanoporous Bio-Carbon

Charge Storage and Magnetic Properties Nitrogen-Containing Nanoporous Bio-Carbon

The INVESTIGATION OF THE POROUS STRUCTURE OF CARBON SORBENTS BASED ON Β-Cyclodextrin FOR USE IN ENVIRONMENTAL PROTECTION TECHNOLOGIES

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