Influence of plant biomass activation conditions on the structure and electrochemical properties of nanoporous carbon material

Ostafiychuk, B. K.; Ivanichok, N.Ya.; Sklepova, S-V.S.; Ivanichok, O.M.; Kotsyubynsky, Volodymyr; Kolkovskyy, P.I.; Budzulyak, І. М.; Lisovskiy, R. P.

doi:10.1016/j.matpr.2022.01.486

Cited by 5 publications

(4 citation statements)

References 24 publications

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“…6) compared to the unmodified material. Due to the fact that for all samples there is a general tendency to decrease W when the potential changes to the negative region, this parameter can be associated with diffusion processes involving K + ions in the carbon matrix [8,9].…”

Section: Experimental Discussion Of the Resultsmentioning

confidence: 99%

Stimulation of the metal doping process of nanoporous carbon material by laser irradiation

Budzulyak,

Yablon,

Khemii

et al. 2023

Phys. Chem. Solid St.

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It has been established that the doping of activated carbon material with chromium and manganese increases the specific capacitance of storage devices based on the charge-discharge mechanism of a double electric layer (DEL) by ~70 % and leads to a decrease in their internal resistance by 30-35 %. The main reason for this rise is the transformation of the electron energy spectrum due to an increase in the density of electronic states, as a result of which a much larger number of electrolyte ions (primarily positive ones) participate in the formation of DEL and cause an increase in the specific capacitance of these devices. It has been shown that laser irradiation stimulates the metal penetration into the bulk of carbon material.

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Section: Experimental Discussion Of the Resultsmentioning

confidence: 99%

Stimulation of the metal doping process of nanoporous carbon material by laser irradiation

Budzulyak,

Yablon,

Khemii

et al. 2023

Phys. Chem. Solid St.

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show abstract

“…The basis for calculating the values of the specific surface area (SВЕТ), the specific surface area of micropores (Smiсro) and mesopores (Smeso), as well as the value of the total pore volume (VΣ) and the volume of micropores (Vmiсro), as well as the distribution of pores by the dimensions were the analysis of sorption isotherms [10][11][12]. Before the measurements, the samples were degassed at a temperature of 180 °C for 18 hours.…”

Section: Resultsmentioning

confidence: 99%

Structural and sorption properties of nanoporous carbon materials obtained from walnut shells

Lisovska,

Ilnytskyy,

Lisovskyy

et al. 2023

Phys. Chem. Solid St.

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Using the method of low-temperature nitrogen adsorption/desorption, the porous structure of nanoporous carbon materials obtained by alkaline activation of light industry waste (walnut shells) with subsequent thermal modification was investigated. The optimal relationship between temperature and modification time has been established. It is shown that an increase in the modification temperature reduces the transition time of micropores into mesopores and leads to a decrease in the specific surface area and total pore volume. Thus, the material obtained at a modification temperature of 400 ºC and a holding time of 120 min is characterized by the maximum specific surface area of 940 m2/g. It has been investigated that an increase in the time of temperature modification leads to an increase in specific electrical conductivity.

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“…Generally, the performance of electrode materials for supercapacitors is intimately dependent on both the accessible specific surface area and the pore structure [117]. In this respect, carbon materials undoubtedly have a huge advantage [118]. As mentioned in Section 3.4, many carbon materials have a highly open porous structure that allows the electrolyte to enter the surface of the porous frame [26,27,119].…”

Section: Supercapacitorsmentioning

confidence: 99%

Carbon materials: structures, properties, synthesis and applications

Jiang¹,

Yin²,

Qin³

2023

Manufacturing Rev.

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As one of the most versatile elements, carbon materials occupy the most plentiful allotropies composed of pure or mixed hybridization orbitals of sp1/sp2/sp3. The design and synthesis of new carbon materials may be stimulated based on a deeper understanding of underlying structures and related properties. In this review, the initial early discoveries of carbon materials are examined based on their hybridization of orbitals. According to the type of hybridization, the discovered carbon materials are firstly classified and introduced in detail based on their crystal structures. Secondly, its physical and chemical properties, mainly including mechanical properties, optical properties and electronic properties, are reviewed. Thirdly, the existing methods of predicting carbon structure and synthesizing carbon materials are classified and summarized, and some typical carbon materials predicted or prepared are discussed respectively. Then, the main applications of newly synthesized carbon materials in the last two decades are classified and summarized, and the microstructure is linked with the macro properties and specific applications. Finally, the future research opportunities for carbon materials and their potential applications are prospected from the aspects of the gap between theoretical prediction and preparation, the current research hotspot of carbon materials and the incomplete application of carbon materials. It is the authors' intention for this review paper to serve not only as a valuable reference for research into carbon materials and related composites, but also as a guidance for novel materials design at the atomic level.

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Influence of plant biomass activation conditions on the structure and electrochemical properties of nanoporous carbon material

Cited by 5 publications

References 24 publications

Stimulation of the metal doping process of nanoporous carbon material by laser irradiation

Stimulation of the metal doping process of nanoporous carbon material by laser irradiation

Structural and sorption properties of nanoporous carbon materials obtained from walnut shells

Carbon materials: structures, properties, synthesis and applications

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