The ultrasonic modification of thermodynamic and kinetic regularity of lithium intercalation in talc

Balaban, O.; Grygorchak, I. I.; Peleshchak, Roman; Kuzyk, O. V.; Dan’kiv, O. O.

doi:10.1016/j.pnsc.2014.07.003

Cited by 8 publications

(9 citation statements)

References 10 publications

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“…In this work, the expression for the free energy density of the nonuniform strained epitaxial layer with point defects in the direction of the growth axis, within the elastic continuum, without taking into account anharmonic terms, is represented as [19]:…”

Section: The Model Of Self-consistent Deformation-diffusion Phenomena...mentioning

confidence: 99%

The Modeling of Self-Consistent Electron–Deformation–Diffusion Effects in Thin Films with Lattice Parameter Mismatch

et al. 2023

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In our work, the model of self-consistent electron–deformation–diffusion effects in thin films grown on substrate with the mismatch of lattice parameters of the contacting materials is constructed. The proposed theory self-consistently takes into account the interaction of the elastic field (created by the mismatch of lattice parameters of the film and the substrate, and point defects) with the diffusion processes of point defects and the electron subsystem of semiconductor film. Within the framework of the developed model, the spatial distribution of deformation, concentration of defects, conduction electrons and electric field intensity is investigated, depending on the value of the mismatch, the type of defects, the average concentrations of point defects and conduction electrons. It is established that the coordinate dependence of deformation and the concentration profile of defects of the type of stretching (compression) centers, along the axis of growth of the strained film, have a non-monotonic character with minima (maxima), the positions of which are determined by the average concentration of point defects. It is shown that due to the electron–deformation interaction in film with a lattice parameter mismatch, the spatial redistribution of conduction electrons is observed and n-n+ transitions can occur. Information about the self-consistent spatial redistribution of point defects, electrons and deformation of the crystal lattice in semiconductor materials is necessary for understanding the problems of their stability and degradation of nano-optoelectronic devices operating under conditions of intense irradiation.

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Section: The Model Of Self-consistent Deformation-diffusion Phenomena...mentioning

confidence: 99%

The Modeling of Self-Consistent Electron–Deformation–Diffusion Effects in Thin Films with Lattice Parameter Mismatch

et al. 2023

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“…Тому можна очікувати, що при розташуванні напівпровідника в зовнішньому електричному полі, можна змінювати умови формування лазерно-індукованих періодичних поверхневих наноструктур і прогнозовано керувати їх параметрами за рахунок взаємодії електричного поля із неоднорідно розподіленими по поверхні вільними носіями струму. Також, очевидно, що дія зовнішніх пружних полів впливатиме на умови формування нанокластерів [9,[17][18][19]. Зокрема, в роботі [9] представлено результати експериментальних досліджень зовнішнього впливу механічної деформації на умови формування квантових точок.…”

Section: вступunclassified

Formation of Nanoclusters on the Adsorbed Surface under the Action of Comprehensive Pressure and Electric Field

Peleshchak¹,

Kuzyk

Dan’kiv

2019

PCSS

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In the paper, the influence of the electric field and the comprehensive pressure on the conditions of formation and the period of the surface superlattice of adatoms in semiconductors is investigated. It is established that in GaAs semiconductor, an increase in the comprehensive pressure and the electric field strength, depending on the direction, leads to an increase or decrease of the critical temperature (the critical concentration of adatoms), at which the formation of self-organized nanostructure is possible. It is shown that in strongly alloyed n-GaAs semiconductor, the increase of the electric field strength leads to a monotonous change (decrease or increase depending on the direction of the electric field) of the period of self-organized surface nanostructures of adatoms. The period of nanometer structure of the adatoms depending on the value of comprehensive pressure, temperature, average concentration of the adatoms and conduction electrons is defined. It is established that the increase in pressure leads to expansion of temperature intervals within which nanometer structures of the adatoms are formed, and the decrease of their period.

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“…However, the values of both the specific capacity and the energy are still far from theoretically possible ones in comparison with the electrochemical equivalent of lithium [9,10]. It became clear that the success in a significant increase in the energy effectiveness of unit mass and the volume of material cannot be achieved only through an extension of the assortment of new cathode materials [11]; a radical revision of the conceptual approaches is required there [12].…”

Section: Introductionmentioning

confidence: 99%

Li⁺ intercalation current generation in amorphous and crystalline MoS₂: Experiment and theory

Balaban

Izhyk

Zaichenk³

et al. 2023

physics

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In this work, crystalline and amorphous nano-MoS2 materials for effective Li+-intercalation current generation have been synthesized. The effect of disordering on the structural and electrochemical properties of nano-MoS2 has been systematically investigated by multiple characterizations: transmission electron microscopy (TEM), X-ray diffraction method and electrochemical measurements. Thermodynamic and kinetic peculiarities of intercalation processes have been studied. Dependences of the change in Gibbs’ free energy of the intercalation reaction on the extent of ‘guest’ lithium loading are analyzed. The distinctive feature of disordered structures is their ability to show colossal lithium ‘guest’ load, which ensures the specific capacity of the material in cathode processes up to ~2500 mAh·g–1 under the discharge not less than 2.6 V relative to lithium. The diffusion coefficient of lithium cations in the structure of disordered nano-MoS2 is two orders of magnitude higher than that in the crystalline MoS2.A quantum-mechanical model of the observed phenomena is suggested.

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The ultrasonic modification of thermodynamic and kinetic regularity of lithium intercalation in talc

Cited by 8 publications

References 10 publications

The Modeling of Self-Consistent Electron–Deformation–Diffusion Effects in Thin Films with Lattice Parameter Mismatch

The Modeling of Self-Consistent Electron–Deformation–Diffusion Effects in Thin Films with Lattice Parameter Mismatch

Formation of Nanoclusters on the Adsorbed Surface under the Action of Comprehensive Pressure and Electric Field

Li⁺ intercalation current generation in amorphous and crystalline MoS₂: Experiment and theory

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The ultrasonic modification of thermodynamic and kinetic regularity of lithium intercalation in talc

Cited by 8 publications

References 10 publications

The Modeling of Self-Consistent Electron–Deformation–Diffusion Effects in Thin Films with Lattice Parameter Mismatch

The Modeling of Self-Consistent Electron–Deformation–Diffusion Effects in Thin Films with Lattice Parameter Mismatch

Formation of Nanoclusters on the Adsorbed Surface under the Action of Comprehensive Pressure and Electric Field

Li+ intercalation current generation in amorphous and crystalline MoS2: Experiment and theory

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Li⁺ intercalation current generation in amorphous and crystalline MoS₂: Experiment and theory