Vladimir A. Khokhlov
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Previous Organizations / Institutes
The organizations / institutes from the scholar's other articles in the past ten years
Vladimir A. Khokhlov has a total of 111 co-authors. Here are the top co-authors by number of shared publications:
- Iraida V. Korzun
Institute of High-Temperature Electrochemistry, Yekaterinburg, Russia
8 shared publications V. N. Dokutovich
Institute of High-Temperature Electrochemistry, Yekaterinburg, Russia
8 shared publicationsV. A. Kochedykov
Institute of High-Temperature Electrochemistry, Yekaterinburg, Russia
4 shared publicationsVladimir Shishkin
4 shared publicationsA. B. Salyulev
Russian Academy of Sciences
3 shared publications- Alexei M. Potapov
Institute of High-Temperature Electrochemistry, Ural Branch, Russian Academy of Sciences, Yekaterinburg, Russia
3 shared publications
Latest Publications
- 1 February 2023
- Published by The Russian Academy of Sciences in Электрохимия
- Vol. 59 (2) , 81-91
The Electrophoretic Deposition of Lithium Cobaltate Nanosized Particles on the Surface of Metals and Electroconductive Oxide Ceramics
The Electrophoretic Deposition of Lithium Cobaltate Nanosized Particles on the Surface of Metals and Electroconductive Oxide Ceramics Электрофоретическое осаждение наноразмерных частиц кобальтата лития на поверхности металлов и электропроводящей оксидной керамики
- 1 February 2023
- Published by The Russian Academy of Sciences in Электрохимия
- Vol. 59 (2) , 81-91
The Electrophoretic Deposition of Lithium Cobaltate Nanosized Particles on the Surface of Metals and Electroconductive Oxide Ceramics
The Electrophoretic Deposition of Lithium Cobaltate Nanosized Particles on the Surface of Metals and Electroconductive Oxide Ceramics Электрофоретическое осаждение наноразмерных частиц кобальтата лития на поверхности металлов и электропроводящей оксидной керамики
- 1 February 2023
- Published by Pleiades Publishing Ltd in Russian Journal of Electrochemistry
- Vol. 59 (2) , 105-115
The Electrophoretic Deposition of Lithium Cobaltate Nanosized Particles on the Surface of Metals and Electroconductive Oxide Ceramics
The deposition of LiCoO2 nanosized particles synthesized in LiCl–CoCl2 melts on the surface of nickel foil, copper, chrome–cobalt alloy, and platinum mesh in aqueous solutions of lithium chloride at the room temperature as well as on the surface of the electron-conducting La0.6Sr0.4MnO3 oxide ceramics in chloride melt at temperature of ca. 700°C is studied. The methods of vibrational spectroscopy, X-ray photoelectron spectroscopy, ellipsometry, and scanning electron microscopy have revealed the features of the chemical composition, structure, and morphology of the precipitates obtained.
- 1 February 2023
- Published by Pleiades Publishing Ltd in Russian Journal of Electrochemistry
- Vol. 59 (2) , 105-115
The Electrophoretic Deposition of Lithium Cobaltate Nanosized Particles on the Surface of Metals and Electroconductive Oxide Ceramics
The deposition of LiCoO2 nanosized particles synthesized in LiCl–CoCl2 melts on the surface of nickel foil, copper, chrome–cobalt alloy, and platinum mesh in aqueous solutions of lithium chloride at the room temperature as well as on the surface of the electron-conducting La0.6Sr0.4MnO3 oxide ceramics in chloride melt at temperature of ca. 700°C is studied. The methods of vibrational spectroscopy, X-ray photoelectron spectroscopy, ellipsometry, and scanning electron microscopy have revealed the features of the chemical composition, structure, and morphology of the precipitates obtained.
- Open Access
Molten Chlorides as the Precursors to Modify the Ionic Composition and Properties of LiNbO3 Single Crystal and Fine Powders
Modifying lithium niobate cation composition improves not only the functional properties of the acousto- and optoelectronic materials as well as ferroelectrics but elevates the protonic transfer in LiNbO3-based electrolytes of the solid oxide electrochemical devices. Molten chlorides and other thermally stable salts are not considered practically as the precursors to synthesize and modify oxide compounds. This article presents and discusses the results of an experimental study of the full or partial heterovalent substitution of lithium ion in nanosized LiNbO3 powders and in the surface layer of LiNbO3 single crystal using molten salt mixtures containing calcium, lead, and rare-earth metals (REM) chlorides as the precursors. The special features of heterovalent ion exchange in chloride melts are revealed such as hetero-epitaxial cation exchange at the interface PbCl2-containing melt/lithium niobate single crystal; the formation of solid solutions with cation vacancies as an intermediate product of the reaction of heterovalent substitution of lithium ion by calcium in LiNbO3 powders; the formation of lanthanide orthoniobates with a tetragonal crystal structure such as scheelite as the result of lithium niobate interaction with trichlorides of rare-earth elements. It is shown that the fundamental properties of ion-modifiers (ion radius, nominal charge), temperature, and duration of isothermal treatment determine the products’ chemical composition and the rate of heterovalent substitution of Li+-ion in lithium niobate.Open AccessMolten Chlorides as the Precursors to Modify the Ionic Composition and Properties of LiNbO3 Single Crystal and Fine Powders
Modifying lithium niobate cation composition improves not only the functional properties of the acousto- and optoelectronic materials as well as ferroelectrics but elevates the protonic transfer in LiNbO3-based electrolytes of the solid oxide electrochemical devices. Molten chlorides and other thermally stable salts are not considered practically as the precursors to synthesize and modify oxide compounds. This article presents and discusses the results of an experimental study of the full or partial heterovalent substitution of lithium ion in nanosized LiNbO3 powders and in the surface layer of LiNbO3 single crystal using molten salt mixtures containing calcium, lead, and rare-earth metals (REM) chlorides as the precursors. The special features of heterovalent ion exchange in chloride melts are revealed such as hetero-epitaxial cation exchange at the interface PbCl2-containing melt/lithium niobate single crystal; the formation of solid solutions with cation vacancies as an intermediate product of the reaction of heterovalent substitution of lithium ion by calcium in LiNbO3 powders; the formation of lanthanide orthoniobates with a tetragonal crystal structure such as scheelite as the result of lithium niobate interaction with trichlorides of rare-earth elements. It is shown that the fundamental properties of ion-modifiers (ion radius, nominal charge), temperature, and duration of isothermal treatment determine the products’ chemical composition and the rate of heterovalent substitution of Li+-ion in lithium niobate. - 1 February 2020
- Published by Pleiades Publishing Ltd in Russian Metallurgy (Metally)
- Vol. 2020 (2) , 144-149
Modification of the Cationic Composition of LiNbO3 and LiTaO3 Nanopowders in Calcium-Containing Chloride Melts
The ionic compositions of lithium metaniobate and metatantalate nanopowders are modified in calcium-containing chloride melts. The reaction products are studied by X-ray diffraction, Raman spectroscopy, scanning electron microscopy, energy dispersive X-ray spectroscopy, and elemental chemical analysis. The results of the studies show that the surface layer of the modified small-size particles of the lithium niobate or lithium tantalate powders is enriched in calcium metaniobate or metatantalate (CaNb2O6 or CaTa2O6) formed due to the isomorphic heterovalent substitution of calcium ions for lithium ions in molten LiCl–CaCl2 and KCl–CaCl2 mixtures at 700 and 750°C.
- 1 February 2020
- Published by Pleiades Publishing Ltd in Russian Metallurgy (Metally)
- Vol. 2020 (2) , 144-149
Modification of the Cationic Composition of LiNbO3 and LiTaO3 Nanopowders in Calcium-Containing Chloride Melts
The ionic compositions of lithium metaniobate and metatantalate nanopowders are modified in calcium-containing chloride melts. The reaction products are studied by X-ray diffraction, Raman spectroscopy, scanning electron microscopy, energy dispersive X-ray spectroscopy, and elemental chemical analysis. The results of the studies show that the surface layer of the modified small-size particles of the lithium niobate or lithium tantalate powders is enriched in calcium metaniobate or metatantalate (CaNb2O6 or CaTa2O6) formed due to the isomorphic heterovalent substitution of calcium ions for lithium ions in molten LiCl–CaCl2 and KCl–CaCl2 mixtures at 700 and 750°C.
- 20 September 2019
- Published by Springer Nature in MRS Communications
- Vol. 9 (4) , 1300-1305
Modifying chemical composition of the fine Ni4Nb2O9 powders using chloride melts as reaction medium
- 20 September 2019
- Published by Springer Nature in MRS Communications
- Vol. 9 (4) , 1300-1305
Modifying chemical composition of the fine Ni4Nb2O9 powders using chloride melts as reaction medium
- 1 February 2019
- Published by Pleiades Publishing Ltd in Russian Metallurgy (Metally)
- Vol. 2019 (2) , 90-96
Structural and Morphological Peculiarities of the Lithium Niobate and Lithium Tantalate Powders Synthesized in Chloride Melts
A new method for synthesizing lithium niobate and lithium tantalate is proposed and tested. It is based on the interaction between lithium, niobium, and tantalum oxides, which are formed...
- 1 February 2019
- Published by Pleiades Publishing Ltd in Russian Metallurgy (Metally)
- Vol. 2019 (2) , 90-96
Structural and Morphological Peculiarities of the Lithium Niobate and Lithium Tantalate Powders Synthesized in Chloride Melts
A new method for synthesizing lithium niobate and lithium tantalate is proposed and tested. It is based on the interaction between lithium, niobium, and tantalum oxides, which are formed...
- 1 April 2018
- Published by Elsevier in International Journal of Heat and Mass Transfer
- Vol. 119, 365-371
Thermal conductivity of composite materials: Alkali carbonate-based melts filled with fine α-Al2O3
- 1 April 2018
- Published by Elsevier in International Journal of Heat and Mass Transfer
- Vol. 119, 365-371
Thermal conductivity of composite materials: Alkali carbonate-based melts filled with fine α-Al2O3
- 1 December 2017
- Published by Elsevier in Electrochimica Acta
- Vol. 257, 510-515
The electrical conductivity of model melts based on LiCl-KCl, used for the processing of spent nuclear fuel
- 1 December 2017
- Published by Elsevier in Electrochimica Acta
- Vol. 257, 510-515
The electrical conductivity of model melts based on LiCl-KCl, used for the processing of spent nuclear fuel
- 1 February 2017
- Published by Pleiades Publishing Ltd in Russian Metallurgy (Metally)
- Vol. 2017 (2) , 95-99
Electrical conductivity of KAlCl4–ZrCl4 molten mixtures
The electrical conductivity of commercially challenging KAlCl4–ZrCl4 molten mixtures has been studied as a function of temperature (in the range from 345°C to 500°C) and the ZrCl4 concentration (0‒32.5mol %) using cells of a unique design. It is found to vary in the range from 0.41 to 0.80 S cm–1, increasing with temperature or when the mole concentration of zirconium tetrachloride in molten mixtures decreases.
- 1 February 2017
- Published by Pleiades Publishing Ltd in Russian Metallurgy (Metally)
- Vol. 2017 (2) , 95-99
Electrical conductivity of KAlCl4–ZrCl4 molten mixtures
The electrical conductivity of commercially challenging KAlCl4–ZrCl4 molten mixtures has been studied as a function of temperature (in the range from 345°C to 500°C) and the ZrCl4 concentration (0‒32.5mol %) using cells of a unique design. It is found to vary in the range from 0.41 to 0.80 S cm–1, increasing with temperature or when the mole concentration of zirconium tetrachloride in molten mixtures decreases.
- 1 January 2017
- Published by Allerton Press in Russian Journal of Non-Ferrous Metals
- Vol. 58 (1) , 30-35
Modeling of electric and thermal fields in an electrolyzer with liquid-metal electrodes
The influence of the molten electrolyte composition and geometric configuration of the electrolyzer with liquid-metal lead electrodes on the spatial distribution of dc and temperature in an apparatus of the “crucible-in-crucible” type, which is considered a prototype of the device to process spent nuclear fuel, is studied by mathematical modeling. It is shown that the calculated model parameters are in good agreement with the experimental data.
- 1 January 2017
- Published by Allerton Press in Russian Journal of Non-Ferrous Metals
- Vol. 58 (1) , 30-35
Modeling of electric and thermal fields in an electrolyzer with liquid-metal electrodes
The influence of the molten electrolyte composition and geometric configuration of the electrolyzer with liquid-metal lead electrodes on the spatial distribution of dc and temperature in an apparatus of the “crucible-in-crucible” type, which is considered a prototype of the device to process spent nuclear fuel, is studied by mathematical modeling. It is shown that the calculated model parameters are in good agreement with the experimental data.