Korbova Ekaterina

Scopus Publications

Experimental Investigation of two low-cost 5 kW alkaline electrolyzer prototypes' performances depending on size and applied voltage
Lilian Rabillard, Praveen Thappily, Priyadharshini Matheswaran, Rosalinda Inguanta, Myeongsub Kim, Michael Lipkin, Tatyana V. Kozlova, Farkad Latieff, Philippe Mandin
International Journal of Hydrogen Energy, 2025
In light of the energy transition, developing efficient and scalable hydrogen production technologies is essential for reducing greenhouse gas emissions and meeting global energy needs. Studying the electrical performance of electrolyzers, this study examines the effect of various parameters such as surface area, electrolyte concentration, temperature, and applied voltage on hydrogen production and efficiency. The experimental setup involved the evaluation of five electrolyzer stacks with surface areas of both 400 cm2 and 825 cm2. The electrolytes were the NaOH aqueous solutions with mass concentrations of 1 wt%, 3 wt%, and 5 wt%. At the same time, the cell voltage varied between 10 V and 15 V. For the 400 cm2 stack, a 1 kW power output was achieved at a 5 wt% electrolyte concentration and a voltage range of 13 V–15 V. The 825 cm2 stack also reached a similar power output, but at a lower concentration of 4 wt%. At higher electrolyte concentrations, the 400 cm2 stack outperformed the 825 cm2 stack in terms of current density. With 0.181 A/cm2 at 15 V and 5 wt%, it exceeded the 0.1 A/cm2 benchmark for efficient operation. According to temperature analysis, the temperature increased linearly to 60 °C before approaching 90 °C asymptotically. To prevent boiling and possible system damage, safety procedures were put in place to cease operation at 85 °C. Concerning hydrogen production, the 400 cm2 stacks showed a linearly increasing volumetric flow rate with voltage and NaOH concentration, reaching a maximum of 5 SLPM at 15 V and 5 wt%. These findings carry crucial implications for the design of more efficient and cost-effective electrolyzers for industrial hydrogen production.
Study of a Tin-Based Composite Anode in a Gel–Polymer Electrolyte
M. S. Lipkin, Y. V. Verdi, O. Y. Reznikova, A. Y. Domanyuk, E. V. Korbova, A. V. Emelin, V. M. Lipkin, A. V. Semenkova
Inorganic Materials Applied Research, 2025
Cross-Disciplinary Glucose Biosensors: An ORMOSIL/Enzyme Material for Enhanced Detection
Lyubov S. Kuznetsova, Kristina D. Ivanova, Elizaveta A. Lantsova, Evgeniya A. Saverina, Anna S. Kharkova, Christian Guetnga, Michael S. Lipkin, Olga A. Kamanina, Tatyana V. Kozlova, Nadezhda M. Popova, Anna A. Savishcheva, Timofey V. Losev, Danis R. Bekmansurov, Vasiliy A. Chaliy, Michael G. Medvedev, Anatoly N. Vereshchagin, Vyacheslav A. Arlyapov, Valentine P. Ananikov
ACS Applied Polymer Materials, 2024
In this study, we introduce an efficient approach to cross-disciplinary glucose biosensor technology through the development of hybrid nanocomposite materials. These materials were crafted from redox-active polymers embedded in silica sol–gel matrices, intricately linked with phenazine mediators and reinforced with carbon nanotubes. By leveraging advanced analytical techniques, including NMR spectroscopy, scanning electron microscopy, and confocal microscopy, we characterized the structures of these redox-active polymers. Our investigation further addressed their electrochemical behaviors by employing cyclic voltammetry and impedance spectroscopy to elucidate their distinctive properties. Employing a complex analytical strategy and a computational approach, this study identified an optimal redox-active system that shows synergy between multiwalled nanotubes and engineered redox-active polymers. This polymer, which is composed of (3-aminopropyl)triethoxysilane and tetraethoxysilane at an optimized ratio of 20:80 vol %, is seamlessly integrated with a covalently bonded neutral red mediator. The resulting biosensor is capable of detecting glucose across a range of 0.01–0.92 mM with a low detection limit of 0.003 mM. Its operational stability is 1.9%, coupled with an unparalleled selectivity that holds promise for further enhancement through machine learning techniques. This machine learning breakthrough represents a significant leap forward in the accurate quantification of glucose in diverse samples, achieving a high degree of correlation with established methods. The composite material revealed in this research has implications for further applications in biosensing technology. The biocompatibility, nontoxicity, stability, and superior conductivity of the material underscore its potential in the field, opening possibilities for the development of blood glucose measurement techniques.
Regularities of Obtaining Electrochromic WO3 Films at the Cathode Polarization of the Electrode
A. V. Shchegolkov, A. V. Shchegolkov, M. S. Lipkin, F. F. Komarov, I. D. Parfimovich
Russian Journal of General Chemistry, 2024
Abstract In the article, electrochromic WO3 films were obtained from 25, 100, and 200 mM peroxytungstic acid (PTA) solution. A chronoamperogram of the cathodic reduction of tungsten oxide (WO3) through the stages of formation of a precursor film adsorbed on the surface of the ITO electrode and its subsequent staged reduction to WO3 and side formation of soluble reaction products is presented. The material yield of the WO3 film on ITO glass was within 50%, which is due to the parallel occurrence of side processes associated with hydrogen evolution and the reduction of tungsten complexes that were in the precipitation solution (WO3 reduction scheme). In this case, it was taken into account that thin WO3 films were the final product. The features of the synthesis of peroxytungstic acid have been studied. It has been shown that the reaction of W dissolution in 37% H2O2 proceeds exothermically. In this case, the reaction temperature reached 96°C within a few seconds, and its decline varied exponentially with the formation of reaction products. The dependence of the limiting current on the square root is obtained. The presented graphic dependence is characterized by linearity, while the beginning of the straight line does not coincide with the origin. The process of intercalation-deintercalation of protons (H+) (cathode-anode branches of CV) was a consequence of structural and reversible changes as a result of H+ intercalation. WO3 films obtained by electrochemical (cathodic) deposition can be recommended as an electrode material for electrochromic devices (cathode) and as a material for electrochemical sensors. Another promising direction is the development of a wide band gap anode based on WO3 for photovoltaic devices, which are energy efficient hydrogen generation systems.
Diagnostics of Lithium-Ion Batteries by Electrochemical Impedance Methods
Ekaterina V. Korbova, Michael S. Lipkin, Ekaterina A. Vilbitskaya
Proceedings 2023 International Conference on Industrial Engineering Applications and Manufacturing Icieam 2023, 2023
Possibilities of electrochemical impedance spectroscopy for analysis of self-discharge reasons of prismatic lithium-ion batteries (LIB) are considered. It is shown that conclusions about the causes of self-discharge can be drawn from the topology and parameters of the substitution circuits. Presence of additional series links in the circuit and small value of ohmic resistance between the electrodes allows predicting self-discharge by internal bridges which are represented by electrode materials particles flaking off the electrodes and embedding into the separation. The presence of parallel links in the substitution circuit of one or both electrodes, is an indication of their heterogeneous operation due to the small amount of electrolyte or its decomposition.
On the Mechanism of Formation of Electrochromic WO3 Films on the Surface of Sn, Ti, ITO Electrodes in the Process of Cathodic Electrodeposition
Alexey V. Shchegolkov, M. S. Lipkin, Alexander V. Shchegolkov, E. V. Korbova, T. V. Lipkina, V. M. Lipkin
Inorganic Materials Applied Research, 2022
Abstract—The mechanism of the electrochemical formation of WO3 films on the surface of titanium, tin, and ITO electrodes is investigated under various regimes, including the deposition time τ = 2000–8000 s and the electrochemical potential of deposition on the cathode in the range from –0.4 to –1 V. A technique for the synthesis of peroxytungstic acid and a method of cathodic electrodeposition are presented. The studies carried out with tin and titanium extend the field of application of WO3 films to technologies of chemical current sources and fuel cells.
Analysis of Peukert Generalized Equations Use for Estimation of Remaining Capacity of Automotive-Grade Lithium-Ion Batteries
Nataliya N. Yazvinskaya, Mikhail S. Lipkin, Nikolay E. Galushkin, Dmitriy N. Galushkin
Batteries, 2022
In this paper, it is shown that the Peukert generalized equations C = Cm/(1 + (i/i0)n), C = 0.522Cmtanh((i/i0)n/0.522)/(i/i0)n and C = Cmerfc((i/ik − 1)/(1/n))/erfc(−n) are applicable for capacity estimation of the automotive-grade lithium-ion batteries within the discharge current range, from 0 to 10 Cn. Additionally, it is shown here that all the parameters (Cm, n, i0 and ik) in the Peukert generalized equations under study have a clear physical meaning, unlike in the classical Peukert equation, in which all the parameters are just empirical constants. In addition, it is shown that, in the case of lithium-ion batteries, the dependence of their released capacity on the discharge current reflects the phase transition statistical pattern in the electrodes’ active substance, which follows the normal distribution law. As the Peukert equation is used in many analytical models, the better electrochemical and physical meaning and understanding of this equation and its clarification are of great practical importance.
Preparation of WO3 Films on Titanium and Graphite Foil for Fuel Cell and Supercapacitor Applications by Electrochemical (Cathodic) Deposition Method
Al. V. Shchegolkov, M. S. Lipkin, A. V. Shchegolkov
Russian Journal of General Chemistry, 2022
Numerous electrochemical and chemical methods are suitable for preparation of tungsten trioxide (WO3) films. Many of these methods, however, have not been carefully studied, so information on the specific features of the WO3 film deposition technology is lacking. This paper describes the preparation of WO3 films by cathodic electrodeposition from the synthesized solution of peroxotungstic acid (PTA) on the surface of thermally expanded graphite (TEG) and titanium electrodes designed as foils. A stepwise pattern of reduction of tungsten oxides from PTA was revealed. The suitability of the WO3 film electrode as a material for electrochemical power industry was experimentally demonstrated. Specifically, WO3/Ti was found to be applicable as a protective coating for hydrogen fuel cells, and WO3/TEG, as a cathode material for asymmetric supercapacitors. Based on the charge-discharge curves for the WO3/TEG electrode used as a cathode in the free volume of th KOH electrolyte, the specific capacitance of the supercapacitor was estimated at 630 F/g. Electrochemical analysis showed that that WO3 films deposited on the titanium surface afford enhancement of the hydrogen overpotential and protection against pitting corrosion during potentiostatic polarization tests at the cathode potential of a fuel cell.
Peukert Generalized Equations Applicability with Due Consideration of Internal Resistance of Automotive-Grade Lithium-Ion Batteries for Their Capacity Evaluation
Nataliya Yazvinskaya, Mikhail Lipkin, Nikolay Galushkin, Dmitriy Galushkin
Energies, 2022
In this paper, the applicability of the Peukert equation and its generalizations were investigated for capacity evaluation of automotive-grade lithium-ion batteries. It is proved that the classical Peukert equation is applicable within the range of the discharge currents from 0.2Cn to 2Cn (Cn is the nominal battery capacity). As a rule, the operating currents of many automotive-grade lithium-ion batteries are exactly within this range of the discharge currents. That is why, successfully, the classical Peukert equation is used in many analytical models developed for these batteries. The generalized Peukert equation C = Cm/(1 + (i/i0)n) is applicable within the discharge currents range from zero to approximately 10Cn. All kinds of operating discharge currents (including both very small ones and powerful short-term bursts) fall into this discharge currents range. The modified Peukert equation C = Cm(1 − i/i1)/((1 − i/i1) + (i/i0)n) is applicable at any discharge currents. This equation takes into account the battery’s internal resistance and has the smallest error of experimental data approximation. That is why the discussed modified Peukert equation is most preferable for use in analytical models of automotive-grade lithium-ion batteries. The paper shows that all the parameters of the generalized Peukert equations have a clear electrochemical meaning in contrast to the classical Peukert equation, where all the parameters are just empirical constants.
Research of Nanomaterials as Electrodes for Electrochemical Energy Storage
Nataliya N. Yazvinskaya, Mikhail S. Lipkin, Nikolay E. Galushkin, Dmitriy N. Galushkin
Molecules, 2022
This paper has experimentally proved that hydrogen accumulates in large quantities in metal-ceramic and pocket electrodes of alkaline batteries during their operation. Hydrogen accumulates in the electrodes in an atomic form. After the release of hydrogen from the electrodes, a powerful exothermic reaction of atomic hydrogen recombination with a large energy release occurs. This exothermic reaction is the cause of thermal runaway in alkaline batteries. For the KSL-15 battery, the gravimetric capacity of sintered nickel matrix of the oxide-nickel electrode, as hydrogen storage, is 20.2 wt%, and cadmium electrode is 11.5 wt%. The stored energy density in the metal-ceramic matrix of the oxide-nickel electrode of the battery KSL-15 is 44 kJ/g, and in the cadmium electrode it is 25 kJ/g. The similar values for the KPL-14 battery are as follows. The gravimetric capacity of the active substance of the pocket oxide-nickel electrode, as a hydrogen storage, is 22 wt%, and the cadmium electrode is 16.9 wt%. The density of the stored energy in the active substance oxide-nickel electrode is 48 kJ/g, and in the active substance of the cadmium electrode it is 36.8 kJ/g. The obtained results of the accumulation of hydrogen energy in the electrodes by the electrochemical method are three times higher than any previously obtained results using the traditional thermochemical method.
Dependence Study of Peukert’s Statistical Equation Parameters on Temperature for Nickel-Cadmium Batteries
Nataliya N. Yazvinskaya, Mikhail S. Lipkin, Nikolay E. Galushkin, Dmitriy N. Galushkin
International Journal of Electrochemical Science, 2022
A brief overview of electrochromic materials and related devices: A nanostructured materials perspective
Aleksei Viktorovich Shchegolkov, Sung-Hwan Jang, Alexandr Viktorovich Shchegolkov, Yuri Viktorovich Rodionov, Anna Olegovna Sukhova, Mikhail Semenovich Lipkin
Nanomaterials, 2021
Synthesis and Study of Cathode Materials Based on Carbon Nanotubes for Lithium-Ion Batteries
A. V. Shchegolkov, F. F. Komarov, M. S. Lipkin, O. V. Milchanin, I. D. Parfimovich, A. V. Shchegolkov, A. V. Semenkova, A. V. Velichko, K. D. Chebotov, V. A. Nokhaeva
Inorganic Materials Applied Research, 2021
Mechanism of the platinum nanoparticles formation under conditions of nonstationary electrolysis
Alexandra B. Kuriganova, Mikhail S. Lipkin, Nina V. Smirnova
Mendeleev Communications, 2021
Studies on the Reversibility of Electrolytic Tin Powder Obtained from an Ionic Liquid
M. S. Lipkin, N. I. Yalyushev, V. M. Lipkin, M. A. Burakov, A. V. Semenkova, D. N. Kuznetsov, R. M. Bachayev, V. V. Novoselov
Inorganic Materials Applied Research, 2021
Effect of current density distribution in the zinc plating process
Solid State Phenomena, 2021
Synthesis and functionalization of carbon nanotubes for supercapacitor electrodes
Alexander V. Shchegolkov, Elena A. Burakova, Tatyana P. Dyachkova, Natalia V. Orlova, Fadej F. Komarov, Mikhail S. Lipkin
Chemchemtech, 2020
The Influence of Stabilizer on the Formation and Tribotechnical Properties of Cu Nanoparticles
A. A. Kuzharov, A. A. Milov, Yu. S. Gerasina, I. Yu. Neverov, M. S. Lipkin, V. M. Lipkin, A. S. Kolomiitsev, A. A. Fedotov, M. A. Soldatov, A. V. Soldatov
Protection of Metals and Physical Chemistry of Surfaces, 2019
Corrosion Monitoring of Pipelines of Heat-Supply Systems Based on Gravimetric and Electrochemical Methods of Analysis
T. V. Kozlova, S. M. Lipkin, T. V. Lipkina, M. S. Lipkin, V. P. Breslavets, N. V. Shishka, A. V. Ul’yanov
Protection of Metals and Physical Chemistry of Surfaces, 2017
The mechanism of water-soluble polymer Additives and parameters of the pulse electrolysis effect on the size distribution of the electrolytic copper powder
V.M. Lipkin, M.S. Lipkin, V.I. Lachin
Materials Science Forum, 2016
Effect of substrate nature and electrolysis modes on ultramicron and nanosized electrolytic powders formation regularities
V.M. Lipkin, Y.M. Berezhnoi, M.S. Lipkin
Materials Science Forum, 2016
Green tribology: Disposal and recycling of waste Ni–Cd batteries to produce functional tribological materials
A. S. Kuzharov, M. S. Lipkin, A. A. Kuzharov, V. M. Lipkin, Kh. Nguen, V. G. Shishka, E. A. Rybalko, N. A. Lytkin, A. S. Misharev, F. R. Tulaeva, A. I. Gaidar
Journal of Friction and Wear, 2015
Composite electrode material based on cobalt-vanadium oxide CoV3O8 and oxide compounds of molybdenum
Zh. I. Bespalova, A. V. Khramenkova, M. A. Evstigneeva, S. M. Lipkin, M. S. Lipkin
Russian Journal of Applied Chemistry, 2014
Nondestructive carbon content express-control in steels and alloys
Andrey V. Sedov, Mikhail S. Lipkin, Semen M. Lipkin, Dmitry A. Onyshko, Nikolay A. Lytkin, Natalya V. Rarova
Aip Conference Proceedings, 2014
Potential step study of intercalation processes
Yuriy Y. Gerasimenko, Svetlana V. Kucherenko, Semen M. Lipkin, Mikhail Semenovich Lipkin
Ecs Transactions, 2013
Restoration of Cu-selective electrodes
V. Ya. Khentov, V. V. Semchenko, T. V. Lipkina, M. S. Lipkin, L. N. Velikanova
Russian Journal of Applied Chemistry, 2010
Study of the composition of titanium anode with electrocatalytic coat based on cobalt, manganese, and nickel oxides
V. V. Ivanov, Zh. I. Bespalova, I. V. Smirnitskaya, M. S. Lipkin, Yu. D. Kudryavtsev
Russian Journal of Applied Chemistry, 2010
Composite coatings based on copper oxides electrodeposited from solutions and on polymers
Zh. I. Bespalova, Yu. A. Lovpache, M. S. Lipkin, L. G. Miroshnichenko, I. A. Pyaterko, Yu. D. Kudryavtsev
Russian Journal of Applied Chemistry, 2006
Bimetallic lithium corrosion in the propylene carbonate electrolyte
Zashchita Metallov, 1995
Synthesis of sulfide cathodic materials and study of their physicochemical properties and electrochemical activity
V.A. Dusheiko, M.S. Lipkin
Journal of Power Sources, 1995

Korbova Ekaterina

RESEARCH, TEACHING, or OTHER INTERESTS

Scopus Publications

Publications