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Effects of carbon coating from sucrose and PVDF on electrochemical performance of Li4Ti5O12/C composites in different potential ranges
Journal of Solid State Electrochemistry. 2018. Vol. 22. No. 9. P. 2631–2639.
The carbon coated nanoflower-like Li4Ti5O12/C composites were prepared via hydrothermal method followed by surface modification using sucrose or polyvinylidene fluoride (PVDF) as carbon sources. X-ray diffraction, SEM, TEM, Raman spectroscopy, TGA, and the electrochemical measurements were used for the materials characterization. Such modification leads to the formation of a high-conductive carbon coating. In the case of polyvinylidene fluoride use, fluorination of Li4Ti5O12 surface takes place also. As a result, electrochemical performance of the obtained composites is improved. In the potential range of 1–3 V, Li4Ti5O12, Li4Ti5O12/CPVDF, and Li4Ti5O12/Csucrose exhibit, respectively, the discharge capacities of 142.5, 154.3, and 170.4 mAh/g at a current of 20 mA/g and 57.2, 82.1, and 89.3mAh/g at a current of 3200 mA/g. When cycled in a potential range of 0.01–3 V, the discharge capacity of Li4Ti5O12/CPVDF increases up to 252 mAh/g at 20 mA/g.
Makarov D. M., Kalikin N., Fashchevsky K. A. et al., Electrochimica Acta 2026 Vol. 579 Article 150159
Machine learning (ML) has become a powerful tool for accelerating the development of carbon-based supercapacitors;
however, most published models assume that a single predictive framework can describe both conventional
porous carbons and hybrid carbon electrodes. Here, we test this assumption using a comprehensive
benchmark dataset and an extended literature-curated dataset enriched with synthesis- and electrolyte-related
descriptors. Three ML algorithms ...
Added: October 13, 2026
Shi R., Yu Y., Chibisov A., International Journal of Hydrogen Energy 2025 Vol. 107 P. 52–62
Cyanide containing wastewater can cause livestock death and reduce agricultural production and electrochemical reduction of cyanide (CNRR) is a promising way to eliminate its harm and turn waste into valuable products. However, the reaction mechanism and function of electrocatalysts for CNRR have not been fully understood yet. Herein we identify a two-dimensional (2D) conductive copper-organic ...
Added: October 11, 2026
Zhukov A., Chen F., Zeng Y. et al., Nanoscale 2026 Vol. 18 No. 36 P. 19223–19253
Colloidal semiconductor nanocrystals have emerged as promising materials for next-generation light-emitting diodes (LEDs) owing to their solution processability, tunable emission wavelengths, narrow emission linewidths, and high photoluminescence quantum yields. Among them, anisotropic nanocrystals, including one-dimensional nanorods (NRs) and two-dimensional nanoplatelets (NPLs), offer additional opportunities for controlling transition dipole moment orientation and light out-coupling efficiency. These ...
Added: October 2, 2026
Мальцева В. Е., Ananyev I., Milevskii N. et al., Molecular Systems Design and Engineering 2026 Vol. 11 No. 7 P. 691–704
The use of hydrophobic deep eutectic solvents (DESs) as extractants for metal ion separation is largely due to the ease of their preparation and the possibility of modifying them depending on the composition of the metal mixture to be separated. However, the most common approach to DES modification involves the replacement of the extractant, while ...
Added: October 2, 2026
Мальцева В. Е., Ananyev I., Golubev A. V. et al., Russian Journal of Inorganic Chemistry 2026 Vol. 71 P. 724–736
Two voluminous polymer silver(I) salts of perchlorinated dodecoborate clusters, {[(Me2CO)Ag(μ-Me2CO)2Ag(Me2CO)][μ-B12Cl12]}n (1) and {[DMFAg(μ-DMF)2AgDMF][μ-B12Cl12]}n (2) were synthesized. The 35Cl nuclear quadrupole resonance (NQR) spectroscopy supplemented with the X-ray diffraction data was applied for identifying and analyzing noncovalent interactions Cl···X in these salts. Whereas in X-ray diffraction, noncovalent interactions are associated with the presence of the shortened ...
Added: October 2, 2026
Мальцева В. Е., Rozhkov A., Ananyev I. et al., Inorganic Chemistry 2026 Vol. 65 No. 22 P. 12484–12496
Despite the well-established importance of chalcogen bonding in crystal engineering and supramolecular chemistry, experimental charge density data for TeII-centered chalcogen bonds have remained entirely absent, leaving the electronic nature of these interactions uncharacterized at the level of directly measured electron density. Here, we report the first high-resolution X-ray diffraction (HRXRD) study of TeII-centered chalcogen bonds, ...
Added: October 2, 2026
Ostovari Moghaddam A., Mehrabi-Kalajahi S., Solizoda I. A. et al., Metals and Materials International 2026 P. 1–9
Off-stoichiometric boron-doped chemically complex intermetallic alloys (CCIMAs) have recently emerged as a new avenue for overcoming the low temperature brittleness of ordered superlattices. However, their behavior at high temperatures remains unexplored. In this study, a novel (Ni39.6Co29.3Cr10Al15.8Ta3.3Nb2)98.5B1.5 CCIMA was prepared and its oxidation resistance over a wide temperature range (500 °C–950 °C) was studied. The ...
Added: October 1, 2026
Kashpurovich I., Oleynichenko A., Stegailov V., Supercomputing Frontiers and Innovations 2026 Vol. 13 No. 1 P. 52–73
We report a high-performance implementation of the resolution-of-the-identity Hartree–Fock method that fully exploits the permutational symmetry of three-center electron repulsion integrals (ERI). The present implementation adopts a hybrid MPI+OpenMP parallelization strategy. Two different algorithmic approaches (with and without the pre-transformation of ERIs) are compared. A custom data layout introduced previously is employed. Designed to efficiently ...
Added: September 28, 2026
Li Y., Han J., Zaman N. et al., ACS Applied Materials & Interfaces 2026 Vol. 18 No. 39 P. 54241–54251
The development of lead sulfide (PbS) quantum dot (QD) photodetectors for short-wave infrared (SWIR) applications has been fundamentally limited by the thermodynamic instability of large PbS QD facets, which leads to aggregation and epitaxial fusion. In this work, robust thermodynamic stabilization was achieved by introducing methylammonium chloride (MACl) in PbS QD surface passivation, as validated ...
Added: September 26, 2026
S. A. Novikova, Karpov M. S., A. B. Yaroslavtsev, Russian Journal of Electrochemistry 2025 Vol. 61 No. 12 P. 817–843
The state-of-the-art in investigations in the field of cathode materials based on lithium–cobalt double phosphate for lithium-ion rechargeable batteries is surveyed. The specific features of the LiCoPO4 crystal structure, the transfer rate of charge carriers, the main synthetic methods of preparation, and the electrochemical characteristics of LiCoPO4-based cathodes such as discharge capacity, charge–discharge rate, and cyclability ...
Added: February 17, 2026
Gavrilov S., Gavrilin I., Martynova I. et al., Batteries 2023 Vol. 9 No. 9 Article 445
Germanium–cobalt–indium nanostructures were synthesized via cathodic electrodeposition
from aqueous complex solutions of Ge (IV) and Co (II) with drop-like indium crystallization centers.
This approach features simplicity, avoids heating and allows using cheaper GeO2 instead of pure
Ge as starting material. Further, in this case, target nanostructures grow directly upon the substrate.
Various analytical methods (scanning electron microscopy, transmission electron ...
Added: January 25, 2024
Irina Stenina, Polina Minakova, Tatiana Kulova et al., Batteries 2022 Vol. 8 No. 9 Article 111
The influence of different conductive additives (carbon nanofibers (CNFs), carbonnanoplatelets, and pyrolytic carbon from sucrose (Sucr) or polyvinylidene fluoride) on the morphology, electron conductivity, and electrochemical performance of LiFePO4-based cathodes wasinvestigated to develop the most efficient strategy for the fabrication of high-rate cathodes. Pyrolyticcarbon effectively prevents the growth of LiFePO4 grains and provides contact between ...
Added: January 26, 2023
Lebedev E., Gavrilin I., Kudryashova Y. et al., Batteries 2022 Vol. 8 No. 9 Article 109
Layers of germanium (Ge) microrods with a core–shell structure on titanium foils weregrown by a metal-assisted electrochemical reduction of germanium oxide in aqueous electrolytes.The structural properties and composition of the germanium microrods were studied by means ofscanning and transmission electron microscopy. Electrochemical studies of germanium nanowireswere carried out by impedance spectroscopy and cyclic voltammetry. The ...
Added: January 21, 2023
Tatiana L. Kulova, Skundin A., Gavrilin I. et al., Batteries 2022 Vol. 8 No. 8 Article 98
Nanostructure composites Ge-Co-P with brutto-composition CoGe2P0.1, or CoGe2@GePwere manufactured via electrolysis of aqueous electrolyte. Such composites are able to reversibleinsertion of lithium and sodium with specific capacities up to 855 and 425 mAh/g, respectively. Themain advantage of the composites consists in their excellent cycleability. ...
Added: January 21, 2023
Irina Stenina, Safikanov D., Minakova Polina et al., Batteries 2022 Vol. 8 No. 12 Article 256
The effect of different nitrogen-doped carbon additives (carbon coating from polyaniline,
N-doped carbon nanotubes, and N-doped carbon nanoparticles) on electrochemical performance
of nanocomposites based on the olivine-type LiFePO4 was investigated. Prepared materials were
characterized by XRD, SEM, TGA-MS, CHNS-analysis, IR-, Raman, and impedance spectroscopies.
Polyaniline deposition on the LiFePO4 precursor with following annealing lead to the formation of
a LiFePO4/C ...
Added: November 28, 2022
Voropaeva D., Ekaterina Yu. Safronova, Svetlana A. Novikova et al., Mendeleev Communications 2022 Vol. 32 No. 3 P. 287–297
Moving towards carbon-free energy and global commercialization of electric vehicles stimulated extensive development in the field of lithium-ion batteries (LIBs), and to date, many scientific and technological advances have been achieved. The number of research works devoted to developing high-capacity and stable materials for lithiumion and lithium metal batteries (LMBs) is constantly rising. This review ...
Added: November 25, 2022
Tatiana L. Kulova, Skundin A., Gavrilin I. M. et al., Batteries 2022 Vol. 8 No. 8 Article 98
Nanostructure composites Ge-Co-P with brutto-composition CoGe2P0.1, or CoGe2@GeP were manufactured via electrolysis of aqueous electrolyte. Such composites are able to reversible insertion of lithium and sodium with specific capacities up to 855 and 425 mAh/g, respectively. The main advantage of the composites consists in their excellent cycleability. ...
Added: November 25, 2022
Yaroslavtsev Andrey B, Stenina Irina A, Surface Innovations 2021 Vol. 9 P. 92–110
Lithium-ion batteries have become one of the most popular energy sources for portable devices, cordless tools, electric vehicles and so on. Their operating parameters are mostly determined by the properties of the anode material and, to a greater extent, the cathode material. Even the most promising electrode materials have disadvantages, such as large changes in ...
Added: October 19, 2021
Stenina Irina A, Shaydullin R., Desyatov A. et al., Electrochimica Acta 2020 Vol. 364 Article 137330
The composite nanomaterials based on hydrothermally synthesized Li4Ti5O12 and carbon
nanotubes (CNTs) or carbon nanoflakes, including N-doped ones were prepared. The composites
were investigated by X-ray powder diffraction, TEM, SEM, Raman spectroscopy, BET, dcmeasurements,
galvanostatic charge-discharge tests, cyclic voltammetry and electrochemical
impedance spectroscopy. Carbon nanomaterial addition provides the formation of a highly
conductive 3D network leading to a significant increase ...
Added: October 19, 2021
Voropaeva D. Y., Novikova S. A., Kulova T. L. et al., Ionics 2018 Vol. 24 No. 6 P. 1685–1692
The Nafion-117 membranes in the Li+ form with pore-intercalated aprotonic organic solvents were prepared. The prepared materials were characterized by IR, impedance, and 7Li NMR spectroscopy. The solvent uptake of the membranes is shown to be controlled by the composition of organic solvents and their mixtures as well as by the conditions of the preliminary treatment of ...
Added: January 10, 2019