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Binder-Free Ge-Co-P Anode Material for Lithium-Ion and Sodium-Ion Batteries
Batteries. 2022. Vol. 8. No. 8. Article 98.
Tatiana L. Kulova, Skundin A., Gavrilin I. M., Kudryashova Y., Martynova I., Svetlana A. Novikova
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.
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
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
Kudryashova Y., Gavrilin I., Tatiana L. Kulova et al., Mendeleev Communications 2023 Vol. 33 No. 3 P. 318-319
A new electrochemical system for sodium-ion batteries, sodium iron-manganese phosphate–germanium nanowires,
has been developed and tested. The laboratory batteries possessed an average discharge voltage of ~2.0 V and an
energy density based on the weight of active materials to 210 Wh kg–1. ...
Added: April 13, 2023
Salikov R., Trainov K., Platonov D. et al., Dyes and Pigments 2019 Vol. 161 P. 500-509
Two approaches for the synthesis of D-A chromophores containing arylhydrazonocyclopentadiene acceptor moieties were developed. The first approach includes the decarboxylative azo coupling reaction between penta(methoxycarbonyl)cyclopentadienyl potassium or sodium and aryldiazonium salts to give products containing four ester groups at the acceptor moiety. The second one includes the reaction of 1,3-dimethoxycarbonyl-4,5-diphenylcyclopentadienone with arylhydrazine hydrochlorides into arylhydrazonocyclopentadienes with two ester and ...
Added: October 14, 2020
Гусак Д. И., Journal of Power Sources 2024 Article 234257
Lithium-ion batteries are widely used in portable devices and electric vehicles, and their production grows continuously. Aging is the main reason for battery retirement, which causes substantial waste production and can potentially result in water or soil pollution. Capacity recovery of aged cells could become a great alternative to their recycling. In this work, we ...
Added: March 14, 2024
Ionov A. M., Ageeva T., Golubev D. et al., Macroheterocycles 2018 Vol. 11 No. 2 P. 155-161
Synthesis of bismuth complexes of etioporphyrin II, protoporphyrin IX dimethyl ester and three tetraphenylporphyrin derivatives in which iodine atom is an extraligand, was carried out. Obtained compounds were characterized by mass spectrometry, UV-vis, 1H NMR spectroscopy, and HPLC. The study of X-ray spectra showed that bismuth valence is +3. Bismuth atom coordinates four nitrogen atoms ...
Added: December 10, 2020
Ilyin S., Kostyuk A., Anokhina T. et al., International Journal of Molecular Sciences 2023 Vol. 24 No. 9 Article 8057
The weak point of ionic liquids is their high viscosity, limiting the maximum polymer concentration in the forming solutions. A low-viscous co-solvent can reduce viscosity, but cellulose has none. This study demonstrates that dimethyl sulfoxide (DMSO), being non-solvent for cellulose, can act as a nominal co-solvent to improve its processing into a nanofiltration membrane by ...
Added: January 30, 2024
Komarova A., Dmitry S. Perekalin, Organometallics 2023 Vol. 42 No. 13 P. 1433-1438
There is a common assumption that replacement of the classical catalyst based on rare and expensive noble metals by the catalysts based on earth-abundant metals will dramatically reduce the costs of organic synthesis. Herein we demonstrate that it may not be true, mainly because sophisticated organic substrates and modern reagents are often as expensive as ...
Added: August 11, 2023
Yaroslavtsev A. B., Novikova S., Voropaeva D. et al., Batteries 2022 Vol. 8 No. 10 Article 162
Polymer electrolyte based on Nafion-117 membranes in the Li+ form with intercalated
1,3-dioxolane-dimethoxyethane solvent mixtures (DOL-DME) has been obtained. The obtained electrolyte
Nafion-Li+-DOL-DME has been characterized by DSC analysis, IR- and impedance spectroscopy.
The solvent uptake of membrane in the DOL-DME mixture amounts to 1.9. Nafion-Li+-DOL-DME
is characterized by an ionic conductivity ~107 S cm1 at room temperature. The ...
Added: November 25, 2022
Mandal R., Barsu N., Garai B. et al., Chemical Communications 2021 Vol. 57 No. 91 P. 12167-12170
A new protocol is developed for the mono- and bis-ortho-C–H alkynylation of easily accessible benzamide derivatives using alkynyl bromides at room temperature by merging cobalt and photocatalysts. The diverse reactivity of various alkynyl bromides towards the C–H alkynylation and competing C–H/N–H bond annulation reactions has been demonstrated to give the corresponding products in good yields ...
Added: January 24, 2023
Yurova P., Стенина И. А., Yaroslavtsev A. B., Russian Journal of Electrochemistry 2020 Vol. 56 P. 528-532
Composite materials based on heterogeneous membranes MK-40 modified by a thin layer of homogeneous cation-exchange perfluorinated sulfo membrane MF-4SK doped with 2 and 5% ceria are prepared. The transport characteristics of these membranes in different ionic forms are studied. It is shown that the conductivity of ionic forms of membranes increases in the sequence Li+ ...
Added: November 29, 2020
Долгопрудный : МФТИ, 2021
Труды 63-й Всероссийской научной конференции МФТИ. Включены результаты оригинальных исследований студентов, аспирантов, преподавателей и научных сотрудников МФТИ и дружественных учебных и научных организаций. Статьи представляют интерес для специалистов, работающих в области радиотехники и компьютерных технологий ...
Added: October 29, 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
Gorbacheva S., Borisova Y., Makarova V. et al., Molecules 2023 Vol. 28 No. 3 Article 949
The low thermal conductivity of paraffin and other organic phase change materials limits their use in thermal energy storage devices. The introduction of components with a high thermal conductivity such as graphene into these materials leads to an increase in their thermal conductivity. In this work, we studied the use of inexpensive carbon fillers containing ...
Added: January 29, 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
Петрухина Н. Н., Безруков Н. П., Антонов С.В., Журнал прикладной химии 2021 Т. 94 № 3 С. 275-295
Materials-science aspects of the development of color road pavement (color asphalt concretes) and marking are considered. Kinds of binders used as a base for color asphalt concretes are characterized; these include dark petroleum bitumens, colorless polymer binders, and biobinders. The main requirements to colorless binders are formulated. The relationship between the composition and physicochemical, mechanical, ...
Added: January 29, 2023
Novikova S., Воропаева Д. Ю., Yaroslavtsev A. B., Неорганические материалы 2022 Т. 58 № 4 С. 351-366
Рассмотрены опубликованные в последнее десятилетие исследования в области создания аккумуляторов на основе систем натрий–сера, работоспособных при температуре окружающей среды
(низкотемпературные натрий-серные аккумуляторы (НСА)). Такие аккумуляторы отличаются от
распространенных в настоящее время литий-ионных или литий-серных аналогов меньшей стоимостью и доступностью исходных материалов. Одной из главных проблем на пути создания низкотемпературных НСА с высокой удельной энергоемкостью и длительным циклированием ...
Added: November 25, 2022
Ulyana M. Zavorotnaya, Privalov A., Wolter C. et al., Ionics 2023 Vol. 29 No. 9 P. 3609-3617
Proton diffusion in the сo-PNIS85/15 membrane was investigated in the temperature range from 200 K to 363 K at different water contents (4 ≤ l ≤ 21) using 1H SFG NMR diffusometry. At high hydration values, above the threshold value λ0 = 10.5, the ln(DNMR(1/T)) dependences show two different activation modes, separated by a crossover ...
Added: October 5, 2023
Larin S., Makarova V., Gorbacheva S. et al., Journal of Chemical Physics 2022 Vol. 157 No. 19 Article 194702
Adding carbon nanoparticles into organic phase change materials (PCMs) such as paraffins is a common way to enhance its thermal conductivity and to improve the efficiency of the heat storage devices. However, sedimentation stability of such blends can be low due to aggregation of aromatic carbon nanoparticles in the aliphatic paraffin environment. In this paper ...
Added: January 29, 2023
Trainov K., Salikov R., Luponosov Y. et al., Mendeleev Communications 2019 Vol. 29 No. 3 P. 304-306
First representatives of a novel class of compounds containing an electron-accepting hydrazonocyclopentadiene moiety, π-conjugated phenylene spacer, and electron-donating triphenylamine moiety have been synthesized. Investigation of their optical, electrochemical and photovoltaic properties revealed a high potential of the hydrazonocyclopentadiene acceptor moiety in the design of donor-acceptor compounds for organic photovoltaics. ...
Added: October 14, 2020
Маневич В. Е., Российский химико- техногогический университет им. Менделеева, 2012
В книге представлена информация по важнейшим эксплуатационным свойствам стекол, технологии их производства, перерабготки в изделия, методам разбраковки и контроля качкства. Авторы книги являются ведущими специалистами важнейших направлений науки о стекле, промышленной технологии производства материалов и изделий из стекла. ...
Added: October 2, 2022
Mankaev B., Serova V., Syroeshkin M. et al., European Journal of Inorganic Chemistry 2023 Vol. 26 No. 11 Article e202200690
A series of novel tetrylenes based on three 2,6-bis(2-hydroxyphenyl)pyridines has been obtained by the reaction of Lappert’s tetrylenes E[N(SiMe3)2]2 (E=Ge, Sn) with corresponding tridentate pyridine-linked phenol-based ligands. It was found that the structure of the ligand and the size of the atom of the group 14 element drastically affect the structure of the reaction product. ...
Added: February 14, 2024
Костюк А. В., Смирнова Н. М., Antonov S. V. et al., Высокомолекулярные соединения. Серия А 2021 Т. 63 № 3 С. 184-197
Polymer hot-melt adhesives are obtained on the basis of poly(ethylene-vinyl acetate), polyethylene wax, and aromatic (C9) hydrocarbon resins differing in the degree of hydrogenation of aromatic groups (from 0 to 37%). The content of poly(ethylene-vinyl acetate) is varied from 30 to 80%, and the concentration of other components of the adhesive is within 10–35%. The ...
Added: January 29, 2023
В.А. Дударев, Иванова Л. Д., Нихезина И. Ю. et al., Физика и техника полупроводников 2017 Т. 51 № 8 С. 1028-1030
Thermoelements for thermoelectric coolers from fine-crystalline
materials based on antimony and bismuth chalcogenide
solid solutions of p- and n-type conductivities, obtained by hot
pressing and extrusion from powders, made by melt spinning,
were studied. Calculations of modules’ properties were performed
in the range of 100−400K, taking into account temperature
dependencies of thermoelectric parameters of legs, and the parameters
of thermoelectric legs’ matching ...
Added: October 30, 2019