?
Thermoelements from antimony- and bismuth-chalcogenide alloys
Semiconductors. 2017. Vol. 51. No. 8. P. 986-988.
V.A. Dudarev, Ivanova L. D., Nikhezina I. Y., Granatkina Y. V., Kichik S. A., Mel’nikov A. A.
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 are estimated. The modules
are produced and the experimental and calculated properties
comparison is conducted.
Language:
English
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
Титова Т. С., Yurova P., Кулешова В. А. et al., Мембраны и мембранные технологии 2021 Т. 11 № 6 С. 460-468
MF-4SC membranes have been modified by polyaniline (PANI) with the oxidative polymerization method. The influence of the method of obtaining hybrid membranes and the content of PANI in them on the value of IEC, water uptake, and transport properties have been investigated. The characteristics of DP-sensors (DP is Donnan potential) based on the obtained membranes ...
Added: February 3, 2022
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
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
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
Novikova S., Ильин А. Б., Грызлов Д. Ю. et al., Неорганические материалы 2022 Т. 58 № 8 С. 852-860
С помощью метода Печини синтезированы композиты на основе LiFePO4 со структурой оливина с углеродным покрытием. Полученные материалы аттестованы с помощью рентгенофазового анализа, сканирующей электронной микроскопии, термогравиметрического анализа и спектроскопии комбинационного рассеяния. Оптимизирован процесс термической обработки прекурсора LiFePO4. В результате
получен LiFePO4 со структурой оливина с размером первичных частиц ~30 нм. Добавление к композиту
0.2 мас. % серебра ...
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
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
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
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
Ignatenko V. Y., Anokhina T. S., Ilyin S. O. et al., Polymer Science - Series A 2020 Vol. 62 No. 3 P. 292-299
Microfiltration membranes have been obtained from polymethylpentene by phase separation of its dioctyl sebacate solutions under cooling. The dissolution of the polymer was carried out at its melting point followed by formation of membrane precursors in the form of films from the resulting solution, which were then cooled and washed with acetone to remove the ...
Added: January 29, 2023
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
Agafonova E. E., Tepliakova M. M., Balakirev D. O. et al., Solar Energy Materials and Solar Cells 2023 Vol. 252 Article 112168
Implementation of hole-transport material is a key to increasing the efficiency in perovskite solar cells. In this work, we present a systematic screening of 14 dendrimer materials studied in four groups depending on the central core: triphenylamines (TPA), triazatruxenes (TAT), and quinolizino acridines (QA). Additionally, materials contain conjugated side chains of different lengths provided by ...
Added: December 21, 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
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
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
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
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
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
Tikhomirova K., Tantardini C., Sukhanova E. et al., The Journal of Physical Chemistry Letters 2020 No. 11 P. 3821-3827
NaCl is one of the simplest compounds and was thought to be well-understood, and yet, unexpected complexities related to it were uncovered at high pressure and in low-dimensional states. Here, exotic hexagonal NaCl thin films on the (110) diamond surface were crystallized in the experiment following a theoretical prediction based on ab initio evolutionary algorithm USPEX. State-of-the-art ...
Added: May 8, 2020
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
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
Manin A., Golubenko D., Novikova S. et al., Membranes 2023 Vol. 13 No. 7 Article 624
The possibility of targeted change of the properties of ion exchange membranes by incorporation
of various nanoparticles into the membranes is attracting the attention of many research
groups. Here we studied for the first time the influence of cerium phosphate nanoparticles on
the physicochemical and transport properties of commercial anion exchange membranes based
on quaternary ammonium-functionalized polystyrenes, such as ...
Added: July 26, 2023