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Supercapacitors with carbon electrodes. Energy efficiency: modeling and experimental verification
Journal of Solid State Electrochemistry. 2015. P. 1-9.
Volfkovich Y., Bograchev D., Rychagov A. Y., Sosenkin V. E., Chaika M. Y.
In press
Chernik V., Bondarenko G., Gaidar A. et al., Известия высших учебных заведений. Физика 2008 Т. 51 № 11/2 С. 6-9
Представлены результаты измерения коэффициентов химического распыления углеситалла УСБ-15, пироуглерода ПГИ, пирографита УПВ-1, экспонированных в ускоренных частично диссоциированных потоках кислородной плазмы с энергией ионов 90 эВ. Для исследованных нелегированных материалов УПВ-1 и ПГИ коэффициент химического распыления не зависит от степени совершенства кристаллической решетки и составляет 0,94-0,96 атомов/атом. При легировании бором коэффициент распыления углеситалла УСБ-15 с 8% ...
Added: January 4, 2013
Volfkovich Y., Bograchev D., Mikhalin A. A. et al., Journal of Solid State Electrochemistry 2014 Vol. 18 No. 5 P. 1351-1363
Electrochemical behavior of electrodes on the basis of CH900-20 activated carbon (AC) cloth has been studied in concentrated sulfuric acid solution. Cyclic voltammetric curves have been studied in the reversibility range (from 0.1 to 0.9 V RHE) and in the deep cathodic charging potential range (from –0.8 to 1 V RHE). It has been shown that electric ...
Added: March 16, 2015
Vol’fkovich Y., Mikhalin A. A., Bograchev D. et al., Russian Journal of Electrochemistry 2012 Vol. 48 No. 4 P. 424-433
Electrochemical properties of electrodes on the basis of CH900-20 activated carbon
(AC) cloth were studied in concentrated H 2 SO 4 solutions in a wide range of potentials
from− 0.8 to+ 1 V RHE. Cyclic voltammetric curves measured in two ranges of potentials
were analyzed: in the reversibility range (from 0.1 to 0.9 V) and in the deep ...
Added: February 27, 2015
Chernik V., Акишин А. И., Bondarenko G. et al., Известия РАН. Серия физическая 2008 Т. 72 № 7 С. 1015-1017
С помощью растровой электронной микроскопии исследован рельеф поверхности образцов углеситалла УСБ-15, пироуглерода ПГИ, пирографита УПВ-1 и полиимида ПМ-1Э, экспонированных в ускоренных потоках кислородной плазмы. Травление поверхности быстрыми частицами кислорода формирует структуру из выступов в форме конусов/столбиков. По мере увеличения потери массы материала размеры образований растут и характер рельефа видоизменяется. При травлении углеродных материалов наблюдается обогащение ...
Added: January 4, 2013
Logvenkov S. A., Биофизика 2011 Т. 56 № 3 С. 512-519
The continuum model of radial mass transfer in plant roots we developed previously is used for processing the nonstationary experiments aimed at the determination of the root hydraulic conductivity. It is shown that in contrast to compartmental models our model allows to describe the observed shape of the relaxation curve and to obtain segments with ...
Added: November 24, 2012
Chernik V., Акишин А. И., Novikov L. et al., Перспективные материалы 2009 № 4 С. 22-27
Исследовано химическое распыление различных типов углеродных и графитовых материалов в потоках кислородной плазмы с энергией частиц менее 100 эВ. Для нелегированных материалов зависимость коэффициента химического распыления от структуры выражено слабо. Коэффициент распыления легированных бором материалов снижается по мере степени его легирования. С помощью растрового электронного микроскопа исследован рельеф поверхности ряда углеродных материалов. ...
Added: October 14, 2012
Nimon V. Y., Visco S., De Jonghe L. et al., ECS Electrochemistry Letters 2014 Vol. 2 No. 4 P. A33-A35
We performed mathematical modeling and experimental study of porous carbon air cathodes in Li-O2 cells having a non-aqueous electrolyte based on dimethylformamide (DMF). Using the method of standard contact porosimetry, we characterized the porous structure of undischarged, partially discharged, and fully discharged Ketjenblack carbon black-based air cathodes and determined that deposition of solid discharge product occurs ...
Added: March 16, 2015
М. : Институт прикладной математики им. М.В. Келдыша РАН, 2016
Содержит материалы, представленные к рассмотрению на научно-практический семинар “Новые информационные технологии в автоматизированных системах”.
Представляет интерес для научных сотрудников, преподавателей, аспирантов и студентов, работающих по указанным научным направлениям. ...
Added: April 15, 2016
Воронеж : Элит, 2012
В трудах XIII Всероссийской научно-технической конференции и школы молодых ученых, аспирантов и студентов отражены вопросы управления космическими аппаратами, технологической механики и механики деформируемого твердого тела, тепломассообмена, математического моделирования, автоматизированного проектирования и управления процессами разработки и производства летательных аппаратов и двигательных установок авиационной и космической техники. Опубликованные материалы соответствуют научному направлению "Наукоемкие технологии в машиностроении, авиастроении, ...
Added: February 9, 2013
Novikov L., Voronina E. N., Galanina L. I. et al., Physics of Atomic Nuclei 2017 Vol. 80 No. 4 P. 666-678
The brief history of the development of investigations at the Skobeltsyn Institute of Nuclear Physics, Moscow State University (SINP MSU) in the field of space materials science is outlined. A generalized scheme of a numerical simulation of the radiation impact on spacecraft materials and elements of spacecraft equipment is examined. The results obtained by solving ...
Added: January 19, 2018
Visco S., Nimon V. Y., Petrov A. et al., Journal of Solid State Electrochemistry 2014 Vol. 18 No. 5 P. 1443-1456
Abstract The extremely high theoretical energy density of the lithium-oxygen couple makes it very attractive for next-generation battery development. However, there are a number of challenging technical hurdles that must be addressed for Li-Air batteries to become a commercial reality. In this article, we demonstrate how the invention of water-stable, solid electrolyte-protected lithium electrodes solves ...
Added: March 16, 2015
Zakhariev I., Aksenov S. A., Logashina I. V., Letters on Materials 2017 № 1 С. 49-54
The paper is oriented toward the problem of determination of rheological characteristics of a material by free bulging testing. This information about the material behavior is used for design of gas forming technologies for production of complex shell parts used in aerospace industry. Realization of such technologies requires pressure forming regimes which can be calculated ...
Added: March 14, 2017
М. : ИКИ РАН, 2015
This issue is the collection of the papers based on the talks presented at the extended workshop “Methods of simulations on supercomputers”, which was held at 21–3 April 2014, in Tarusa hotel Interkosmos of the RAS Space Research Institute. It is the workshop in the series of extended workshops, devoted to the computer technologies in ...
Added: February 18, 2016
Bograchev D., Volfkovich Y., Dubasova V. et al., Электрохимия 2013 Т. 49 № 2 С. 115-123
A model of the lithium ion battery is developed which takes into account
intercalation and extraction of lithium ions in the active mass of negative and positive
electrodes, the dependences of equilibrium electrode potentials on the concentration of
intercalated lithium, the ion transfer in pores of electrodes and the separator, the kinetics of
electrode reactions, and the electric double ...
Added: March 16, 2015
Antipov A., Seleznev V., Vakhtomin Y. et al., IOP Conference Series: Materials Science and Engineering (MSE) 2020 Vol. 781 No. 1 P. 012011-1-012011-5
Spectral characteristics of WSi and NbN superconducting single-photon detectors with different surface resistance and width of nanowire strips have been investigated in the wavelength range of 1.3-2.5 µm. WSi structures with narrower strips demonstrated better performance for detection of single photons in longer wavelength range. The difference in normalized photon count rate for such structures ...
Added: December 10, 2020
M. : Faculty of Physics, MSU, 2017
The Low Temperature Physics Conference is an international event held every three years, under the auspices of the IUPAP through its Commission C5 on Low Temperature Physics. The aim of these conferences is to exchange information and views among the members of the international scientific community in the general field of Low Temperature Physics. It ...
Added: October 1, 2017
Kalmykov A., Melentiev P., Balykin V., Laser Physics Letters 2020 Vol. 17 No. 4 P. 045901
In this paper we present measurements and comparison of SPP propagation length at the practically important telecom wavelength (1560 nm) as well as in the near-infrared and visible spectral ranges. The measurements were carried out for plane SPP waves excited on Ag film surface using optical microscopy of SPP waves in the far field. We ...
Added: January 15, 2021
Казанцев Д. В., Казанцева Е. А., Кузнецов Е. В. et al., Известия РАН. Серия физическая 2017 Т. 81 № 12 С. 1709-1714
Описаны принципы работы безапертурного сканирующего микроскопа ближнего оптического поля (ASNOM). Зондом в приборе служит металлизированная игла атомно-силового микроскопа, и оптическое взаимодействие с объектами на поверхности локализовано вблизи ее острия размером в несколько нанометров. Тело иглы имеет длину в несколько микрон, и это обеспечивает высокую эффективность ее электромагнитного взаимодействия с падающими на нее извне и излучаемыми ...
Added: December 6, 2020
Boldyrev K., Романов А., Хаула Е. et al., Journal of the American Ceramic Society 2019 Vol. 102 No. 5 P. 2745-2751
Single crystal of TlCl was doped with NIR photoluminescent univalent bismuth cations by prolonged immersion in liquid bismuth metal. The ion exchange Tl+ + Bi0 ↔ Tl0 + Bi+ at the crystal surface with subsequent Bi+ migration to the bulk are expected to drive the doping process. Contrary with Bi‐doped TlCl crystals, grown by Bridgman method, the ion exchange does ...
Added: February 8, 2019
Budkov Y., Kolesnikov A. L., Polymer Science - Series C 2018 Vol. 60 No. Supplement 1 P. 148-159
Theoretical models of the conformational behavior of flexible polymer chains in mixed solvents enunciated in the world literature during the last decade are critically reviewed. Models describing different mechanisms of coil-to-globule transitions in a good solvent induced by cosolvent addition are highlighted. Special attention is given to the analysis of theoretical approaches to describing the ...
Added: November 30, 2018
Bodrova A., Osinsky A., Brilliantov N., Scientific Reports 2020 Vol. 10 Article 693
We study analytically and numerically the distribution of granular temperatures in granular mixtures for
different dissipation mechanisms of inelastic inter-particle collisions. Both driven and force-free systems
are analyzed. We demonstrate that the simplified model of a constant restitution coefficient fails to
predict even qualitatively a granular temperature distribution in a homogeneous cooling state. At the
same time we reveal ...
Added: February 25, 2020
Демин А. С., Масляев С. А., Пименов В. Н. et al., Физика и химия обработки материалов 2017 № 6 С. 5-17
Изучено влияние облучения в установке Плазменный фокус PF-1000 экстремальными энергетическими потоками быстрых ионов дейтерия (Ei≈100 кэВ, плотность мощности qi≈1011-1012 Вт/см2, длительность импульса ti≈10-50 нс) и дейтериевой плазмы (qpl≈109- 1010 Вт/см2, tpl≈50-100 нс) на структуру поверхностного слоя молибденовой пластины с учетом его плавления, частичного испарения и закалки расплава. На облученной поверхности обнаружено образование капельных структур, пор, ...
Added: December 25, 2017
Kuzmichev S. A., Kuzmicheva T. E., Tchesnokov S. N. et al., Journal of Superconductivity and Novel Magnetism 2016 Vol. 29 No. 4 P. 1111-1116
We present temperature dependences of the large and the small superconducting gaps measured directly by SnS-Andreev spectroscopy in various Fe-based superconductors and MgB2. The experimental L,S(T ) are wellfitted with a two-gap model based on Moskalenko and Suhl system of equations (supplemented with a BCS integral renormalization). From the fitting procedure, we estimate the key ...
Added: March 19, 2016
Dziom V., Shuvaev A. V., Shchepetilnikov A. et al., Physical Review B: Condensed Matter and Materials Physics 2019 Vol. 99 No. 4 Article 045305
The integer quantum Hall effect is a well-studied phenomenon at frequencies below about 100 Hz. The plateaus in high-frequency Hall conductivity were experimentally proven to retain up to 33 GHz, but the behavior at higher frequencies has remained largely unexplored. Using continuous-wave terahertz spectroscopy, the complex Hall conductivity of GaAs/AlGaAs heterojunctions was studied in the ...
Added: December 11, 2020