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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Пятнов, Максим Владимирович, Тимофеев, Иван Владимирович
Заглавие : Фотоэлектрохимическое расщепление воды наноструктурированным электродом и зеленая водородная энергетика
Место публикации : Фотоника. - 2022. - Т. 16, Вып. 2. - С. 116-125. - ISSN 1993-7296 (ISSN), DOI 10.22184/1993-7296.FRos.2022.16.2.116.125; Photonics Rus. - ISSN 2686-844X (eISSN)
Примечания : Библиогр.: 28. - Исследование выполнено за счет гранта Российского научного фонда и Красноярского краевого фонда поддержки научной и научно-технической деятельности № 22-22-20078, https://rscf.ru/project/22-22-20078
Аннотация: В статье описан перспективный способ получения водорода – фотоэлектрохимическое расщепление воды. Этот подход сочетает непосредственное использование солнечной энергии и низкую стоимость производства фотоэлектрохимических ячеек из широко распространенных на Земле полупроводниковых материалов. Последние достижения в конструировании таких ячеек включают наноструктурирование полупроводниковых электродов плазмонными материалами.This article describes a promising hydrogen formation method, namely the photoelectrochemical water splitting. This approach combines the direct use of solar energy and low production cost of photoelectrochemical cells using the widely used semiconductor materials. The latest advances in such cell design include nanostructuring of the semiconductor electrodes with plasmonic materials.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Grossman, Victoria G., Bazarova J. G., Molokeev M. S., Bazarov B. G.
Заглавие : Thallium ionic conductivity of new thallium indium hafnium molybdate ceramics
Коллективы : RFBRRussian Foundation for Basic Research (RFBR) [0339-2016-0007]; [18-08-00799]; [18-03-00557]
Место публикации : Ionics. - 2020. - Vol. 26. - P.6157-6165. - ISSN 0947-7047, DOI 10.1007/s11581-020-03739-7. - ISSN 1862-0760(eISSN)
Примечания : Cited References: 60. - This study was carried out within the state assignment of FASO of Russia (Theme No 0339-2016-0007) as well was supported by RFBR Grants 18-08-00799 and 18-03-00557
Предметные рубрики: POSITIVE ELECTRODE MATERIAL
CRYSTAL-STRUCTURE
TRIPLE MOLYBDATE
Аннотация: In the process of studying the system Tl2MoO4–In2(MoO4)3–Hf(MoO4)2, a new thallium indium hafnium molybdate was found. The crystal structure of the molybdate Tl5InHf(MoO4)6 was determined in the centrosymmetric space group R3¯c (a = 10.63893 (5) Å, c = 38.1447(3) Å; V = 3739.04 (4) Å3, Z = 6). The structure is a three-dimensional framework consisting of alternating (Hf,In)O6-octahedra connected by МоО4-tetrahedra. Each octahedron has common vertices with tetrahedra. The atoms arranged in this way form channels extended along with the a and b axes, in which thallium atoms are located. The conductivity behavior of Tl5InHf(MoO4)6 ceramics was studied in the temperature range from 300 to 870 K. The conductivity of the heavy cations of thallium is activated with increasing temperature.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Simunin M. M., Khartov S. V., Shiverskii A. V., Zyryanov V. Ya., Fadeev, Yu. V., Voronin A. S.
Заглавие : Structures based on graphitized nanotubulenes with a common electrode in a matrix of porous anodic alumina for the purpose of forming electrically switchable membranes
Коллективы : Russian Science Foundation [15-19-10017]
Место публикации : Tech. Phys. Lett.: MAIK Nauka-Interperiodica / Springer, 2015. - Vol. 41, Is. 11. - P.1047-1050. - ISSN 1063-7850, DOI 10.1134/S1063785015110103. - ISSN 1090-6533(eISSN)
Примечания : Cited References:20. - This work was supported financially by the Russian Science Foundation, project no. 15-19-10017
Предметные рубрики: POLYPEPTIDE BRUSH
ION-TRANSPORT
PERMEABILITY
POLYMER
PHOTOREGULATION
PERMEATION
ACID
Аннотация: A structure based on porous anodic alumina with through pores is synthesized. This structure may be of some interest in terms of fabricating electrically switchable membranes. Conducting tubulenes connected to a common input electrode are located in the pores of the structure. It is hypothesized that enhancement of the electric field nonuniformity associated with the indicated structure morphology should help raise the degree of ionic selectivity of the membrane and broaden the range of permissible concentrations of ions in the processed solution. An suggestion regarding the structure of synthesized tubulenes in the context of the problem of suppressing the physical sorption of ions on the pore surface and raising the hydrogen and oxygen reduction potentials relative to those of state-of-the-art field-switchable membranes is also made.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Grossman, Victoria G., Molokeev M. S., Bazarova, Jibzema G., Bazarov, Bair G., Sorokin, Nikolay, I
Заглавие : Structural, thermal and electrical studies of thallium-scandium-hafnium(zirconium) molybdates
Коллективы : Basic Project of BINM SB RAS [0273-2021-0008]; Government of the Russian Federation [075-15-2019-1886]
Место публикации : J. Solid State Chem. - 2022. - Vol. 307. - Ст.122832. - ISSN 0022-4596, DOI 10.1016/j.jssc.2021.122832. - ISSN 1095-726X(eISSN)
Примечания : Cited References: 56. - The work was supported by Basic Project of BINM SB RAS N degrees 0273-2021-0008. Research was conducted using equipment of the CCU BINM SB RAS. Structural analysis of materials in this study was partly sup-ported by the Research Grant No. 075-15-2019-1886 from the Government of the Russian Federation
Предметные рубрики: POSITIVE ELECTRODE MATERIAL
CRYSTAL-STRUCTURE
IONIC-CONDUCTIVITY
Аннотация: Thallium scandium hafnium molybdate Tl5ScHf(MoO4)6 and thallium scandium zirconium molybdate Tl5ScZr(MoO4)6 crystallize in trigonal symmetry with the space group . The compounds are synthesized by sintering the finely powdered simple molybdates mixture in a muffle furnace at 723–823 K for 100 h. The crystal structures of Tl5ScHf(MoO4)6 and Tl5ScZr(MoO4)6 are obtained by Rietveld method. The following unit cell parameters are calculated for Tl5ScHf(MoO4)6: a = 10.62338 (5), c = 38.0579 (2) Å, V = 3719.64 (4) Å3, Z = 6 and for Tl5ScZr(MoO4)6: a = 10.63216 (7), c = 38.0716 (3) Å, V = 3727.14 (5) Å3, Z = 6. The conductivity of the Tl5ScHf(MoO4)6 and Tl5ScZr(MoO4)6 are measured between 293 and 860 K. The ionic conductivity of Tl5ScHf(MoO4)6 and Tl5ScZr(MoO4)6 molybdates are 8 × 10−4 S/cm and 8 × 10−3 S/cm (at 773 K); the activation energy of ionic transfer are 0.8 eV and 0.3 eV respectively.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Belousov O. V., Borisov R. V., Zharkov S. M., Parfenov V. A., Dorokhova L. I.
Заглавие : Redox potentials of gold-palladium powders in aqueous solutions of H2PdCl4
Место публикации : Russ. J. Phys. Chem. A: MAIK Nauka-Interperiodica / Springer, 2012. - Vol. 86, Is. 3. - P.484-488. - ISSN 0036-0244, DOI 10.1134/S0036024412020070
Примечания : Cited References: 26
Предметные рубрики: BIMETALLIC NANOPARTICLES
METALLIC PALLADIUM
COPPER
ELECTRODE
BLACK
Bimetallic particles
Bimetallic powders
Gold-palladium
Hydrochloric acid solution
Nernst equation
Redox potentials
Gold
Hydrochloric acid
Redox reactions
Secondary batteries
Transmission electron microscopy
X ray diffraction analysis
Ключевые слова (''Своб.индексиров.''): bimetallic powders--gold-palladium--redox potential
Аннотация: The redox potential of fine-dispersed and compact bimetallic powders of the palladium-gold system in hydrochloric acid solutions of H2PdCl4 at a temperature of 60A degrees C was studied. It was found that the redox potential increases with gold enrichment of the solid solution in accordance with the Nernst equation. The effect of gold-palladium particle size on this redox potential is shown. The morphology, sizes, and composition of bimetallic particles are determined via transmission electron microscopy and X-ray diffraction analysis.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Voronin, Anton S., Fadeev, Yurii V., Makeev, Mstislav O., Mikhalev, Pavel A., Osipkov, Alexey S., Provatorov, Alexander S., Ryzhenko, Dmitriy S., Yurkov, Gleb Y., Simunin, Mikhail M., Karpova, Darina V., Lukyanenko A. V., Kokh, Dieter, Bainov, Dashi D., Tambasov I. A., Nedelin, Sergey V., Zolotovsky, Nikita A., Khartov, Stanislav V.
Заглавие : Low cost embedded copper mesh Based on cracked template for highly durability transparent EMI shielding films
Коллективы : Ministry of Science and Higher Education of the Russian Federation [0705-2020-0032]; [0287-2021-0026]
Место публикации : Materials. - 2022. - Vol. 15, Is. 4. - Ст.1449. - ISSN 1996-1944(eISSN), DOI 10.3390/ma15041449
Примечания : Cited References: 55. - This research work was supported by the Ministry of Science and Higher Education of the Russian Federation within the framework of state tasks No. 0287-2021-0026 and No. 0705-2020-0032
Предметные рубрики: PERFORMANCE
REALIZATION
ELECTRODE
NANOMESH
PATTERN
Аннотация: Embedded copper mesh coatings with low sheet resistance and high transparency were formed using a low-cost Cu seed mesh obtained with a magnetron sputtering on a cracked template, and subsequent operations electroplating and embedding in a photocurable resin layer. The influence of the mesh size on the optoelectric characteristics and the electromagnetic shielding efficiency in a wide frequency range is considered. In optimizing the coating properties, a shielding efficiency of 49.38 dB at a frequency of 1 GHz, with integral optical transparency in the visible range of 84.3%, was obtained. Embedded Cu meshes have been shown to be highly bending stable and have excellent adhesion strength. The combination of properties and economic costs for the formation of coatings indicates their high prospects for practical use in shielding transparent objects, such as windows and computer monitors.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Kuzubov A. A., Fedorov A. S., Eliseeva N. S., Tomilin F. N., Avramov P. V., Fedorov D. G.
Заглавие : High-capacity electrode material BC3 for lithium batteries proposed by ab initio simulations
Место публикации : Phys. Rev. B: American Physical Society, 2012. - Vol. 85, Is. 19. - Ст.195415. - ISSN 1098-0121, DOI 10.1103/PhysRevB.85.195415
Примечания : Cited References: 22. - We thank the Institute of Computer Modeling (Siberian Division, Russian Academy of Sciences, Russia), the Joint Supercomputer Center of the Russian Academy of Sciences, the supercomputer center of the Institute of Space and Information Technologies of the Siberian Federal University, and the supercomputer center of the Moscow State University (SKIF-MGU) for providing an opportunity to use their computers for performing all calculations. The work was supported by Russian Foundation for Basic Research Grant No. 12-02-00640-a and federal program Grant No. 1.3.2, "Scientific and pedagogical specialists in innovation Russia 2009-2013."
Предметные рубрики: TRANSITION
GRAPHITE
POINTS
CARBON
Аннотация: The absorption energy and diffusion rates of lithium atoms inside graphitelike boron carbide (BC3) crystal are investigated by the ab initio pseudopotential density-functionalmethod using generalized gradient approximation. It is shown that lithium may effectively intercalate this structure with the maximum lithium concentration corresponding to Li2BC3 stoichiometry, which is threefold in comparison to lithium in graphite. The potential barrier values for lithium diffusion both at low and maximum concentration are about 0.19 eV, so lithium atoms inside the BC3 structure can move easily. These findings suggest that boron carbide looks like a good candidate as an anode material in lithium ion batteries.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Voronin A. S., Ivanchenko F. S., Simunin M. M., Shiverskiy A. V., Aleksandrovsky A. S., Nemtsev I. V., Fadeev Y. V., Karpova D. V., Khartov S. V.
Заглавие : High performance hybrid rGO/ Ag quasi-periodic mesh transparent electrodes for flexible electrochromic devices
Место публикации : Appl. Surf. Sci.: Elsevier Science, 2016. - Vol. 364. - P.931–937. - ISSN 0169-4332, DOI 10.1016/j.apsusc.2015.12.182. - ISSN 1873-5584
Примечания : Cited References: 31
Предметные рубрики: NANOWIRE NETWORKS
GRAPHENE FILMS
OXIDE
OXIDATION
HEATERS
Ключевые слова (''Своб.индексиров.''): quasi-periodic mesh transparent electrode self-organized template--reduced graphene oxide (rgo)--flexible electrochromic device
Аннотация: A possibility of creating a stable hybrid coating based on the hybrid of a reduced graphene oxide (rGO)/ Ag quasi-periodic mesh (q-mesh) coating has been demonstrated. The main advantages of the suggested method are the low cost of the processes and the technology scalability. The Ag q-mesh coating is formed by means of the magnetron sputtering of silver on the original template obtained as a result of quasi-periodic cracking of a silica film. The protective rGO film is formed by low temperature reduction of a graphene oxide (GO) film, applied by the spray-deposition in the solution of NaBH4. The coatings have low sheet resistance (12.3 Ω/sq) and high optical transparency (82.2%). The hybrid coating are characterized by high chemical stability, as well as they show high stability to deformation impacts. High performance of the hybrid coatings as electrodes in the sandwich-system «electrode – electrochromic composition – electrode» has been demonstrated. The hybrid electrodes allow the electrochromic sandwich to function without any visible degradation for a long time, while an unprotected mesh electrode does not allow performing even a single switching cycle.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Tarasov I. A., Yakovlev I. A., Molokeev M. S., Rautskii M. V., Nemtsev I. V., Varnakov S. N., Ovchinnikov S. G.
Заглавие : Growth of α-FeSi2 nanocrystals on si(100) with Au catalyst
Место публикации : Mater. Lett.: Elsevier, 2016. - Vol. 168. - P.90-94. - ISSN 0167577X (ISSN), DOI 10.1016/j.matlet.2016.01.033
Примечания : Cited References: 25. - The work was supported by the Program of the President of the Russian Federation for the support of leading scientific schools (Scientific School 2886.2014.2), The Russian Foundation for Basic Research (RFBR) (Grants no. 13-02-01265), State Contract no. 02.G25.31.0043 and State Task no. 16.663.2014К).
Предметные рубрики: EPITAXIAL-GROWTH
LOW-TEMPERATURE
FeSi2
NANOWIRES
Si(111)
FILMS
Si
Ключевые слова (''Своб.индексиров.''): nanomaterials--molecular beam epitaxy--α-fesi2--electrode
Аннотация: Self-organized α-FeSi2 nanocrystals on (100) silicon substrate were synthesized by molecular beam epitaxy with Au catalyst. The microstructure and basic orientation relationship between the silicide nanocrystals and silicon substrate were analyzed in detail. α-FeSi2 nanocrystals appeared to be inclined trapezoid and rectangular nanoplates, polyhedral nanobars and pyramid-like ones, aligned along 011 directions on (100) silicon substrate with the length up to 1.5 μm, width ranging between 80 and 500 nm and thickness from 30 to 170 nm. As has been proposed metallic iron silicide may be used for manufacturing electric contacts on silicon. A current-voltage characteristic of the structure was measured at room temperature and showed good linearity.
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10.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Drokin N. A., Kokourov G. A., Glushchenko G. A., Osipova I. V., Maslennikov A. N., Churilov G. N.
Заглавие : Effect of electrode material on impedance spectra of metal-polyethylene structures with carbon nanotubes
Место публикации : Phys. Solid State: MAIK Nauka-Interperiodica / Springer, 2012. - Vol. 54, Is. 4. - P.844-848. - ISSN 1063-7834, DOI 10.1134/S1063783412040063
Примечания : Cited References: 15. - This study was supported by the Ministry of Education and Science of the Russian Federation within the framework of the Russian Federal Targeted Program "Scientific and Scientific-Pedagogical Human Resources for the Innovative Russia in 2009-2011" and the Presidium of the Russian Academy of Sciences (integration project no. 27.1).
Предметные рубрики: SPECTROSCOPY
Аннотация: The effect of an electrode material on electrical properties of a composite material based on super-high-molecular polyethylene (SHMPE) filled with carbon nanotubes has been studied using impedance spectroscopy. Using the method of replacing the sample by an equivalent electric circuit, it has been found that, depending on the electrode material, a blocking barrier with high active resistance and a space charge region adjacent to it arise in the interface region. It has been shown that the barrier height is controlled by surface electronic states of SHMPE and weakly depends on the electron work function of metal electrodes (Bardeen barrier). The characteristic times of electrical relaxation characterizing bulk and interface regions of the composite under study have been determined.
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11.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Isakova V. G., Osipova I. V., Dudnik A. I., Cherepakhin A. V., Zharikova N. V., Nemtsev I. V., Volochaev M. N.
Заглавие : Decoration of carbon nanomaterial powders with dispersed platinum metal particles
Коллективы : Center for Shared Use of the Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Sciences
Место публикации : Russ. J. Appl. Chem. - 2018. - Vol. 91, Is. 7. - P.1209-1216. - ISSN 1070-4272, DOI 10.1134/S1070427218070212. - ISSN 1608-3296(eISSN)
Примечания : Cited References: 22. - The study was performed with the support and equipment of the Center for Shared Use of the Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Sciences.
Предметные рубрики: NANOPARTICLES
PALLADIUM
FULLERENE
ELECTRODE
NANOTUBES
OXIDATION
Ключевые слова (''Своб.индексиров.''): carbon nanomaterials--platinum metal nanoparticles--in situ one-step method
Аннотация: Carbon nanomaterials (fullerite, detonation nanodiamonds, Taunit, fullerenol, fullerene-containing black) were decorated with platinum group metal nanoparticles in situ in one step by low-temperature combustion (~250–270°С) of a powdered mixture of platinum metal acetylacetonate [Pt-M(асас)n, Pt-М = Pt(II), Pd(II), Rh(III), Ir(III), acac = CH3COCHCOCH3, n is the oxidation state of Pt-М] with carbon nanomaterials in air. As shown by thermal analysis, the process is based on thermal oxidative degradation of the organometallic complex, catalyzed by carbon nanomaterials, with oxidation (combustion) of the organic moiety and release of the metal into the condensed phase. The thermal process in an open system occurs in the glowing mode (210–250°С); the size of the nanoparticles formed is 7–30 nm. Under the conditions restricting the air access to the reaction mixture and free outflow of gaseous products formed by oxidation of acac ligands, the nanoparticle size decreases to 3–10 nm. The particle size depends on the metal amount in the initial powder mixture and on the support morphology.
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12.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Belyaev B. A., Drokin N. A.
Заглавие : Impedance spectroscopy investigation of electrophysical characteristics of the electrode-liquid crystal interface
Коллективы : Siberian Branch of the Russian Academy of Sciences [109]
Место публикации : Phys. Solid State: MAIK Nauka-Interperiodica / Springer, 2015. - Vol. 57, Is. 1. - P.181-187. - ISSN 1063, DOI 10.1134/S1063783415010060. - ISSN 10906460(eISSN)
Примечания : Cited References:22. - This study was supported by the Siberian Branch of the Russian Academyof Sciences (integration project no. 109).
Предметные рубрики: DIELECTRIC-PROPERTIES
CONDUCTIVITY
Аннотация: The behavior of frequency dependences of the impedance of a capacitive measuring cell with a liquid crystal has been investigated in the frequency range from 10−1 to 105 Hz. A method for determining electrophysical characteristics of the liquid crystal in the bulk and at the liquid crystal-metal electrode interface has been proposed and tested for liquid crystals of the alkyl cyanobiphenyl series, which are doped with ionic surfactants. The method is based on the use of an equivalent electrical circuit, which makes it possible to approximate the impedance spectra with the required accuracy, and also on the determination of the frequency at the singular point in the impedance spectra, at which the reactive component of the electric current flowing through the liquid-crystal cell is negligible compared to the active component.
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13.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Yasinskiy A. S., Padamata S. K., Polyakov P. V., Shabanov A. V.
Заглавие : An update on inert anodes for aluminium electrolysis
Место публикации : Non-Ferrous Met. - 2020. - Vol. 48, Is. 1. - P.15-23. - ISSN 20720807 (ISSN), DOI 10.17580/nfm.2020.01.03
Примечания : Cited References: 62. - The work is performed as a part of the state assignment for the science of Siberian Federal University, project number FSRZ-2020-0013. Use of equipment of Krasnoyarsk Regional Center of Research Equipment of Federal Research Center “Krasnoyarsk Science Center SB RAS” is acknowledged
Аннотация: This update includes the literature related to the inert anodes which were published in the past decade. The metallic anodes are widely regarded as promising candidates to replace the carbon anodes due to its attractive properties like good electrical conductivity, easy to manufacture and high resistance to high thermal shocks. The metals have been tested in pure state and alloy (binary, ternary) form. The oxide scale formed on the anode surface acts as a barrier between the electrolyte and the anode, which protects the anode from being dissolved. The layer of molten fluorides is formed between the scale and the metal anode after a certain time of polarization, and the oxide scale acts as a bipolar electrode. Metal like Cu is reduced at the internal side of the scale. This paper elaborates the effects of various parameters on the performance of the anode. Cu-based alloys (Cu – Ni – Fe and Cu – Al) have shown promising results and could perform well in low-temperature electrolytes. It has been well established that the Cu content in Cu – Ni – Fe and Cu – Al alloys plays a major role in the metal dissolution as the CuO/Cu2O scales formed on the outer layer act as a sacrificial one. The corrosion rate of an anode can be reduced by decreasing the operating temperature, which is possible by using the KF – AlF3 melts. The use of suspensions can increase the purity of the produced metal by stop-ping the anode products to come in contact with cathode metal. Many industries including RUSAL and ELYSIS are still conducting a considerable amount of research to develop an inert anode and are expecting to have a carbon-free cell in the nearest future.
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