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1.
Инвентарный номер: нет.
   
   A 60


   
    Anodic behavior of the NiO-Fe2O3-Cr2O3-Cu composite during the low-temperature electrolysis of aluminum / V. A. Kovrov, A. P. Khramov, Yu. P. Zaikov, V. M. Chumarev, E. N. Selivanov // Russian Journal of Non-Ferrous Metals. - 2014. - Vol. 55, № 1. - P8-14
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
ОКСИД ХРОМА -- АНОД -- ЭЛЕКТРОЛИЗ -- РАСТВОРЕНИЕ
Аннотация: In order to fabricate oxide-metallic composites with the composition 25.3NiO-41.2Fe2O3-13.5Cr2O3-20.0Cu (wt %), the temperature and duration of sintering (1350°C, 30 min) that ensure the formation of the solid solution of chromium oxide in nickel ferrite have been determined. This material is tested as an anode for the electrolysis of the low-temperature solution with the composition 12.0NaF-36.8KF-51.2AlF3 (wt %), which was saturated with Al2O3 (t = 800°C). The amount of gaseous oxygen evolved on the anode was measured. It is shown that the main reaction on an anode at current density i = 0.015–1.0 A cm−2 is the oxidation of oxygen-containing anions from a melt with the formation of gaseous O2 and a substantial increase in the oxidation rate of the composite anode is observed at i > 1.0 A cm−2. The voltage across the electrolyzer (4.5 ± 0.5 V) and the anodic potential (2.43 ± 0.2 relative to the Al reference electrode) during a prolonged experiment (for 89 h, i = 0.4 A cm−2) indicate a stable and acceptable electrical conductivity of the material, while the dissolution rate, which was calculated by the weight loss (0.6 kg/yr) and volume loss (0.7 cm/yr), satisfy the requirements to inert anodes.

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2.
Инвентарный номер: нет.
   
   B 12


   
    BaCeO3: Materials development, properties and application / D. Medvedev, A. Murashkina, E. Pikalova, A. Demin, A. Podias, P. Tsiakaras // Progress in Materials Science. - 2014. - Vol. 60. - P72-129
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
МАТЕРИАЛЫ ОКСИДНЫЕ -- ПРОВОДИМОСТЬ ПРОТОННАЯ -- ПРОВОДИМОСТЬ КИСЛОРОДНАЯ
Аннотация: The characteristic of a number of oxide materials, which include BaCeO3-systems, is their ability to show the proton conductivity along with oxygen-ion conductivity. Such atypical behavior for other oxides attracts great interest in theoretical and experimental solid state electrochemistry. The present review aims at: (a) summarizing the evolution of new functional BaCeO3-based materials with respect to their properties, and properties’ optimization (importance of ceramics’ technology preparation, structural and thermodynamic stability of materials, enhanced ionic conductivity of electrolytes with low electronic contribution, thermal and chemical compatibility with other oxide components), and (b) examining the possibility of their application in various solid oxide electrochemical devices

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3.
Инвентарный номер: нет.
   
   B 22


    Bannykh, A. V.
    Electrical conductivity of BaCe0.9Nd0.1O3-дельта in H2+H2O+Ar gas mixture [Текст] / A. V. Bannykh, B. L. Kuzin // Ionics. - 2003. - Vol. 9, № 1-2. - С. 134-139.
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
BaCe0.9Nd0.1O3-дельта -- ELECTRICAL CONDUCTIVITY

\\\\Cserver\\dist\\НБО\\Cтатьи БД ИВТЭ\\Ionics\\2003, V. 9, № 1-2, С. 134-139.pdf
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4.
Инвентарный номер: нет.
   
   B 24


    Baraboshkin, A. N.
    Stability of the planar growth front during the production of diffusion coatings by contact reduction in a molten salt. The terminal conductivity of the solid phase [Text] / A. N. Baraboshkin // Melts. - 1992. - V. 6, N 3. - P132-136
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
РОСТ ОСАДКОВ -- ПОЛУЧЕНИЕ ДИФФУЗИОННЫХ ПОКРЫТИЙ -- ПОКРЫТИЕ ДИФФУЗИОННОЕ -- ВОССТАНОВЛЕНИЕ КОНТАКТНОЕ -- РАСПЛАВ СОЛЕВОЙ -- ПРОВОДИМОСТЬ КОНЕЧНАЯ -- ФАЗА ТВЕРДАЯ -- ДИФФУЗИЯ -- УСТОЙЧИВОСТЬ ПЛОСКОГО ФРОНТА
Аннотация: The effect of the electrical conductivity of a diffusion alloy formed on a metal surface by contact reduction by this metal of compounds of a more electropositive metal in a molten salt on the microdistribution of current of the substance deposited and the magnitudes of the local currents is investigated. It is shown that decreasing electrical conductivity leads to localization of the anodic and cathodic coupled reactions and decrease in the local currents. Conditions are found for producing continuous diffusion layers

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5.
Инвентарный номер: нет.
   
   B 96


    Burmakin, E. I.
    Lithium-ation conductivity of Li4-x-2ySi1-xVxZnyO4 solid electrolytes / E. I. Burmakin, G. Sh. Shekhtman // Kinetics of electrode processes : VIII int. Frumkin Symp. (Moscow, 18-22 Oct. 2005) : abstr. - Moscow, 2005. - С. 71.
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
LITHIUM-ATION -- SOLID ELECTROLYTES -- Li4-x-2ySi1-xVxZnyO4

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6.
Инвентарный номер: нет.
   
   C 47


   
    Charge transfer in mixed proton, oxygen ion and electron solid oxide conductor [Текст] / A. K. Demin, E. V. Gorbova, M. V. Glumov, P. E. Tsiakaras // Ionics. - 2005. - Vol. 11, № 3-4. - С. 289-293. - Библиогр. : с. 293 (3 назв.)
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
MASS TRANSFER -- PROTON-OXYGEN
Аннотация: Analysis of the equivalent scheme of the mixed proton-oxygen ion-electron conductor (MPOEC) allowed to obtain relationships between parameters of the membrane (total conductivity and transfer numbers) and parameters of the charge and mass transfer through the membrane (partial ion and electron currents, the specific flux of hydrogen at the cathode membrane surface) under regime of electrochemical reforming. It was stated that presence of proton conductivity in addition to oxygen ion conductivity led to increase of total flux of produced hydrogen. However, under conditions typical for the electrochemical reforming of methane into hydrogen, the specific hydrogen flux is about four times lower in the case when the membrane has proton-electron conductivity than in the case when the membrane has oxygen ion-electron conductivity.

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7.
Инвентарный номер: нет.
   
   C 47


   
    Charge transfer in molten chloride systems containing cerium ions [Text] / A. B. Salyulev, O. Y. Tkatcheva, V. Y. Shishkin, A. A. Red'kin, V. A. Khokhlov // Progress in Molten Salt Chemistry: Proceedings from the EUCHEM 2000 Conference on Molten Salts (Denmark, August 20-25, 2000). - 2000. - V. 1. - P471-474. - Bibliogr.: p. 474 (6 ref.)
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
ЭЛЕКТРОПРОВОДНОСТЬ РАСПЛАВОВ -- РАСПЛАВ ХЛОРИДНЫЙ -- ХЛОРИД РАСПЛАВЛЕННЫЙ -- ХЛОРИД ЦЕРИЯ -- ЦЕРИЙ -- Ce -- CeCl3 -- CsCl -- CeCl3-CsCl -- Cs -- ЦЕЗИЙ -- ХЛОРИД ЦЕЗИЯ -- ПЕРЕНОС ЗАРЯДОВ
Аннотация: The electrical conductivity of molten chloride systems containing different cerium ions has been measured. In order to change stable trivalent state two methods have been used: 1 - applying chlorine pressure; 2 - metallic cerium addition. In both cases the rise of electrical conductivity in comparison with initial one have been observed. The results obtained are explained by electronic conductivity appearance as a result of electron exchange between different valence cerium ions

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8.
Инвентарный номер: нет.
   
   C 73


   
    Conductivity and thermal expansion of the Ce0.8Gd0.2O1.9 solid electrolyte in the oxidizing and reducing atmospheres [Текст] / V. P. Gorelov, V. B. Balakireva, I. Yu. Yaroslavtsev, V. A. Kazantsev, E. G. Vaganov // Russian Journal of Electrochemistry. - 2007. - Vol. 43, № 8. - С. 888-893. - Библиогр. : с. 893 (18 назв.)
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
ПРОВОДИМОСТЬ ВЫСОКОТЕМПЕРАТУРНАЯ

\\\\Cserver\\dist\\НБО\\Cтатьи БД ИВТЭ\\Russian Journal of Electrochemistry\\2007, V. 43, № 8, С. 888-893.pdf
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9.
Инвентарный номер: нет.
   
   C 74


   
    Conductivity of Gd-doped BaCeO3 protonic conductor in Н2–Н2О–О2 atmospheres / D. A. Medvedev, E. V. Gorbova, A. K. Demin, P. Tsiakaras // International Journal of Hydrogen Energy. - 2014. - Vol. 39, № 36. - P21547-21552. - Bibliogr. : p. 21551-21552 (31 ref.)
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
ПРОВОДИМОСТЬ ИОННАЯ -- ПРОВОДИМОСТЬ ПРОТОННАЯ -- МАТЕРИАЛЫ КЕРАМИЧЕСКИЕ -- ТВЕРДЫЕ ЭЛЕКТРОЛИТЫ
Аннотация: In the present investigation, a radically new and simple method of evaluation of the proton conductivity is proposed. This method is based on the conductivity measurement of ceramic materials depending on the oxygen partial pressure (pO2) at a gradual transition from the atmosphere of pure oxygen to one of wet hydrogen: O2 → O2 (H2O) → H2O (O2) → H2O → H2O (H2) → H2 (H2O). Experimental data of total conductivities for the solid electrolyte BaCe0.9Gd0.1O3–δ (BCG) have been fitted with modeling ones in accordance with the defect chemistry model at 600, 750 and 900 °C. Experimental and theoretical relationships correlate well with each other, demonstrating the success of the proposed model description. Analysis of dependences of the total conductivity as a function of pO2 with simultaneous change of pO2 and water partial pressure (pH2O) allows the estimation of the contribution of the partial conductivities (protonic, oxygen ionic, electronic) in the total one and the identification of the areas of purely ionic and purely protonic conductivity. Using the obtained data, some transport phenomena of proton-conducting materials, which were not previously interpreted, are discussed.

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10.
Инвентарный номер: нет.
   
   C 94


   
    Cu and Gd co-doped BaCeO3 proton conductors: Experimental vs SEM image algorithmic-segmentation results / M. Ananyev, D. Medvedev, A. Gavrilyuk, S. Mitri, A. Demin, V. Malkov, P. Tsiakaras // Electrochimica Acta. - 2014. - Vol. 125. - P371-379.
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
ЭЛЕКТРОПРОВОДНОСТЬ -- ЦЕРАТ БАРИЯ -- ТВЕРДЫЕ РАСТВОРЫ -- ОКСИД МЕДИ -- ПРОВОДИМОСТЬ
Аннотация: Segmentation algorithms for the quantitative description of the surface microstructure and the evaluation of the grain-boundary conductivity of ceramic materials surface using SEM microphotographs analysis was developed and applied in the present work for first time in barium cerate based solid solutions. To this purpose novel polycrystalline ceramic materials based on Cu and Gd co-doped BaCeO3 proton conductors exhibiting high proton conductivity have been prepared and characterized. The influence of copper oxide as a dopant on the microstructure and the electrical properties of BaCe0.9–xGd0.1CuxO3–δ (0≤x≤0.1) have been examined in detail. It is shown that the dependence of the electrical conductivity is correlated with the average oxide grain diameter variation in air at various temperatures. Moreover, it was found that the algorithmic segmentation evaluation results are in good agreement with the experimental ones, verifying the considerable contribution of the grain-boundary conductivity to the electrical transport of Cu and Gd co-doped BaCeO3 proton conductors.

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