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  1. No Access

    Article

    Electrochemical behavior of perovskite-type Ce1−xCaxVO3 under reducing conditions

    The incorporation of calcium into the zircon-type lattice of Ce1−xCaxVO4 (x = 0.2–0.4), stable at atmospheric oxygen pressure, leads to a modest decrease in the unit cell volume and electrical conductivity, predo...

    E. V. Tsipis, D. V. Zhigacheva, A. O. Zhigachev… in Journal of Solid State Electrochemistry (2024)

  2. No Access

    Article

    Ionic transport in (La,Sr)CoO3-δ ceramics

    Increasing Sr2+ concentration and the creation of A-site deficiency in La1-x-ySrxCoO3-δ (x = 0.3–0.7, y = 0–0.05) increase oxygen ionic conductivity, oxygen permeability of the dense ceramic membranes, and surfac...

    E. V. Tsipis, E. N. Naumovich, M. V. Patrakeev… in Journal of Solid State Electrochemistry (2021)

  3. No Access

    Article

    Defect formation, ordering, and transport in SrFe1–x Si x O3–δ (x = 0.05–0.20)

    Oxygen nonstoichiometry of perovskite-like SrFe1–x Si x O3–δ (x = 0.05–0.20), studied by thermogravimetric analysis and coulometric titration in ...

    O. V. Merkulov, E. N. Naumovich, M. V. Patrakeev… in Journal of Solid State Electrochemistry (2018)

  4. No Access

    Article

    Grain-boundary states in solid oxide electrolyte ceramics processed using iron oxide sintering aids: a Mössbauer spectroscopy study

    In order to appraise microstructure-determined defect formation processes and minor intergranular states in the solid electrolyte materials sintered employing transition metal oxide additives, the transmission...

    E.V. Tsipis, J.C. Waerenborgh, V.V. Kharton in Journal of Solid State Electrochemistry (2017)

  5. No Access

    Article

    Ion transport in dual-phase SrFe1−xТаxO3−δ (x = 0.03 − 0.10): effects of redox cycling

    The incorporation of tantalum cations in mixed-conducting SrFe1-xTaxO3−δ (x = 0.03 − 0.10) results in the formation of single cubic perovskite-like phases in oxidizing atmospheres while under red...

    E. V. Shalaeva, M. V. Patrakeev, A. A. Markov… in Journal of Solid State Electrochemistry (2015)

  6. No Access

    Article

    Electrical, electrochemical, and thermomechanical properties of perovskite-type (La1−x Sr x )1−y Mn0.5Ti0.5O3−δ (x = 0.15–0.75, y = 0–0.05)

    Strontium additions in (La1−x Sr x )1−y Mn0.5Ti0.5O3−δ (x = 0.15–0.75, y = 0–0.05) having a rhombohedrally distorted perovskite s...

    V. A. Kolotygin, E. V. Tsipis, A. I. Ivanov… in Journal of Solid State Electrochemistry (2012)

  7. No Access

    Article

    Heterogeneous ceramics formed by grain boundary engineering

    Two examples were selected to emphasize the potential of grain boundary engineering in the performance design of heterogeneous ceramics. Gadolinium-doped ceria-based powders were co-fired with additions of sil...

    D. Ivanova, E. M. C. L. G. P. Lima, A. Kovalevsky, F. M. L. Figueiredo… in Ionics (2008)

  8. No Access

    Article

    Behavior of (La,Sr)CoO3- and La2NiO4-based ceramic anodes in alkaline media: compositional and microstructural factors

    The behavior of dense ceramic anodes made of perovskite-type $$ {\text{La}}_{{1 - x - y}} {\text{Sr}}_{x} {\text{Co}}_{{1 - z}} {\text...

    S. K. Poznyak, V. V. Kharton, J. R. Frade… in Journal of Solid State Electrochemistry (2008)

  9. No Access

    Article

    Oxygen ion transport numbers: assessment of combined measurement methods

    Several modifications of the faradaic efficiency and electromagnetic field (EMF) methods, taking electrode polarisation resistance into account, were considered based on the analysis of ion transport numbers a...

    V. V. Kharton, A. L. Shaula, F. M. B. Marques in Ionics (2007)

  10. Article

    Open Access

    Silica-scavenging effect in zirconia electrolytes: assessment of lanthanum silicate formation

    Yttria-stabilized zirconia (YSZ)-based composite electrolytes were produced by mixture and firing of the base electrolyte, namely with silica, and silica and lanthanum oxide, to study the impact of presence an...

    A. V. Kovalevsky, F. M. B. Marques, V. V. Kharton, F. Maxim, J. R. Frade in Ionics (2006)

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  11. No Access

    Article

    Oxygen transport and thermomechanical properties of SrFe(Al)O3-δ –SrAl2O4 composites: microstructural effects

    Measurements of oxygen permeation through dense % MathType!Translator!2!1!AMS LaTeX.tdl!TeX -- AMS-LaTeX! % MathType!MTEF!2!1!+- % feaaeaart1ev0aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbbjxAHX % garmW...

    V. V. Kharton, A. V. Kovalevsky… in Journal of Solid State Electrochemistry (2006)

  12. No Access

    Article

    Applicability of emf measurements under external load resistance conditions for ion transport number determination

    In order to evaluate the applicability of concentration cells for the ion transference number measurements with external load, the cell response was simulated with variable transport properties of the cell mat...

    J. R. Frade, V. V. Kharton, A. A. Yaremchenko… in Journal of Solid State Electrochemistry (2006)

  13. No Access

    Article

    Oxygen permeability of mixed-conducting composite membranes: effects of phase interaction

    Composite ceramic membranes, based on selected combinations of ionic conductors ((La0.9Sr0.1)0.98Ga0.8Mg0.2O3-δ—LSGM or Ce0.8Gd0.2O2-δ—CGO) and electronic/mixed conductors (La2Ni0.8Cu0.2O4+δ—LNC, La0.8Sr0.2Fe0.8C...

    A. L. Shaula, V. V. Kharton, F. M. B. Marques… in Journal of Solid State Electrochemistry (2006)

  14. No Access

    Article

    Development of oxygen ion conductors: One relevant tendency

    In the past ten years a series of developments in the field of materials with dominant oxygen ion conduction introduced a variety of new systems. The most relevant aspect is a shift from ionic transport mechan...

    F. M. B. Marques, V. V. Kharton in Ionics (2005)

  15. No Access

    Article

    Transport and electrocatalytic properties of La0.3Sr0.7Co0.8Ga0.2O3−δ membranes

    Incorporation of gallium into the perovskite lattice of La0.3Sr0.7CoO3−δ leads to increasing unit cell volume and to decreasing thermal expansion, total conductivity and oxygen permeability. At 973–1223 K, the ox...

    V. V. Kharton, E. V. Tsipis, I. P. Marozau… in Journal of Solid State Electrochemistry (2005)

  16. No Access

    Article

    Defect formation and transport in SrFe1-xAlxO3-δ

    Perovskite-related phases derived from SrFeO3-δ are among known mixed conductors with highest oxygen permeability and are thus of interest as the ceramic membrane materials for oxygen separation and partial oxida...

    A. L. Shaula, V. V. Kharton, M. V. Patrakeev, J. C. Waerenborgh, D. P. Rojas… in Ionics (2004)

  17. No Access

    Article

    Cellulose-precursor synthesis of nanocrystalline Ce0.8Gd0.2O2−δ for SOFC anodes

    Developments of intermediate-temperature solid oxide fuel cells (IT SOFCs) require novel anode materials with a high electrochemical activity at 800–1070 K. The polarization of cermet anodes, made of nickel, c...

    E. V. Tsipis, V. V. Kharton, I. A. Bashmakov… in Journal of Solid State Electrochemistry (2004)

  18. No Access

    Article

    Oxygen ionic and electronic transport in Gd2−xCaxTi2O7 −δ pyrochlores

    Oxygen ion transference numbers for Gd2−xCaxTi2O7 −δ (x=0.10–0.14) pyrochlore ceramics were determined at 973–1223 K by the modified e.m.f. and faradaic efficiency techniques, taking into account electrode polari...

    V. V. Kharton, E. V. Tsipis, A. A. Yaremchenko… in Journal of Solid State Electrochemistry (2003)

  19. No Access

    Article

    Mixed conductivity of zircon-type Ce1−xAxVO4±δ (A=Ca, Sr)

    Incorporation of alkaline-earth cations into the zircon-type lattice of Ce1−xAxVO4+δ (A=Ca, Sr; x=0−0.2) was found to significantly increase the p-type electronic conductivity and to decrease the Seebeck coeffici...

    E. V. Tsipis, V. V. Kharton, N. P. Vyshatko, A. L. Shaula, M. V. Patrakeev… in Ionics (2003)

  20. No Access

    Article

    Mixed conductivity of gadolinium titanate-based pyrochlore ceramics: The grain boundary effects

    In order to reveal the role of grain boundaries on the ionic and electronic conduction processes, the transport properties of Gd2−xGaxTi2O7−δ (x=0.10–0.14) pyrochlore ceramics, pure and with SiO2 additions, were ...

    V. V. Kharton, F. M. B. Marques, E. V. Tsipis, A. P. Viskup, M. V. Patrakeev… in Ionics (2003)

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