17 Result(s)
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Article
Structure, Oxygen Mobility, and Electrochemical Characteristics of La1.7Ca0.3Ni1 ‒ xCuxO4 + δ Materials
The Ruddlesden‒Popper phases pertain to numerous promising materials with the mixed ionic-electronic conductivity used in devices such as oxygen-conducting membranes, solid oxide fuel cells (SOFC), and electro...
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Article
Assessment of prospective cathodes based on (1-x)Ca3Co4O9+δ-xBaCe0.5Zr0.3Y0.1Yb0.1O3-δ composites for protonic ceramic electrochemical cells
This work presents investigation of novel composite electrodes comprising misfit layered oxide Ca3Co4O9+δ and protonic conductor BaCe0.5Zr0.3Y0.1Yb0.1O3-δ. Materials for the study were synthesized by the pyrolysi...
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Article
Oxygen Mobility in the Materials for Solid Oxide Fuel Cells and Catalytic Membranes (Review)
Oxygen transport (including oxygen mobility and surface reactivity) is one of the important factors governing electrochemical activity of solid oxide fuel cells electrodes as well as oxygen and hydrogen separa...
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Article
Formation of Bilayer Thin-Film Electrolyte on Cathode Substrate by Electrophoretic Deposition
Potentialities of the method of bilayer thin-film electrolyte electrophoretic deposition onto cathodic substrate are analyzed. Ce0.8Sm0.2O1.9–δ (SDC) nanopowder and BaCe0.89Gd0.1Cu0.01O3–δ BCGCuO) micropowder are...
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Article
Reversible Solid Oxide Fuel Cell for Power Accumulation and Generation
The anodic and cathodic polarization dependences for the oxygen electrode based on lanthanum-strontium manganite and the fuel Ni-cermet electrode are studied in the temperature range of 700–900°С in gas media ...
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Article
Oxygen isotope exchange in praseodymium nickelate
Oxygen surface exchange kinetics and diffusion were studied in Pr2NiO4 + δ (PNO) by the isotope exchange method with gas phase equilibration in the temperature range of 600–800 °C and oxygen pressure range of 0.3...
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Article
Transport features in layered nickelates: correlation between structure, oxygen diffusion, electrical and electrochemical properties
Oxygen migration is increasingly acknowledged as playing an important role in the ionic transport in mixed conductors and influencing the electrode electrochemical performance. The aim of this work was to esta...
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Article
Gd-doped SrTi0.5Fe0.5O3–δ mixed ionic-electronic conductors: structural, thermal, and electrical properties
The effect of Sr by Gd substitution on the structural, thermomechanical, electrical, and electrochemical properties of SrTi0.5Fe0.5O3–δ was investigated in the present work. The powders were synthesized by a soli...
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Article
Electrochemical properties of doped lantanum–nickelate-based electrodes
This work is devoted to the studying of effects of La2NiO4 do** with alkaline-earth elements: Ca, Sr, and Ba (at an amount of 15 mol %) on its structural, electrical, and electrochemical properties. The effects...
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Article
Composite electrodes for proton conducting electrolyte of CaZr0.95Sc0.05O3 – δ
A new method of obtaining gastight ceramic based on CaZr0.95Sc0.05O3 – δ is presented. The microstructure and electric properties of the obtained samples, same as the behavior of composite electrodes in contact w...
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Article
The effect of copper on the properties of La1.7Ca0.3NiO4 + δ-based cathodes for solid oxide fuel cells
The aim of the work was to develop the electrochemically active cathodes with a low in-plane resistance for application in the intermediate-temperature solid oxide fuel cells in contact with CeO2-based solid elec...
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Article
Electrophysical properties of Ce0.8Gd0.2O2 − δ + x mol % Al2O3 solid composite electrolytes
The influence of aluminum and cobalt oxides on the microstructure and the mechanical, electrical, and optical properties of the Ce0.8Gd0.2O2−δ solid electrolyte was studied. Using nanosized Al2O3 in the synthesis...
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Article
Structural and electric properties of the Ce0.8(Sm1 − x Ca x )0.2O2 − δ system (x = 0.0–1.0)
CeO2-based solid solutions with a fluorite structure are promising materials as electrolytes of medium-temperature electrochemical devices. This work presents the results of systematic studies of structural and e...
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Article
Solid electrolytes based on CeO2 for medium-temperature electrochemical devices
CeO2-based solid solutions with a fluorite structure are promising materials as electrolytes of medium-temperature electrochemical devices: electrolytic cells, oxygen sensors, and solid oxide fuel cells. In this ...
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Article
Potentiometric cells with oxygen-conducting solid electrolyte based on ceria
The present work presents studies of potentiometric cells with electrolyte of 0.98Ce0.8(Sm0.75Sr0.2Ba0.05)0.2O1.875 + 0.02TiO2 and electrodes of silver or various materials with a perovskite structure. The oxygen...
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Article
Promising membrane materials based on strontium titanate
Electroconductivity of SrTi1−x Fe x O3−δ(x = 0–0.5) specimens was studied by four-probe method. An opportunity was studied to produce hydrogen by high-tem...
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Article
Effect of sintering temperature on microstructure, electric and optical properties of Ce0.8Gd0.2O2−δ + 2 mol % TiO2
The effect of the sintering temperature of the Ce0.8Gd0.2O2−δ + 2 mol % TiO2 on its microstructure, electric, and optical properties was studied using the methods of x-ray spectroscopy, scanning electron microsco...
