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Article
A Study of the Electrochemical Characteristics of Single-Chamber Solid Oxide Fuel Cells Based on Platinum and Strontium-Doped Lanthanum Manganite Electrodes and Fed with a Methane–Air Mixture
The properties of single-chamber solid oxide fuel cells (SC SOFCs) composed of an electrolyte based on yttria-stabilized zirconia (YSZ), a platinum anode, and a strontium-doped lanthanum manganite (LSM) cathod...
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Article
Performance of Single-Chamber Solid Oxide Fuel Cells Based on Ni and Ni–Cu Alloy Anodes and Fed with a Methane–Air Mixture
The electrochemical characteristics of Ni|YSZ|LSM and Ni–Cu|YSZ|LSM single-chamber solid oxide fuel cells fed with a methane–air mixture ([CH4]/[O2] molar ratio of 2) in a temperature range of 550–700°C have been...
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Article
Formation of Thin-Film Electrolyte by Electrophoretic Deposition onto Modified Multilayer Cathode
Possibility of forming a gas-tight thin-film solid electrolyte by the electrophoretic deposition method on a modified multilayer cathode was examined. The main goal of the study was to find such technological ...
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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
Electrode kinetics at the Pt, O2|La0.9Sr0.1ScO3-δ interface
Most of the ceramic proton conductors reveal considerable hole conductivity in an oxidizing ambient. This results in a necessity of taking into account the nonfaradaic current when studying the electrode kinet...
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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
Oxygen isotope exchange between the gas-phase and the electrochemical cell O2, Pt | YSZ | Pt, O2 under conditions of applied potential difference
The kinetics of oxygen isotope exchange between gas-phase oxygen and the electrochemical cell O2, Pt | ZrO2 + 10 mol % Y2O3 (YSZ) | Pt, O2 with applied potential difference (ΔU = ±1.2 V) is studied in the tempera...
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Article
The use of Tikhonov regularization method for calculating the distribution function of relaxation times in impedance spectroscopy
The state-of-the-art in realization of the method of distribution of relaxation times (DRT) as applied to the analysis of data of electrochemical impedance spectroscopy is briefly surveyed. The theoretical fun...
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Article
Electrical transport and kinetics of electrode processes in the system of (H2 + H2O + Ar), Pt|La0.9Sr0.1ScO3–δ
The method of impedance spectroscopy is used to study the electrochemical behavior of (H2 + H2O + Ar), Pt|La0.9Sr0.1ScO3–δ system depending on the temperature (500–700°C) and gas phase composition in the range of...
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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
Polarization resistance of platinum electrodes in contact with proton-conducting La0.9Sr0.1 613-1
The Pt-La0.9Sr0.1ScO3 − δ interface was studied by impedance spectroscopy at different temperatures (600–900°C) and partial pressures of oxygen (50 < pO2 < 2.1 × 104 Pa) in the gas phase saturated with H2O vapors...
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Article
Cathodes based on rare-earth metal nickelate ferrites prepared from industrial raw materials for solid oxide fuel cells
Powders of composite materials based on lanthanum nickelate-ferrite with different contents of lanthanides were synthesized using Ln-Ni-Fe-O (LnNF) mischmetal. The phase composition of the powders was determin...
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Article
Thermal expansion, gas permeability, and conductivity of Ni-YSZ anodes produced by different techniques
The supported Ni-YSZ (50 wt.% Ni + 50 wt.% Zr0.84Y0.16O1.92) anodes were produced of powders, obtained by the ceramic method, combustion synthesis, deposition of nickel oxide onto the YSZ ceramics, and deposition...
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Article
Oxide cathodes for electrochemical devices made with the use of a nanostructured composition material
The possibility of using the LnO x mischmetal (Ln = Ce, La, Nd, Pr, Sm) for preparation of cathodes for solid-oxide fuel cells with the supported YSZ electrolyte is studied. The...
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Article
Single fuel cell with supported LSM cathode
Single fuel cells with bilayer supported cathodes are manufactured and tested. The cathodes consist of a high-porous La0.6Sr0.4MnO3 support with the thickness of approximately 1 mm and a functional composite laye...
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Article
Single solid-oxide fuel cells with supporting ni-cermet anode
Single solid-oxide fuel cells (SOFCs) with a porous (36-41%) supporting Ni-cermet anode are manufactured and tested. The effect of the thickness of the supporting Ni-cermet anode on the electrochemical charact...
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Article
Options for adjustment of microstructure and conductivity of cathodic substrates of La(Sr)MnO3
The electrodes of solid-oxide fuel cells (SOFCs) must be characterized by high conductivity to decrease ohmic losses and sufficient porosity to provide high gas diffusion rate. In the cases, when the SOFC elec...
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Article
Peculiarities of electrical transfer and isotopic effects H/D in the proton-conducting oxide BaZr0.9Y0.1O3 − δ
Electrical conduction of the oxide BaZr0.9Y0.1O3 − δ is studied by electrochemical impedance spectroscopy as a function of temperature (300–600°C) and the oxygen partial pressure in gas phase saturated with H2O o...
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Article
Conductivity, oxygen interfacial exchange and diffusion in oxides based on lanthanum gallate
The method of isotopic exchange was used to study the oxygen exchange kinetics in the oxides of La0.88Sr0.12Ga0.82Mg0.18O3 − δ and La0.80Sr0.20Ga0.85−x Mg0.15Co x ...
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Article
Cathodes based on (La, Sr)MnO3 modified with PrO2 − x
The electrochemical characteristics of composite cathodes made of (La, Sr) MnO3-(Zr, Sc)O2 (LSM-SSZ), modified with PrO2 − x additive, and designed for application in solid oxide fuel cel...
