Fabrication of membrane–electrode assemblies for solid-oxide fuel cells by joint sintering of electrodes at high temperature

Бурмистров, И. Н.; Агарков, Д. А.; Korovkin, E. V.; Yalovenko, D.V.; Бредихин, С. И.

doi:10.1134/s1023193517080043

Cited by 19 publications

(7 citation statements)

References 17 publications

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“…Single crystalline membranes were cut from the crystals, manufactured in A.M. Prokhorov General Physics Institute RAS (Russia) via direct melt crystallization technique in cold crucible (38)(39). Composition and structure optimization of anode and cathode electrodes were described in previous works (40)(41)(42)(43). Anode electrode was based on NiO/10Sc1CeSZ (89 mol% ZrO2 + 10 mol% Sc2O3 + 1 mol% CeO2) composite material, and cathode oneon LSM (La0.8Sr0.2)0.95MnO3-d/10Sc1CeSZ composite.…”

Section: Model Sofc Samplesmentioning

confidence: 99%

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Application of High-Temperature Raman Spectroscopy (RS) for Studies of Electrochemical Processes in Solid Oxide Fuel Cells (SOFCs) and Functional Properties of their Components

et al. 2021

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Combined technique and setup have been created that combines capabilities of electrochemical methods, as well as high-temperature Raman spectroscopy (RS) at Osipyan Institute of Solid State Physics RAS. In order to study the processes in the electrochemically active zone, a special geometry of samples was developed on basis of optically transparent single crystal membranes of an anionic conductor with a toroidal shape counter-electrode. With the use of this combined technique and special geometry, studies of the kinetics of reduction of nickel in composite SOFC anodes were carried out. The influence of the composition of fuel on Raman spectra obtained from the internal interface in the current load mode was also investigated, and the correlations with the cell voltage were studied. RS is also used to study the structure of single-crystal samples of anionic conductors, including at SOFCs operating temperature. The new combined technique was used to study other components: sealing glasses for SOFCs and optical glasses.

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Section: Model Sofc Samplesmentioning

confidence: 99%

“…Thin-film (3-5 μm) solid electrolyte is also optically transparent due to its low thickness. Cathode electrode was deposited following the route optimized previously (40)(41)(42)(43).…”

Section: Model Sofc Samplesmentioning

confidence: 99%

Application of High-Temperature Raman Spectroscopy (RS) for Studies of Electrochemical Processes in Solid Oxide Fuel Cells (SOFCs) and Functional Properties of their Components

et al. 2021

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“…Electrode deposition routine was optimized in previous work (60)(61)(62). Both electrodes were deposited via screen print technique using ceramic-organic screen print pastes by means of Ekra E2 (Germany) machine.…”

Section: Model Samplesmentioning

confidence: 99%

Raman Spectra Studies of Inner “Anode | Electrolyte” Interface on ESC and ASC SOFCs

Eliseeva¹,

Агарков²,

Бурмистров³

et al. 2019

ECS Trans.

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In this work we present the results of in-situ case studies of fuel oxidation at the SOFC anode for anode-supported cells with thin-film electrolyte deposited by magnetron sputtering technique in comparison with studies carried out on optically transparent single-crystal membrane based electrolyte-supported model SOFC. Changes of the valence state of Ce ions were studied under different current loads applied to the cell, these changes were indicated in the Raman spectra obtained from inner interface of electrolyte membrane and anode electrode. Area of the corresponding peak in Raman spectra of ceria was studied for different working conditions for both cells constructions. Special processing technique gave opportunity to obtain more relevant data.

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“…The research group at the Osipyan Institute of Solid State Physics RAS conducts systematic R&D in the field of SOFC-based systems, including processing and characterization of novel materials and SOFC components (9)(10)(11)(12), fabrication of the membrane-electrode assemblies (MEAs) (2,13), and testing and optimization of the planar SOFC stacks and power generators. An important task in this direction is to ensure stable electrical and mechanical contacts between the steel current collector with oxide protective coating and SOFC cathode, enabling at least 10,000 h operation (14,15).…”

Section: Introductionmentioning

confidence: 99%

Optimization of Contact Cathode Composition Based on La0.8Sr0.2MnO3±δ for SOFC Stacks

et al. 2021

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The formation of stable contact layers with minimum electrical resistivity at the electrode/interconnector interface is an important task for planar SOFC stack fabrication. This work was centered on the search for optimum processing conditions of the La0.8Sr0.2MnO3±δ (LSM) based contact pastes without inorganic additives. The ball-milling conditions and contact paste composition were optimized taking into account the LSM particle size, sintering, a possibility of partial phase decomposition, and electrical conductivity of the resultant cathode contacts. Testing of the model SOFC stack with Crofer 22H interconnectors revealed sufficient adhesion, porosity, conductivity, and stability of porous LSM contact layers.

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Fabrication of membrane–electrode assemblies for solid-oxide fuel cells by joint sintering of electrodes at high temperature

Cited by 19 publications

References 17 publications

Application of High-Temperature Raman Spectroscopy (RS) for Studies of Electrochemical Processes in Solid Oxide Fuel Cells (SOFCs) and Functional Properties of their Components

Application of High-Temperature Raman Spectroscopy (RS) for Studies of Electrochemical Processes in Solid Oxide Fuel Cells (SOFCs) and Functional Properties of their Components

Raman Spectra Studies of Inner “Anode | Electrolyte” Interface on ESC and ASC SOFCs

Optimization of Contact Cathode Composition Based on La0.8Sr0.2MnO3±δ for SOFC Stacks

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