Electrophoretic Deposition and Characterization of the Doped BaCeO3 Barrier Layers on a Supporting Ce0.8Sm0.2O1.9 Solid-State Electrolyte

Калинина, Е. Г.; Shubin, Kirill; Pikalova, E. Yu.

doi:10.3390/membranes12030308

Cited by 13 publications

(18 citation statements)

References 60 publications

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“…A suspension based on LLZ powder with a concentration of 10 g/L was prepared in a mixed dispersion medium of isopropanol/acetylacetone in a ratio of 70/30 vol.%. The composition and ratio of the dispersion medium were chosen based on our previous investigations [ 25 , 30 ]. UST of LLZ suspension was carried out for 5–125 min at 25 °C using an ultrasonic bath (UZV-13/150-TH).…”

Section: Methodsmentioning

confidence: 99%

“…The EPD method is used in the creation of high-temperature electrochemical devices, such as solid oxide fuel cells (SOFCs), namely, in the formation of solid electrolyte layers, for example, based on doped zirconium dioxide and doped cerium dioxide, as well as barium cerate [ 20 , 21 , 22 ]. The substrates used should possess electrical conductivity for the implementation of EPD; however, it is possible to deposit coatings on non-conductive substrates by creating a conductive sublayer on their surface, for example, graphite or conductive polymer–polypyrrole [ 23 , 24 , 25 ]. For non-conductive substrates with a sufficient level of through porosity, it is possible to carry out direct EPD due to the appearance of conductive channels in the substrate’s porous structure.…”

Section: Introductionmentioning

confidence: 99%

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Electrophoretic Deposition and Characterization of Thin-Film Membranes Li7La3Zr2O12

et al. 2023

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In the presented study, films from tetragonal Li7La3Zr2O12 were obtained by electrophoretic deposition (EPD) for the first time. To obtain a continuous and homogeneous coating on Ni and Ti substrates, iodine was added to the Li7La3Zr2O12 suspension. The EPD regime was developed to carry out the stable process of deposition. The influence of annealing temperature on phase composition, microstructure, and conductivity of membranes obtained was studied. It was established that the phase transition from tetragonal to low-temperature cubic modification of solid electrolyte was observed after its heat treatment at 400 °C. This phase transition was also confirmed by high-temperature X-ray diffraction analysis of Li7La3Zr2O12 powder. Increasing the annealing temperature leads to the formation of additional phases in the form of fibers and their growth from 32 (dried film) to 104 μm (annealed at 500 °C). The formation of this phase occurred due to the chemical reaction of Li7La3Zr2O12 films obtained by electrophoretic deposition with air components during heat treatment. The total conductivity of Li7La3Zr2O12 films obtained has values of ~10−10 and ~10−7 S cm−1 at 100 and 200 °C, respectively. The method of EPD can be used to obtain solid electrolyte membranes based on Li7La3Zr2O12 for all-solid-state batteries.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Electrophoretic Deposition and Characterization of Thin-Film Membranes Li7La3Zr2O12

et al. 2023

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“…Taking into account the results of our previous study [ 39 ], a mixed dispersion medium of isopropanol/acetylacetone in a ratio of 70/30 vol.% was chosen for the preparation of the suspensions based on the electrolyte materials. Suspensions of SDC-gn + 5 wt% SDC-lec and BCS-CuO with a concentration of 10 g/L were prepared by weighing the powders and then sonication using a UZV-13/150-TH ultrasonic bath with a generator power of 210 W at the operating frequency of 22 kHz for 5–125 min (at 25 °C).…”

Section: Methodsmentioning

confidence: 99%

“…Moreover, added in a small amount as a sintering additive, CuO can improve not only sinterability but also the grain boundary (GB) conductivity of doped BaCeO 3 , lowering the GB density [ 38 ]. Recently, we demonstrated good compatibility of electrophoretically deposited Cu-doped BaCe 0.8 Sm 0.2 O 3 barrier layers (~20 μm) with a dense SDC substrate (550 μm) [ 39 ].…”

Section: Introductionmentioning

confidence: 99%

Direct Electrophoretic Deposition and Characterization of Thin-Film Membranes Based on Doped BaCeO3 and CeO2 for Anode-Supported Solid Oxide Fuel Cells

2022

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In this work, a technology was developed for the formation of BaCe0.8Sm0.2O3+1 wt% CuO (BCS-CuO)/Ce0.8Sm0.2O1.9 (SDC) thin-film electrolyte membranes for intermediate-temperature solid oxide fuel cells (IT-SOFCs) on porous NiO-BCS-CuO anode substrates using direct electrophoretic deposition (EPD). The effect of increasing the zeta potential when modifying the base suspension of a micro-sized SDC-gn powder (glycine–nitrate method) with the addition of a SDC-lec nanopowder (laser evaporation–condensation) was investigated. Dependences of the current strength on the deposition time and the deposited weight on the EPD voltage were obtained, and evolution of the morphology of the coatings during the modification of the SDC-gn suspension and a suspension of BCS-CuO powder was studied. The compatibility of the shrinkage kinetics of the SDC, the BCS-CuO electrolyte coatings and the NiO-BCS-CuO anode substrate was studied during the high-temperature sintering. Dense BCS-CuO/SDC films of different thicknesses were obtained for the first time on porous NiO-BCS-CuO anode substrates and comprehensive microstructural and electrochemical studies were carried out. The developed technology can be applied to the formation of anode-supported SOFCs with thin-film electrolyte membranes.

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“…Anode-supported planar solid oxide fuel cells (SOFCs) are one of the most widespread types of fuel cells because they are suitable for operations at lower temperatures (below 800 °C) [ 1 ] due to ohmic resistance of thin (10 µm) film electrolyte substantially lower than that of electrolyte-supported cells [ 2 , 3 ].…”

Section: Introductionmentioning

confidence: 99%

Influence of Deposition Modes and Thermal Annealing on Residual Stresses in Magnetron-Sputtered YSZ Membranes

et al. 2022

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Thin-film electrolyte made of 8-mol% yttria stabilized zirconia (8YSZ) for solid oxide fuel cells (SOFCs) was fabricated on anode substrates using reactive magnetron sputtering of Zr-Y targets in a mixture of Ar and O2 gases. The deposition of 4–6 µm thin-film electrolyte was in the transition or oxide modes differing by the oxygen concentration in the sputtering atmosphere. The half-cell bending of the anode-supported SOFCs was measured to determine the residual stresses in the electrolyte films after the deposition and thermal annealing in air. The dependences were studied between the deposition modes, residual stresses in the films, and the SOFC performance. At 800 °C, the maximum power density of SOFCs ranged between 0.58 and 1.2 W/cm2 depending on the electrolyte deposition mode. Scanning electron microscopy was carried out to investigate the surface morphology and structure of the YSZ electrolyte films after thermal annealing. Additionally, an X-ray diffraction analysis of the YSZ electrolyte films was conducted for the synchrotron radiation beam during thermal annealing at different temperatures up to 1300 °C. It was found that certain deposition modes provide the formation of the YSZ electrolyte films with acceptable residual stresses (<1 GPa) at room temperature, including films deposited on large area anodes (100 × 100 mm2).

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Electrophoretic Deposition and Characterization of the Doped BaCeO3 Barrier Layers on a Supporting Ce0.8Sm0.2O1.9 Solid-State Electrolyte

Cited by 13 publications

References 60 publications

Electrophoretic Deposition and Characterization of Thin-Film Membranes Li7La3Zr2O12

Electrophoretic Deposition and Characterization of Thin-Film Membranes Li7La3Zr2O12

Direct Electrophoretic Deposition and Characterization of Thin-Film Membranes Based on Doped BaCeO3 and CeO2 for Anode-Supported Solid Oxide Fuel Cells

Influence of Deposition Modes and Thermal Annealing on Residual Stresses in Magnetron-Sputtered YSZ Membranes

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