Deposition and Characterization of Y-doped CaZrO 3 Electrolyte Film on a Porous SrTi 0.8 Fe 0.2 O 3-δ Substrate

Dunyushkina, L. A.; Панкратов, А. А.; Горелов, В. П.; Brouzgou, A.; Tsiakaras, Panagiotis

doi:10.1016/j.electacta.2016.03.120

Cited by 21 publications

(2 citation statements)

References 36 publications

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“…CaZrO 3 is a typical electrostrictive material. It has a large anisotropic dielectric tensor, and shows wide applications in solid electrolytes, − sensors, − refractories, and hydration-resistant materials . At high pressures, theoretical research on CaZrO 3 mainly focuses on first-principles calculations of structure, energy stability, and electronic and lattice dynamics properties. − Experimentally, the structures of CaZrO 3 under high pressures have been investigated by synchrotron radiation X-ray diffraction measurements, and it has been confirmed that the orthorhombic phase of CaZrO 3 can be stable up to 30 GPa. , In this paper, we will reveal the pressure dependence of electrostriction of CaZrO 3 from the analysis of electrochemical impedance spectra.…”

Section: Introductionmentioning

confidence: 99%

Electrostrictive Effect of Materials under High Pressure Revealed by Electrochemical Impedance Spectroscopy

et al. 2021

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Because electrostrictive materials are completely sealed and confined in a diamond anvil cell (DAC), their strain and atomic displacement excited by electric field cannot be in situ measured by general measurements. Therefore, an experimental study on the electrostrictive properties of materials under high pressures becomes an unexploited field. In this paper, we study the electrostrictive effect of CaZrO3 under high pressures with electrochemical impedance spectroscopy. In the impedance spectra, the electrostrictive effect is presented clearly in the form of an inductive loop. Fitted with the equivalent circuit method, information about strain and its evolution with pressure can be obtained.

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Section: Introductionmentioning

confidence: 99%

Electrostrictive Effect of Materials under High Pressure Revealed by Electrochemical Impedance Spectroscopy

et al. 2021

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“…The high performance of SOFCs with a thin-film electrolyte was demonstrated in [6][7][8][9][10][11][12][13][14]. However, thin-film SOFC efficiency was reported to be sensitive to the diffusional interaction between the electrolyte and the electrodes [4,[15][16][17][18][19]. Thin films usually exhibit a nanograined structure, which enhances the effect of material interaction as diffusion along the grain boundaries is much faster than in the grain bulk [16,19,20].…”

Section: Introductionmentioning

confidence: 99%

Transport Properties of Film and Bulk Sr0.98Zr0.95Y0.05O3−δ Membranes

2020

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In electrode-supported solid oxide fuel cells (SOFCs) with a thin electrolyte, the electrolyte performance can be affected by its interaction with the electrode, therefore, it is particularly important to study the charge transport properties of thin electrode-supported electrolytes. The transport numbers of charged species in Ni-cermet supported Sr0.98Zr0.95Y0.05O3−δ (SZY) membranes were studied and compared to those of the bulk membrane. SZY films of 2.5 μm thickness were fabricated by the chemical solution deposition technique. It was shown that the surface layer of the films contained 1.5–2 at.% Ni due to Ni diffusion from the substrate. The Ni-cermet supported 2.5 μm-thick membrane operating in the fuel cell mode was found to possess the effective transport number of oxygen ions of 0.97 at 550 °C, close to that for the bulk SZY membrane (0.99). The high ionic transport numbers indicate that diffusional interaction between SZY films and Ni-cermet supporting electrodes does not entail electrolyte degradation. The relationship between SZY conductivity and oxygen partial pressure was derived from the data on effective conductivity and ionic transport numbers for the membrane operating under two different oxygen partial pressure gradients—in air/argon and air/hydrogen concentration cells.

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Improved ceramic and electrical properties of CaZrO3-based proton-conducting materials prepared by a new convenient combustion synthesis method

Lyagaeva

Данилов

Корона

et al. 2017

Ceramics International

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Deposition and Characterization of Y-doped CaZrO 3 Electrolyte Film on a Porous SrTi 0.8 Fe 0.2 O 3-δ Substrate

Cited by 21 publications

References 36 publications

Electrostrictive Effect of Materials under High Pressure Revealed by Electrochemical Impedance Spectroscopy

Electrostrictive Effect of Materials under High Pressure Revealed by Electrochemical Impedance Spectroscopy

Transport Properties of Film and Bulk Sr0.98Zr0.95Y0.05O3−δ Membranes

Improved ceramic and electrical properties of CaZrO3-based proton-conducting materials prepared by a new convenient combustion synthesis method

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