Oxygen diffusion in SrZrO3

Nivot, Christelle; Legros, C.; Lesage, B.; Kilo, Martin; Argirusis, Christos

doi:10.1016/j.ssi.2009.05.008

Cited by 21 publications

(11 citation statements)

References 25 publications

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“…In the case of Sr diffusion a SrZrO 3 ‐like phase formation is probable. Strontium zirconate has high melting point, low thermal conductivity, a high thermal expansion coefficient and high thermal and chemical stability 29. When acceptor‐doped, it exhibits proton conductivity at high temperature 29.…”

Section: Resultsmentioning

confidence: 99%

“…Strontium zirconate has high melting point, low thermal conductivity, a high thermal expansion coefficient and high thermal and chemical stability 29. When acceptor‐doped, it exhibits proton conductivity at high temperature 29. However, its ionic conductivity is very low, so its presence can negatively impact the properties of the electrolyte.…”

Section: Resultsmentioning

confidence: 99%

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Interactions between components of SrTi_0.98Nb_0.02O_3−δ–YSZ and SrTi_0.98Nb_0.02O_3−δ–CeO₂ composites

Bochentyn

Karczewski

Gazda

et al. 2012

Physica Status Solidi (a)

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Composites consisting of SrTiO 3 -based perovskite and either yttria-stabilized zirconia or ceria were investigated. The mechanical compatibility and possible inter-diffusion between phases were characterized by scanning electron microscopy, X-ray diffraction, and energy-dispersive X-ray spectroscopy. A gradual disappearance of Ce-containing phases with an increase in the temperature of reduction in hydrogen was noticed. Moreover, a diffusion of Sr, Ti, and Ce was observed between the composites and the yttria-stabilized zirconia electrolyte support in the conditions of high temperature (1300-1400 8C) reduction in H 2 .

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Interactions between components of SrTi_0.98Nb_0.02O_3−δ–YSZ and SrTi_0.98Nb_0.02O_3−δ–CeO₂ composites

Bochentyn

Karczewski

Gazda

et al. 2012

Physica Status Solidi (a)

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“…The reaction mechanisms of the electrochemical site blocked by the interlayer reaction product, SrZrO 3 , could be different at low temperature (<750 8C) leading to larger activation energy. SrZrO 3 , however, may have oxygen ion conductivity at high temperature [26] which may attribute partially to the electrochemical reaction at high temperature (>750 8C). We will contribute about this different behavior of the activation energy occurred by interfacial reaction product, SrZrO 3 , in further research.…”

Section: Electrochemical Propertiesmentioning

confidence: 99%

Ce0.8Gd0.2O2 modification on La0.6Sr0.4Co0.2Fe0.8O3 cathode for improving a cell performance in intermediate temperature solid oxide fuel cells

Yun

Han

Yoon

et al. 2011

Journal of Industrial and Engineering Chemistry

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“…Formation of secondary phase like SrZrO 3 ,La 2 Zr 2 O 7 at LSCF/YSZ interface, if any, should be reflected in the measured Ohmic resistance as secondary phases formed are not only a poor O 2conductor, but also a poor electronic conductor [57]. Formation of secondary phase like SrZrO 3 ,La 2 Zr 2 O 7 at LSCF/YSZ interface, if any, should be reflected in the measured Ohmic resistance as secondary phases formed are not only a poor O 2conductor, but also a poor electronic conductor [57].…”

Section: Polarization and Ohmic Studies On Conventional Electrodesmentioning

confidence: 99%

“…In the present investigation, studies pertaining to the influence of firing temperature on the reactivity between LSCF and YSZ and the effect of formation of secondary phases on the Ohmic resistance of the system and polarization resistance of LSCF cathodes are carried out. Formation of secondary phase like SrZrO 3 ,La 2 Zr 2 O 7 at LSCF/YSZ interface, if any, should be reflected in the measured Ohmic resistance as secondary phases formed are not only a poor O 2conductor, but also a poor electronic conductor [57].…”

Section: Polarization and Ohmic Studies On Conventional Electrodesmentioning

confidence: 99%

Microstructure and Polarization Studies on Interlayer Free La_0.65Sr_0.3Co_0.2Fe_0.8O_3–_δ Cathodes Fabricated on Yttria Stabilized Zirconia by Solution Precursor Plasma Spraying

et al. 2016

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Nano‐structured cathodes of La0.65Sr0.3Co0.2Fe0.8O3–δ (LSCF) are fabricated by solution precursor plasma spraying (SPPS) on yttria stabilized zirconia (YSZ) electrolytes (LSCF‐SPPS‐YSZ). Phase pure LSCF is obtained at all plasma power. Performances of LSCF‐SPPS‐YSZ cathodes are compared with conventionally prepared LSCF cathodes on YSZ (LSCF‐C‐YSZ) and gadolinium doped ceria (GDC) (LSCF‐C‐GDC) electrolytes. High Rp is observed in the LSCF‐C‐YSZ (∼42 Ohm cm2 at 700 °C) followed by LSCF‐C‐GDC (Rp ∼ 1.5 Ohm cm2 at 700 °C) cathodes. Performance of the LSCF‐SPPS‐YSZ cathodes (Rp ∼ 0.1 Ohm cm2 at 700 °C) is found to be even superior to the performance of LSCF‐C‐GDC cathodes. High performance in LSCF‐SPPS‐YSZ cathodes is attributed to its nano‐structure and absence of any interfacial insulating phase which may be attributed to the low temperature at the interaction point of LSCF and YSZ and low interaction time between LSCF and YSZ during SPPS process. In the time scale of 100 h, no change in the polarization resistances is observed at 750 °C. Based on the literature and from the present studies it can be stated that SOFC with YSZ electrolyte and LSCF‐SPPS‐YSZ cathode can be operated at 750 °C for a longer duration of time and good performance can probably be achieved.

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Oxygen diffusion in SrZrO3

Cited by 21 publications

References 25 publications

Interactions between components of SrTi_0.98Nb_0.02O_3−δ–YSZ and SrTi_0.98Nb_0.02O_3−δ–CeO₂ composites

Interactions between components of SrTi_0.98Nb_0.02O_3−δ–YSZ and SrTi_0.98Nb_0.02O_3−δ–CeO₂ composites

Ce0.8Gd0.2O2 modification on La0.6Sr0.4Co0.2Fe0.8O3 cathode for improving a cell performance in intermediate temperature solid oxide fuel cells

Microstructure and Polarization Studies on Interlayer Free La_0.65Sr_0.3Co_0.2Fe_0.8O_3–_δ Cathodes Fabricated on Yttria Stabilized Zirconia by Solution Precursor Plasma Spraying

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Oxygen diffusion in SrZrO3

Cited by 21 publications

References 25 publications

Interactions between components of SrTi0.98Nb0.02O3−δ–YSZ and SrTi0.98Nb0.02O3−δ–CeO2 composites

Interactions between components of SrTi0.98Nb0.02O3−δ–YSZ and SrTi0.98Nb0.02O3−δ–CeO2 composites

Ce0.8Gd0.2O2 modification on La0.6Sr0.4Co0.2Fe0.8O3 cathode for improving a cell performance in intermediate temperature solid oxide fuel cells

Microstructure and Polarization Studies on Interlayer Free La0.65Sr0.3Co0.2Fe0.8O3–δ Cathodes Fabricated on Yttria Stabilized Zirconia by Solution Precursor Plasma Spraying

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Interactions between components of SrTi_0.98Nb_0.02O_3−δ–YSZ and SrTi_0.98Nb_0.02O_3−δ–CeO₂ composites

Interactions between components of SrTi_0.98Nb_0.02O_3−δ–YSZ and SrTi_0.98Nb_0.02O_3−δ–CeO₂ composites

Microstructure and Polarization Studies on Interlayer Free La_0.65Sr_0.3Co_0.2Fe_0.8O_3–_δ Cathodes Fabricated on Yttria Stabilized Zirconia by Solution Precursor Plasma Spraying