Thermal stability and phase transformation in fully indium oxide (InO 1.5 ) stabilized zirconia

Piva, Roger Honorato; Piva, D.H.; Morelli, M. R.

doi:10.1016/j.matchar.2016.11.012

Cited by 2 publications

(1 citation statement)

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“…SRL exhibits the symmetry and crystallography similar with the YSZ electrolyte, characterized by the {111} SRL lattice planes with inter-planar spacing of 0.29 nm. This is supported by the diffractogram at the SRL/YSZ interface, showing a single YSZ cubic phase pattern, along [1 12 ] YSZ zone axis 65 (see the inset in Fig. 8).…”

Section: Lscf/ysz Interfaces After Polarization For 1 H-figurementioning

confidence: 56%

A FIB-STEM Study of Strontium Segregation and Interface Formation of Directly Assembled La_0.6Sr_0.4Co_0.2Fe_0.8O_3-δCathode on Y₂O₃-ZrO₂Electrolyte of Solid Oxide Fuel Cells

Saunders

Chen

et al. 2018

J. Electrochem. Soc.

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Electrode/electrolyte interface plays a critical role in the performance and stability of solid oxide fuel cells (SOFCs). Here, interface formation, Sr segregation and reaction of directly assembled La 0.6 Sr 0.4 Co 0.2 Fe 0.8 O 3-δ (LSCF) cathode on barrier-layer-free Y 2 O 3 -ZrO 2 (YSZ) electrolyte are studied at 1000 mAcm −2 and 750 • C using focused ion beam and scanning transmission electron microscopy (FIB-STEM) techniques. The results indicate that polarization promotes the formation of LSCF/YSZ interface with a high level of periodicity and symmetry but no amorphous phases or solid solutions. Further polarization induces the Sr segregation and diffusion toward the LSCF/YSZ interface, forming Sr rich layer (SRL, primarily SrO) at LSCF and YSZ interface. Segregated Sr species are highly mobile and deposition of SrO occurs at the LSCF/YSZ interface as well as on the YSZ electrolyte surface. The reaction between SRL and YSZ is fast, forming SrZrO 3 secondary phase. The growth of SrZrO 3 phase at the interface are affected by the crystallography lattice plane orientation of the YSZ electrolyte, forming a coherence interface between SrZrO 3 and YSZ electrolyte. Further polarization accelerates Sr segregation and formation of the SrZrO 3 reaction layer, leading to the disintegration of LSCF structure at the interface. The results indicate that chemical reaction between LSCF and YSZ occurs at 750 • C under polarization conditions, kinetically induced by the segregated SrO at the interface and on the YSZ electrolyte surface.

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Section: Lscf/ysz Interfaces After Polarization For 1 H-figurementioning

confidence: 56%

A FIB-STEM Study of Strontium Segregation and Interface Formation of Directly Assembled La_0.6Sr_0.4Co_0.2Fe_0.8O_3-δCathode on Y₂O₃-ZrO₂Electrolyte of Solid Oxide Fuel Cells

Saunders

Chen

et al. 2018

J. Electrochem. Soc.

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India-doped zirconia multi-layered thin film synthesized by atomic layer deposition for IT-SOFCs: Synthesis and electrochemical properties

Benamira

Niinistö

Ringuedé

et al. 2020

Materials Chemistry and Physics

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Thermal stability and phase transformation in fully indium oxide (InO 1.5 ) stabilized zirconia

Cited by 2 publications

References 64 publications

A FIB-STEM Study of Strontium Segregation and Interface Formation of Directly Assembled La_0.6Sr_0.4Co_0.2Fe_0.8O_3-δCathode on Y₂O₃-ZrO₂Electrolyte of Solid Oxide Fuel Cells

A FIB-STEM Study of Strontium Segregation and Interface Formation of Directly Assembled La_0.6Sr_0.4Co_0.2Fe_0.8O_3-δCathode on Y₂O₃-ZrO₂Electrolyte of Solid Oxide Fuel Cells

India-doped zirconia multi-layered thin film synthesized by atomic layer deposition for IT-SOFCs: Synthesis and electrochemical properties

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Thermal stability and phase transformation in fully indium oxide (InO 1.5 ) stabilized zirconia

Cited by 2 publications

References 64 publications

A FIB-STEM Study of Strontium Segregation and Interface Formation of Directly Assembled La0.6Sr0.4Co0.2Fe0.8O3-δCathode on Y2O3-ZrO2Electrolyte of Solid Oxide Fuel Cells

A FIB-STEM Study of Strontium Segregation and Interface Formation of Directly Assembled La0.6Sr0.4Co0.2Fe0.8O3-δCathode on Y2O3-ZrO2Electrolyte of Solid Oxide Fuel Cells

India-doped zirconia multi-layered thin film synthesized by atomic layer deposition for IT-SOFCs: Synthesis and electrochemical properties

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A FIB-STEM Study of Strontium Segregation and Interface Formation of Directly Assembled La_0.6Sr_0.4Co_0.2Fe_0.8O_3-δCathode on Y₂O₃-ZrO₂Electrolyte of Solid Oxide Fuel Cells

A FIB-STEM Study of Strontium Segregation and Interface Formation of Directly Assembled La_0.6Sr_0.4Co_0.2Fe_0.8O_3-δCathode on Y₂O₃-ZrO₂Electrolyte of Solid Oxide Fuel Cells