scholarly journals Ionic conductivity of YSZ/CZO multilayers with variable lattice mismatch

2015 ◽  
Vol 3 (5) ◽  
pp. 2378-2386 ◽  
Author(s):  
Weida Shen ◽  
Joshua L. Hertz
Keyword(s):  
Ionic Conductivity ◽  
Tensile Strain ◽  
Lattice Mismatch ◽  
Ion Conductivity ◽  
Yttria Stabilized Zirconia ◽  
Stabilized Zirconia ◽  
Oxygen Ion Conductivity ◽  
Oxygen Ion

Tensile strain in yttria-stabilized zirconia (YSZ) exhibited little impact on oxygen ion conductivity in multilayers composed of YSZ and Ce1−xZrxO2 (CZO).

scholarly journals Influence of microstructure on the cross-plane oxygen ion conductivity of yttria stabilized zirconia thin films

2012 ◽  
Vol 209 (8) ◽  
pp. 1414-1422 ◽  
Author(s):  
Meike V. F. Schlupp ◽  
Barbara Scherrer ◽  
Huan Ma ◽  
Jan G. Grolig ◽  
Julia Martynczuk ◽  
...  
Keyword(s):  
Thin Films ◽  
Ion Conductivity ◽  
Yttria Stabilized Zirconia ◽  
Stabilized Zirconia ◽  
Oxygen Ion Conductivity ◽  
Oxygen Ion ◽  
The Cross

scholarly journals Dense lanthanum silicate oxyapatite ceramics obtained by uniaxial pressing and slip casting

2018 ◽  
Vol 50 (4) ◽  
pp. 433-443
Author(s):  
Ramiro Toja ◽  
Nicolás Rendtorffa ◽  
Esteban Agliettia ◽  
Tetsuo Uchikoshi ◽  
Yoshio Sakka ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Vickers Hardness ◽  
Growth Process ◽  
Slip Casting ◽  
Yttria Stabilized Zirconia ◽  
Stabilized Zirconia ◽  
Oxygen Ion Conductivity ◽  
Oxygen Ion ◽  
Slip Cast ◽  
Lanthanum Silicate

Lanthanum silicate oxyapatite (LSO) is a promising ion conductive ceramic material, which has higher oxygen ion conductivity at intermediate temperatures (600-800?C) compared to yttria-stabilized zirconia. Its mechanical properties, though important for any of its applications, have been scarcely reported. In this study, we compare apparent densification, open porosity and Vickers hardness of samples conformed by uniaxial pressing and slip casting and fired up to 1600?C. Colloidal processing was optimized for slip casting in order to get high green densities. At sintering temperatures higher than 1400?C, both processing routes yielded comparable densities, although uniaxially pressed samples show slightly better mechanical properties, evidencing that slip cast ones already underwent a grain growth process.

scholarly journals Reduced ionic conductivity in biaxially compressed ceria

RSC Advances ◽  
2014 ◽  
Vol 4 (41) ◽  
pp. 21625-21630 ◽  
Author(s):  
Weida Shen ◽  
Jun Jiang ◽  
Joshua L. Hertz
Keyword(s):  
Thin Film ◽  
Ionic Conductivity ◽  
Compressive Strain ◽  
Ion Conductivity ◽  
Oxygen Ion Conductivity ◽  
Oxygen Ion

Thin film multilayers composed of Y2O3-doped CeO2(YDC) with CeO2, with Ce0.70Zr0.30O2(CZO30), or with Ce0.55Zr0.45O2(CZO45) were fabricated to systematically quantify the effect of biaxial compressive strain on oxygen ion conductivity in YDC.

Strain-modified ionic conductivity in rare-earth substituted ceria: effects of migration direction, barriers, and defect-interactions

2021 ◽  
Author(s):  
George F. Harrington ◽  
Sunho Kim ◽  
Kazunari Sasaki ◽  
Harry L. Tuller ◽  
Steffen Grieshammer
Keyword(s):  
Rare Earth ◽  
Ionic Conductivity ◽  
Computational Study ◽  
Ion Conductivity ◽  
Oxygen Ion Conductivity ◽  
Migration Direction ◽  
Oxygen Ion ◽  
Defect Interactions

The effects of migration direction, barriers, and defect-interactions on the strain-modified oxygen-ion conductivity in rare-earth substituted ceria are deconvoluted in this combined experimental and computational study.

Relationship between Phonon Parameters and Oxygen Ion Conductivity for Al-Yb Co-Doped Zirconia

2013 ◽  
Vol 582 ◽  
pp. 107-110 ◽  
Author(s):  
Takashi Teranishi ◽  
Nami Matsubara ◽  
Hidetaka Hayashi ◽  
Akira Kishimoto
Keyword(s):  
Lattice Vibration ◽  
Ion Conductivity ◽  
Stabilized Zirconia ◽  
Zirconia Ceramics ◽  
Oxygen Ion Conductivity ◽  
Oxygen Ion ◽  
Ion Conductivities ◽  
Damping Parameter ◽  
The Relationship ◽  
Co Doped

The relationship between the optical phonon parameters and the oxygen ion conductivities were investigated for AlYb co-doped zirconia ceramics. Intrinsic intragrain ion conductivity, σdc, decreased with increasing Al loading into ytterbia-stabilized zirconia, while the damping parameter of the lattice vibration, γ1TO, increased. This phenomenon agreed with findings of our previous study, which revealed a relationship between the σdc and the γ1TO for zirconia-based ion conductors.

Crystal Structure and Oxygen Ion Conductivity of Ga[sup 3+] Co-Doped Scandia-Stabilized Zirconia

2010 ◽  
Vol 157 (11) ◽  
pp. B1707 ◽  
Author(s):  
Yusuke Ota ◽  
Masaki Ikeda ◽  
Satomi Sakuragi ◽  
Yuki Iwama ◽  
Noriyuki Sonoyama ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Ion Conductivity ◽  
Stabilized Zirconia ◽  
Oxygen Ion Conductivity ◽  
Oxygen Ion ◽  
Co Doped

Characterizations of Synthetic 8mol% YSZ with Comparison to 3mol %YSZ for HT-SOFC

2020 ◽  
Vol 38 (4A) ◽  
pp. 491-500
Author(s):  
Abeer F. Al-Attar ◽  
Saad B. H. Farid ◽  
Fadhil A. Hashim
Keyword(s):  
Ionic Conductivity ◽  
Electrochemical Impedance ◽  
Structural Information ◽  
Impedance Analysis ◽  
High Energy ◽  
Yttria Stabilized Zirconia ◽  
X Ray Diffraction ◽  
Stabilized Zirconia ◽  
Powder Morphology ◽  
X Ray

In this work, Yttria (Y2O3) was successfully doped into tetragonal 3mol% yttria stabilized Zirconia (3YSZ) by high energy-mechanical milling to synthesize 8mol% yttria stabilized Zirconia (8YSZ) used as an electrolyte for high temperature solid oxide fuel cells (HT-SOFC). This work aims to evaluate the densification and ionic conductivity of the sintered electrolytes at 1650°C. The bulk density was measured according to ASTM C373-17. The powder morphology and the microstructure of the sintered electrolytes were analyzed via Field Emission Scanning Electron Microscopy (FESEM). The chemical analysis was obtained with Energy-dispersive X-ray spectroscopy (EDS). Also, X-ray diffraction (XRD) was used to obtain structural information of the starting materials and the sintered electrolytes. The ionic conductivity was obtained through electrochemical impedance spectroscopy (EIS) in the air as a function of temperatures at a frequency range of 100(mHz)-100(kHz). It is found that the 3YSZ has a higher density than the 8YSZ. The impedance analysis showed that the ionic conductivity of the prepared 8YSZ at 800°C is0.906 (S.cm) and it was 0.214(S.cm) of the 3YSZ. Besides, 8YSZ has a lower activation energy 0.774(eV) than that of the 3YSZ 0.901(eV). Thus, the prepared 8YSZ can be nominated as an electrolyte for the HT-SOFC.

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