Study on structural and electrical properties of layered perovskite-type oxide-ion conductor

2010 ◽  
Vol 124 (1) ◽  
pp. 305-311 ◽  
Author(s):  
Saba Beg ◽  
Ahlam Al-Alas ◽  
Niyazi A.S. Al-Areqi
Keyword(s):  
Electrical Properties ◽  
Layered Perovskite ◽  
Ion Conductor ◽  
Oxide Ion Conductor ◽  
Perovskite Type Oxide ◽  
Structural And Electrical Properties ◽  
Perovskite Type ◽  
Oxide Ion

High-Temperature Defect and Crystal Structure of Perovskite Type Oxide Ion Conductor La0.8Sr0.2Ga0.8Mg0.15Co0.05O3-δ

2019 ◽  
Vol 25 (2) ◽  
pp. 1701-1708 ◽  
Author(s):  
Shota Nakayama ◽  
Shin-ichi Hashimoto ◽  
Kazuhisa Sato ◽  
Keiji Yashiro ◽  
Koji Amezawa ◽  
...  
Keyword(s):  
Crystal Structure ◽  
High Temperature ◽  
Ion Conductor ◽  
Oxide Ion Conductor ◽  
Perovskite Type Oxide ◽  
Perovskite Type ◽  
Oxide Ion

scholarly journals Structural and electrical properties of layered perovskite type Pr2Ti2O7: experimental and theoretical investigations

2015 ◽  
Vol 3 (17) ◽  
pp. 4570-4584 ◽  
Author(s):  
Sadequa J. Patwe ◽  
Vasundhara Katari ◽  
Nilesh P. Salke ◽  
Sudhanshu K. Deshpande ◽  
Rekha Rao ◽  
...  
Keyword(s):  
Thermal Properties ◽  
Electrical Properties ◽  
Spectroscopic Studies ◽  
Layered Perovskite ◽  
Raman Spectroscopic ◽  
Structural And Electrical Properties ◽  
Theoretical Investigations ◽  
Higher Temperature ◽  
Perovskite Type

In this communication we report the details of the structural and thermal properties of monoclinic layered perovskite type Pr2Ti2O7 (PTO) using ambient to higher temperature XRD and Raman spectroscopic studies.

scholarly journals The crystal structure and electrical properties of the oxide ion conductor Ba3WNbO8.5

2018 ◽  
Vol 6 (13) ◽  
pp. 5290-5295 ◽  
Author(s):  
K. S. McCombie ◽  
E. J. Wildman ◽  
S. Fop ◽  
R. I. Smith ◽  
J. M. S. Skakle ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Electrical Properties ◽  
The Novel ◽  
Ion Conductor ◽  
Oxide Ion Conductor ◽  
Oxide Ion

The crystal structure of the novel oxide ion conductor Ba3WNbO8.5.

scholarly journals Dual Oxygen Defects in Layered La1.2Sr0.8−xBaxInO4+δ (x = 0.2, 0.3) Oxide-Ion Conductors: A Neutron Diffraction Study

Materials ◽  
2019 ◽  
Vol 12 (10) ◽  
pp. 1624 ◽  
Author(s):  
Loreto Troncoso ◽  
Carlos Mariño ◽  
Mauricio D. Arce ◽  
José Antonio Alonso
Keyword(s):  
Oxygen Vacancies ◽  
Parent Compound ◽  
Layered Perovskite ◽  
Total Conductivity ◽  
Interstitial Oxygen ◽  
Ionic Conductors ◽  
Ion Conductor ◽  
Oxide Ion Conductor ◽  
Oxide Ion ◽  
Oxygen Atoms

The title compounds exhibit a K2NiF4-type layered perovskite structure; they are based on the La1.2Sr0.8InO4+δ oxide, which was found to exhibit excellent features as fast oxide-ion conductor via an interstitial oxygen mechanism. These new Ba-containing materials were designed to present a more open framework to enhance oxygen conduction. The citrate-nitrate soft-chemistry technique was used to synthesize such structural perovskite-type materials, followed by annealing in air at moderate temperatures (1150 °C). The subtleties of their crystal structures were investigated from neutron powder diffraction (NPD) data. They crystallize in the orthorhombic Pbca space group. Interstitial O3 oxygen atoms were identified by difference Fourier maps in the NaCl layer of the K2NiF4 structure. At variance with the parent compound, conspicuous oxygen vacancies were found at the O2-type oxygen atoms for x = 0.2, corresponding to the axial positions of the InO6 octahedra. The short O2–O3 distances and the absence of steric impediments suggest a dual oxygen-interstitial mechanism for oxide-ion conduction in these materials. Conductivity measurements show that the activation energy values are comparable to those typical of ionic conductors working by simple vacancy mechanisms (~1 eV). The increment of the total conductivity for x = 0.2 can be due to the mixed mechanism driving both oxygen vacancies and interstitials, which is original for these potential electrolytes for solid-oxide fuel cells.

High Oxide Ion Conductivity of (Ba1-x-ySrxLay)InO2.5+y/2 Members Derived from the Ba2In2O5 System

2005 ◽  
Vol 242-244 ◽  
pp. 159-168 ◽  
Author(s):  
Katsuyoshi Kakinuma ◽  
Hiroshi Yamamura ◽  
Tooru Atake
Keyword(s):  
Ion Mobility ◽  
Ion Conductivity ◽  
Ion Conductor ◽  
Oxide Ion Conductor ◽  
Oxide Ion Conductivity ◽  
Maximum Value ◽  
Solid Solution System ◽  
Perovskite Type ◽  
Oxide Ion ◽  
Key Parameter

We have discovered a high oxide ion conductor within the perovskite-type (Ba1-x-ySrxLay)InO2.5+y/2 solid-solution system. The system was derived from brownmillerite-type Ba2In2O5, which possessed a ordered oxide ion vacancies. When we doped La3+ into the Ba site, the vacancy changed to a disordered state. The oxide ion conductivity increased with the amount of doped La3+, reaching a maximum value of 0.12 (S/cm) at 800 oC in (Ba0.3Sr0.2La0.5)InO2.75, a level exceeding that of yttria-stabilized zirconia. The oxide ion conductivity of this system was strongly dependent on the unit cell free volume, which appears to be the key parameter governing oxide ion mobility.

Sign in / Sign up

Export Citation Format

Share Document