Journal ArticleDOI
Electrical conductivity and thermoelectric power measurements of Y2Ti2O7
TLDR
In this paper, total electrical conductivity and thermoelectric power measurements of polycrystalline Y 2 Ti 2 O 7 were made at 1373, 1273, 1173 and 1073 K under the oxygen partial pressure, p O 2, between 10 −23 and 1.0 atm using Ar+O 2, H 2 +H 2 O, H 2+CO 2, and CO +CO 2 and gas mixtures.About:
This article is published in Solid State Ionics.The article was published on 1998-12-01. It has received 43 citations till now. The article focuses on the topics: Thermoelectric materials & Thermoelectric effect.read more
Citations
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Journal ArticleDOI
Progress in material selection for solid oxide fuel cell technology: A review
TL;DR: In this paper, the authors provide a comprehensive review with respect to the structure, chemistry, design and selection of materials, underlying mechanisms, and performance of each SOFC component, and it opens up the future directions towards pursuing SOFC research.
Journal ArticleDOI
Oxygen ionic and electronic transport in apatite-type La10−x(Si,Al)6O26±δ
TL;DR: In this article, the ion transference numbers, measured by modified faradaic efficiency technique, vary in the range 0.9949-0.9997 in air and increase on reducing oxygen partial pressure due to decreasing p-type electronic conduction.
Journal ArticleDOI
Transport properties and stability of Ni-containing mixed conductors with perovskite- and K2NiF4-type structure
Vladislav V. Kharton,Aleksey A. Yaremchenko,Aliaksandr L. Shaula,Mikhail V. Patrakeev,E.N. Naumovich,D.I Logvinovich,Jorge R. Frade,Fernando M.B. Marques +7 more
TL;DR: In this article, a series of Ni-containing phases, including La2Ni1−xMxO4+δ (M=Co, Cu; x=0.1−0.2) with K2NiF4-type structure and perovskite-like La0.15Ni0.20O3−δ, were studied in the oxygen partial pressure range from 10−18-Pa to 50 kPa at 973-1223
Journal ArticleDOI
Oxygen Ionic and Electronic Transport in Apatite-Type Solid Electrolytes
Vladislav V. Kharton,Aliaksandr L. Shaula,Mikhail V. Patrakeev,João C. Waerenborgh,D.P. Rojas,N. P. Vyshatko,Ekaterina V. Tsipis,Aleksey A. Yaremchenko,Fernando M.B. Marques +8 more
TL;DR: In this article, the ion transference numbers of apatite-type La 9.83 Si 4.5 Al 1.5, where oxygen interstitials are close neighbors of Si-site cations, were determined by faradaic efficiency measurements at 973-1223 K in air.
Journal ArticleDOI
Pyrochlore to Fluorite Transition: The Y2(Ti1-xZrx)2O7 (0.0 ≤ x ≤ 1.0) System
Stefan T. Norberg,Stefan T. Norberg,Stephen Hull,Sten Eriksson,Istaq Ahmed,Francis Gachao Kinyanjui,Jordi Jacas Biendicho,Jordi Jacas Biendicho +7 more
TL;DR: In this paper, the structural properties of the system Y-2(Ti1-xZrx)(2)O-7 have been investigated using the neutron powder diffraction technique, including a detailed analysis of the total scattering using reverse Monte Carlo modeling to probe the short-range ion-ion correlations over sample range 0.0 <= x <= 1.0.
References
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Journal ArticleDOI
Electronic Transport in 8 Mole Percent Y 2 O 3 ‐ ZrO2
TL;DR: In this article, a gas-tight electrochemical cell was used to measure oxygen permeation on the oxygen ion conductor 8 mole percent (m/o) yttria-stabilized zirconia, as a function of T (800{sup 0}-1050{sup0}C) and {rho}O/sub 2/ (0.21-10/sup -17/ atm).
Journal ArticleDOI
Thermogravimetric and electrical study of non-stoichiometric titanium dioxide TiO2−x, between 800 and 1100°C
TL;DR: In this article, the authors used thermogravimetrie and electrical measurements to give accurate informations on the nature of the defects produced by reduction of TiO2 between 800 and 1100°C.
Journal ArticleDOI
Diffusion and point defects in TiO2−x
TL;DR: In this paper, the authors measured the self-diffusion of 44 Ti in rutile single crystals by serial-sectioning technique as a function of temperature (1000 −1500°C) and oxygen partial pressure (10 −14 − 1 atm).
Journal ArticleDOI
Electrical conductivity of nonstoichiometric rutile single crystals from 1000° to 1500°C
TL;DR: In this paper, a defect model involving quasi-free electrons and both triply and quadruply ionized titanium interstitials was proposed to rationalize the nonstoichiometric defect structure of rutile.
Journal ArticleDOI
Thermoelectric behavior of single crystalline ZrO2(+8mo Y2O3)
Ham-Ill Yoo,Jin-Ha Hwang +1 more
TL;DR: In this paper, the absolute thermoelectric power of a single crystalline Y0.148Zr0.852O1.926 + δ was measured as a function of temperature from 1073 to 1373 K and of ambient oxygen partial pressure of 10−4 to 1 bar.