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.

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).

Oxygen-ion Conductivity of Re Tungstates Ln14W4O33 (Ln = Nd, Sm, Gd)

2021 ◽  
Author(s):  
Anna Shlyakhtina ◽  
Nikolay Lyskov ◽  
Sergei Cheryak ◽  
Igor Kolbanev ◽  
Anna Kasyanova ◽  
...  
Keyword(s):  
Ion Conductivity ◽  
Oxygen Ion Conductivity ◽  
Oxygen Ion

Doped Ceria Based Solid Oxide Fuel Cell Electrolytes and their Sintering Aspects: An Overview

2016 ◽  
Vol 835 ◽  
pp. 199-236 ◽  
Author(s):  
Pradyot Datta
Keyword(s):  
Power Generation ◽  
Fuel Cell ◽  
Solid Oxide Fuel Cell ◽  
Operating Temperature ◽  
Solid Oxide ◽  
Ion Conductivity ◽  
Doped Ceria ◽  
Oxide Fuel ◽  
Oxygen Ion Conductivity ◽  
Oxygen Ion

Depletion of fossil fuel at an alarming rate is a major concern of humankind. Consequently, researchers all over the world are putting a concerted effort for finding alternative and renewable energy. Solid oxide fuel cell (SOFC) is one such system. SOFCs are electrochemical devices that have several advantages over conventional power generation systems like high efficiency of power generation, low emission of green house gases and the fuel flexibility. The major research focus of recent times is to reduce the operating temperature of SOFC in the range of 500 to 700 °C so as to render it commercially viable. This reduction in temperature is largely dependent on finding an electrolyte material with adequate oxygen ion conductivity at the intended operating temperature. One much material is Gadolinia doped Ceria (CGO) that shows very good oxygen ion conductivity at the intended operation temperature. The aim of this overview is to highlight the contribution that materials chemistry has made to the development of CGO as an electrolyte.

Oxygen ion conductivity of hexagonal La2W1.25O6.75

1999 ◽  
Vol 38 (4) ◽  
pp. 300-304 ◽  
Author(s):  
A.V Kovalevsky ◽  
V.V Kharton ◽  
E.N Naumovich
Keyword(s):  
Ion Conductivity ◽  
Oxygen Ion Conductivity ◽  
Oxygen Ion

scholarly journals Anisotropic Proton and Oxygen Ion Conductivity in Epitaxial Ba2In2O5 Thin Films

2017 ◽  
Vol 121 (40) ◽  
pp. 21797-21805 ◽  
Author(s):  
Aline Fluri ◽  
Elisa Gilardi ◽  
Maths Karlsson ◽  
Vladimir Roddatis ◽  
Marco Bettinelli ◽  
...  
Keyword(s):  
Thin Films ◽  
Ion Conductivity ◽  
Oxygen Ion Conductivity ◽  
Oxygen Ion

Enhanced Oxygen Ion Conductivity in Composite Film Electrolytes with Aligned Nanowires

2018 ◽  
Vol 5 (13) ◽  
pp. 1800098 ◽  
Author(s):  
Mengfei Zhang ◽  
Tianjun Li ◽  
Zheng Li ◽  
Yan Xing ◽  
Xiaohui Zhao ◽  
...  
Keyword(s):  
Composite Film ◽  
Ion Conductivity ◽  
Oxygen Ion Conductivity ◽  
Oxygen Ion

Design Rules for High Oxygen-Ion Conductivity in Garnet-Type Oxides

2020 ◽  
Vol 32 (4) ◽  
pp. 1358-1370
Author(s):  
Joohwi Lee ◽  
Nobuko Ohba ◽  
Ryoji Asahi
Keyword(s):  
Ion Conductivity ◽  
High Oxygen ◽  
Design Rules ◽  
Oxygen Ion Conductivity ◽  
Oxygen Ion

Intrinsic Fast Oxygen Ionic Conductivity in the Gd2(ZrxTil−.)2O7, and Y2 (ZrxTil−x,)2O7, Pyrochlore Systems

1988 ◽  
Vol 135 ◽  
Author(s):  
P.K. Moon ◽  
H.L. Tuller
Keyword(s):  
Solid Solution ◽  
Ionic Conductivity ◽  
Oxygen Vacancy ◽  
Intrinsic Disorder ◽  
Structural Disorder ◽  
The Other ◽  
Oxygen Ion Conductivity ◽  
Oxygen Ion ◽  
O 24 ◽  
The Relationship

AbstractThe pyrochlore solid solution Gd2(Zrx Til−x)2O7, was found to be an attractive system for investigating the relationship between composition, structural disorder and ionic conductivity. Both cation and anion order parameters were found to decrease systematically with increasing substitution of Zr for Ti leading ultimately to intrinsic fast oxygen ion conductivity in the solid solution. The degree of intrinsic disorder was determined quantitatively from doping experiments and was found to be equal to l.0×lO39 exp(-O.24±0.03eV/kT)cm−6sfor x = 0.3 and substantially larger for higher values of x. Oxygen vacancy mobilities, on the other hand, were found to be relatively independent of x with values of μv, = 0.15exp(-0.78 ± 0.02 eV/kT)cm2V−1s−1. These, and more recent results, on Y2 (ZrxTil−x)2O7, are discussed in the context of the similarities between the pyrochlore and fluorite phases.

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