Atomistic simulations of ion migration in sodium bismuth titanate (NBT) materials: towards superior oxide-ion conductors

2018 ◽  
Vol 6 (19) ◽  
pp. 9116-9123 ◽  
Author(s):  
Haiwu Zhang ◽  
Amr. H. H. Ramadan ◽  
Roger A. De Souza
Keyword(s):  
Bismuth Titanate ◽  
Atomistic Simulations ◽  
Sodium Bismuth Titanate ◽  
Ion Migration ◽  
Ion Conductivities ◽  
Oxide Ion Conductors ◽  
Oxide Ion ◽  
Ion Conductors

Fabricating (111)-ordered NBT and avoid any A-site vacancies will yield even higher oxide-ion conductivities.

Interstitial oxide ion migration in scheelite-type electrolytes: a combined neutron diffraction and computational study

2015 ◽  
Vol 3 (44) ◽  
pp. 22258-22265 ◽  
Author(s):  
Chiara Ferrara ◽  
Alessandro Mancini ◽  
Clemens Ritter ◽  
Lorenzo Malavasi ◽  
Cristina Tealdi
Keyword(s):  
Neutron Diffraction ◽  
Computational Study ◽  
Ion Migration ◽  
Oxide Ion Conductors ◽  
Oxide Ion ◽  
Ion Conductors

W-doped LnNbO4+d compounds (Ln = La, Nd) have been recently proposed as novel interstitial-based oxide ion conductors.

scholarly journals Ga-doped Ca12Al14O33 mayenite oxide ion conductors: synthesis, defects, and electrical properties

RSC Advances ◽  
2019 ◽  
Vol 9 (7) ◽  
pp. 3809-3815 ◽  
Author(s):  
Huaibo Yi ◽  
Yun Lv ◽  
Yanhui Wang ◽  
Xue Fang ◽  
Victoria Mattick ◽  
...  
Keyword(s):  
Electrical Properties ◽  
Bulk Conductivity ◽  
Oxide Ion Conductors ◽  
Ga Doping ◽  
Oxide Ion ◽  
Ion Conductors

The bulk conductivity of Ca12Al14O33 can be apparently enhanced by Ga-doping on the Al sites.

scholarly journals Nanoscale tracking of oxygen diffusion pathways in oxide ion conductors

2021 ◽  
Vol 27 (S1) ◽  
pp. 180-181
Author(s):  
David Diercks ◽  
Federico Baiutti ◽  
Francesco Chiabrera ◽  
Alex Morata ◽  
Albert Tarancon
Keyword(s):  
Oxygen Diffusion ◽  
Oxide Ion Conductors ◽  
Oxide Ion ◽  
Ion Conductors

The dependence of polymorphism on the ionic radius of Ln3+ (LnLaEr, Y) in the oxide ion conductors Bi0.775Ln0.225O1.5

1993 ◽  
Vol 67 (1-2) ◽  
pp. 25-28 ◽  
Author(s):  
A WATANABE ◽  
M DRACHE ◽  
J WIGNACOURT ◽  
P CONFLANT ◽  
J BOIVIN
Keyword(s):  
Ionic Radius ◽  
Oxide Ion Conductors ◽  
Oxide Ion ◽  
Ion Conductors

Internal Friction Study of the Rare Earth Ion Substituted Fast Oxide-Ion Conductors (La1-ΧreΧ)2Mo2O9 (Re=Nd, Gd)

2012 ◽  
Vol 184 ◽  
pp. 110-115
Author(s):  
X.P. Wang ◽  
J. Hu ◽  
Zhong Zhuang ◽  
Tao Zhang ◽  
Qian Feng Fang
Keyword(s):  
Phase Transition ◽  
Rare Earth ◽  
Internal Friction ◽  
Diffusion Processes ◽  
Rare Earth Ion ◽  
Disorder Transition ◽  
Oxide Ion Conductors ◽  
Oxide Ion ◽  
The Rare Earth ◽  
Ion Conductors

The relaxation and phase transition behaviors of rare-earth ion substituted fast oxide-ion conductors (La1-xRex)2Mo2O9 (Re=Nd, Gd) were investigated by internal friction (IF) measurement in the temperature range 300 K - 950 K. Three different IF peaks (labeled as PL, PH, and PG, respectively) were observed in the rare-earth ion doped La2Mo2O9 samples. Peak PL corresponds to short diffusion processes of oxygen ions among different oxygen vacancy sites. Peak PH is associated with the static/dynamic disorder transition in oxygen ion distribution. Peak PG is a newly discovered peak embodying phase transition-like characteristics and is suggested to be related to order-disorder transition associated with the rearrangement of La/ Re sub-lattice.

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