A novel pulse isotopic exchange technique for rapid determination of the oxygen surface exchange rate of oxide ion conductors

2009 ◽  
Vol 11 (42) ◽  
pp. 9640 ◽  
Author(s):  
Henny J. M. Bouwmeester ◽  
Chunlin Song ◽  
Jianjun Zhu ◽  
Jianxin Yi ◽  
Martin van Sint Annaland ◽  
...  
Keyword(s):  
Exchange Rate ◽  
Isotopic Exchange ◽  
Rapid Determination ◽  
Surface Exchange ◽  
Oxygen Surface Exchange ◽  
Oxide Ion Conductors ◽  
Oxide Ion ◽  
Oxygen Surface ◽  
Exchange Technique

Oxygen Surface Exchange at Grain Boundaries of Oxide Ion Conductors

2011 ◽  
Vol 22 (5) ◽  
pp. 965-971 ◽  
Author(s):  
Wonyoung Lee ◽  
Hee Joon Jung ◽  
Min Hwan Lee ◽  
Young-Beom Kim ◽  
Joong Sun Park ◽  
...  
Keyword(s):  
Grain Boundaries ◽  
Surface Exchange ◽  
Oxygen Surface Exchange ◽  
Oxide Ion Conductors ◽  
Oxide Ion ◽  
Oxygen Surface ◽  
Ion Conductors

Oxygen Surface Exchange and Diffusion in the New Perovskite Oxide Ion Conductor LaGaO3

1997 ◽  
Vol 119 (11) ◽  
pp. 2747-2748 ◽  
Author(s):  
Tatsumi Ishihara ◽  
John A. Kilner ◽  
Miho Honda ◽  
Yusaku Takita
Keyword(s):  
Perovskite Oxide ◽  
Surface Exchange ◽  
Ion Conductor ◽  
Oxide Ion Conductor ◽  
And Diffusion ◽  
Oxygen Surface Exchange ◽  
Oxide Ion ◽  
Oxygen Surface

scholarly journals Influence of Heterointerfaces on the Kinetics of Oxygen Surface Exchange on Epitaxial La1.85Sr0.15CuO4 Thin Films

2021 ◽  
Vol 11 (9) ◽  
pp. 3778
Author(s):  
Gene Yang ◽  
So-Yeun Kim ◽  
Changhee Sohn ◽  
Jong K. Keum ◽  
Dongkyu Lee
Keyword(s):  
Thin Films ◽  
Oxygen Vacancies ◽  
Elevated Temperatures ◽  
Surface Exchange ◽  
Electrical Conductivity Relaxation ◽  
Exchange Kinetics ◽  
Relaxation Curves ◽  
Kinetics Of ◽  
Oxygen Surface Exchange ◽  
Oxygen Surface

Considerable attention has been directed to understanding the influence of heterointerfaces between Ruddlesden–Popper (RP) phases and ABO3 perovskites on the kinetics of oxygen electrocatalysis at elevated temperatures. Here, we report the effect of heterointerfaces on the oxygen surface exchange kinetics by employing heteroepitaxial oxide thin films formed by decorating LaNiO3 (LNO) on La1.85Sr0.15CuO4 (LSCO) thin films. Regardless of LNO decoration, tensile in-plane strain on LSCO films does not change. The oxygen surface exchange coefficients (kchem) of LSCO films extracted from electrical conductivity relaxation curves significantly increase with partial decorations of LNO, whereas full LNO coverage leads to the reduction in the kchem of LSCO films. The activation energy for oxygen exchange in LSCO films significantly decreases with partial LNO decorations in contrast with the full coverage of LNO. Optical spectroscopy reveals the increased oxygen vacancies in the partially covered LSCO films relative to the undecorated LSCO film. We attribute the enhanced oxygen surface exchange kinetics of LSCO to the increased oxygen vacancies by creating the heterointerface between LSCO and LNO.

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