Improvement of Oxygen Surface Exchange Kinetics for CGO with Surface Treatment

2013 ◽  
Vol 161 (1) ◽  
pp. F99-F104 ◽  
Author(s):  
J. Druce ◽  
J. A. Kilner
Keyword(s):  
Surface Treatment ◽  
Surface Exchange ◽  
Exchange Kinetics ◽  
Oxygen Surface Exchange ◽  
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.

scholarly journals Effect of La0.6Sr0.4Co0.2Fe0.8O3-δ microstructure on oxygen surface exchange kinetics

2016 ◽  
Vol 288 ◽  
pp. 6-9 ◽  
Author(s):  
Katherine Develos-Bagarinao ◽  
Haruo Kishimoto ◽  
Jeffrey De Vero ◽  
Katsuhiko Yamaji ◽  
Teruhisa Horita
Keyword(s):  
Surface Exchange ◽  
Exchange Kinetics ◽  
Oxygen Surface Exchange ◽  
Oxygen Surface

scholarly journals Emergence of Rapid Oxygen Surface Exchange Kinetics during in Situ Crystallization of Mixed Conducting Thin Film Oxides

2019 ◽  
Vol 11 (9) ◽  
pp. 9102-9116 ◽  
Author(s):  
Ting Chen ◽  
George F. Harrington ◽  
Juveria Masood ◽  
Kazunari Sasaki ◽  
Nicola H. Perry
Keyword(s):  
Thin Film ◽  
Surface Exchange ◽  
Thin Film Oxides ◽  
In Situ Crystallization ◽  
Exchange Kinetics ◽  
Oxygen Surface Exchange ◽  
Oxygen Surface

Oxygen surface exchange kinetics of Ba0.5Sr0.5Co0.8Fe0.2O3−δ

2020 ◽  
Vol 22 (18) ◽  
pp. 10158-10169
Author(s):  
V. A. Eremin ◽  
M. V. Ananyev ◽  
H. J. M. Bouwmeester ◽  
E. Kh. Kurumchin ◽  
Ch.-Y. Yoo
Keyword(s):  
Gas Phase ◽  
Oxygen Exchange ◽  
Oxide Surface ◽  
Surface Exchange ◽  
Exchange Kinetics ◽  
Kinetics Of ◽  
Oxygen Surface Exchange ◽  
Oxygen Surface

The mechanism of oxygen exchange between the gas phase and Ba0.5Sr0.5Co0.8Fe0.2O3−δ oxide was evaluated by considering the inhomogeneity of the oxide surface.

scholarly journals Strontium influence on the oxygen electrocatalysis of La2−xSrxNiO4±δ (0.0 ≤ xSr ≤ 1.0) thin films

2014 ◽  
Vol 2 (18) ◽  
pp. 6480-6487 ◽  
Author(s):  
Dongkyu Lee ◽  
Yueh-Lin Lee ◽  
Alexis Grimaud ◽  
Wesley T. Hong ◽  
Michael D. Biegalski ◽  
...  
Keyword(s):  
Thin Films ◽  
Surface Exchange ◽  
Exchange Kinetics ◽  
Oxygen Surface Exchange ◽  
Oxygen Surface

Strong Sr dependence of the oxygen surface exchange kinetics for the La2−xSrxNiO4±δ (LSNO) thin films.

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