scholarly journals Improving the Activity for Oxygen Evolution Reaction by Tailoring Oxygen Defects in Double Perovskite Oxides

2019 ◽  
Vol 29 (34) ◽  
pp. 1901783 ◽  
Author(s):  
Yunmin Zhu ◽  
Lei Zhang ◽  
Bote Zhao ◽  
Huijun Chen ◽  
Xi Liu ◽  
...  
Keyword(s):  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Double Perovskite ◽  
Perovskite Oxides ◽  
Oxygen Defects

Oxygen defect engineering in double perovskite oxides for effective water oxidation

2020 ◽  
Vol 8 (21) ◽  
pp. 10957-10965 ◽  
Author(s):  
Yunmin Zhu ◽  
Xiao Zhong ◽  
Shiguang Jin ◽  
Haijun Chen ◽  
Zuyun He ◽  
...  
Keyword(s):  
Plasma Treatment ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Water Oxidation ◽  
Oxygen Vacancies ◽  
Double Perovskite ◽  
Perovskite Oxides ◽  
Oxygen Defect ◽  
Defect Engineering ◽  
Effective Water

Generating oxygen vacancies in PrBa0.5Sr0.5Co1.5Fe0.5O5+δvia plasma treatment for strongly boosted oxygen evolution reaction activity.

MOF-derived M-OOH with rich oxygen defects by in-situ electro-oxidation reconstitution for highly efficient oxygen evolution reaction

2021 ◽  
Author(s):  
Zhikai Shi ◽  
Zebin Yu ◽  
Ronghua Jiang ◽  
Jun Huang ◽  
Yanping Hou ◽  
...  
Keyword(s):  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Energy Production ◽  
Low Cost ◽  
Highly Efficient ◽  
Oxygen Defects ◽  
Electro Oxidation

The oxygen evolution reaction (OER) is an important half-reaction in the field of energy production. However, how effectively, simply, and greenly to prepare low-cost OER electrocatalysts remains a problem. Herein,...

Ordering and Phase Control in Epitaxial Double-Perovskite Catalysts for the Oxygen Evolution Reaction

ACS Catalysis ◽  
2017 ◽  
Vol 7 (10) ◽  
pp. 7029-7037 ◽  
Author(s):  
Felix Gunkel ◽  
Lei Jin ◽  
David N. Mueller ◽  
Clemens Hausner ◽  
Daniel S. Bick ◽  
...  
Keyword(s):  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Double Perovskite ◽  
Phase Control ◽  
Perovskite Catalysts

Smart Control of Composition for Double Perovskite Electrocatalysts toward Enhanced Oxygen Evolution Reaction

ChemSusChem ◽  
2019 ◽  
Vol 12 (23) ◽  
pp. 5111-5116 ◽  
Author(s):  
Hainan Sun ◽  
Xiaomin Xu ◽  
Gao Chen ◽  
Yupeng Zhou ◽  
Hong‐Ji Lin ◽  
...  
Keyword(s):  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Double Perovskite ◽  
Smart Control

scholarly journals Fe-Doping in Double Perovskite PrBaCo2(1-x)Fe2xO6-δ: Insights into Structural and Electronic Effects to Enhance Oxygen Evolution Catalyst Stability

Catalysts ◽  
2019 ◽  
Vol 9 (3) ◽  
pp. 263 ◽  
Author(s):  
Bae-Jung Kim ◽  
Emiliana Fabbri ◽  
Ivano Castelli ◽  
Mario Borlaf ◽  
Thomas Graule ◽  
...  
Keyword(s):  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Double Perovskite ◽  
Alkaline Media ◽  
Catalyst Stability ◽  
Electronic Effects ◽  
Single Transition ◽  
Charge Stability ◽  
X Ray Absorption

Perovskite oxides have been gaining attention for its capability to be designed as an ideal electrocatalyst for oxygen evolution reaction (OER). Among promising candidates, the layered double perovskite—PrBaCo2O6-δ (PBC)—has been identified as the most active perovskite electrocatalyst for OER in alkaline media. For a single transition metal oxide catalyst, the addition of Fe enhances its electrocatalytic performance towards OER. To understand the role of Fe, herein, Fe is incorporated in PBC in different ratios, which yielded PrBaCo2(1-x)Fe2xCo6-δ (x = 0, 0.2 and 0.5). Fe-doped PBCF’s demonstrate enhanced OER activities and stabilities. Operando X-ray absorption spectroscopy (XAS) revealed that Co is more stable in a lower oxidation state upon Fe incorporation by establishing charge stability. Hence, the degradation of Co is inhibited such that the perovskite structure is prolonged under the OER conditions, which allows it to serve as a platform for the oxy(hydroxide) layer formation. Overall, our findings underline synergetic effects of incorporating Fe into Co-based layered double perovskite in achieving a higher activity and stability during oxygen evolution reaction.

Design Insights for Tuning the Electrocatalytic Activity of Perovskite Oxides for the Oxygen Evolution Reaction

2015 ◽  
Vol 119 (15) ◽  
pp. 8004-8013 ◽  
Author(s):  
S. Malkhandi ◽  
P. Trinh ◽  
Aswin K. Manohar ◽  
A. Manivannan ◽  
M. Balasubramanian ◽  
...  
Keyword(s):  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Electrocatalytic Activity ◽  
Perovskite Oxides
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