Anionic defect engineering of transition metal oxides for oxygen reduction and evolution reactions

2019 ◽  
Vol 7 (11) ◽  
pp. 5875-5897 ◽  
Author(s):  
Yunmin Zhu ◽  
Xi Liu ◽  
Shiguang Jin ◽  
Huijun Chen ◽  
Wonyoung Lee ◽  
...  
Keyword(s):  
Transition Metal ◽  
Metal Oxides ◽  
Oxygen Reduction ◽  
Transition Metal Oxides ◽  
Defect Engineering ◽  
Oxygen Reaction

Techniques for anionic defect engineering in transition metal oxides and mechanisms of how anion defects affect their oxygen reaction activities.

Challenges in the understanding oxygen reduction electrocatalysis on transition metal oxides

2019 ◽  
Vol 14 ◽  
pp. 23-31 ◽  
Author(s):  
Antoine Bonnefont ◽  
Anna S. Ryabova ◽  
Tiphaine Schott ◽  
Gwénaëlle Kéranguéven ◽  
Sergey Ya. Istomin ◽  
...  
Keyword(s):  
Transition Metal ◽  
Metal Oxides ◽  
Oxygen Reduction ◽  
Transition Metal Oxides

scholarly journals Binary and Ternary 3D nanobundles Transition Metal Oxides Functionalized Carbon Xerogels as Electrocatalysts toward Oxygen Reduction Reaction

2020 ◽  
Author(s):  
Abdalla Abdelwahab ◽  
Francisco Carrasco-Marín ◽  
Agustín F. Pérez-Cadenas
Keyword(s):  
Transition Metal ◽  
Oxygen Reduction Reaction ◽  
Metal Oxides ◽  
Oxygen Reduction ◽  
Transition Metal Oxides ◽  
Reduction Reaction ◽  
Excellent Performance ◽  
Carbon Xerogel ◽  
Carbon Xerogels

This work describes preparation of novel binary and ternary transition metal oxides functionalized carbon xerogel. The characterization data reveals that the functionalized metal oxides are in the form of nanobundles with different lengths and widths. these prepared electrocatalysts show excellent performance as electrocatalysts for oxygen reduction reaction.

scholarly journals Thickness Dependent OER Electrocatalysis of Epitaxial LaFeO3 Thin Films

2022 ◽  
Author(s):  
Andricus Burton ◽  
Rajendra Paudel ◽  
Bethany E Matthews ◽  
Michel Sassi ◽  
Steven Richard Spurgeon ◽  
...  
Keyword(s):  
Thin Films ◽  
Transition Metal ◽  
Metal Oxides ◽  
Oxygen Reduction ◽  
Iron Oxides ◽  
Oxygen Evolution ◽  
Transition Metal Oxides ◽  
Reduction Reactions ◽  
Oxygen Reduction Reactions ◽  
Area Of Interest

Transition metal oxides have long been an area of interest for water electrocatalysis through the oxygen evolution and oxygen reduction reactions. Iron oxides, such as LaFeO3, are particularly promising due...

scholarly journals Binary and Ternary 3D nanobundles Transition Metal Oxides Functionalized Carbon Xerogels as Electrocatalysts toward Oxygen Reduction Reaction

2020 ◽  
Author(s):  
Abdalla Abdelwahab ◽  
Francisco Carrasco-Marín ◽  
Agustín F. Pérez-Cadenas
Keyword(s):  
Transition Metal ◽  
Oxygen Reduction Reaction ◽  
Metal Oxides ◽  
Oxygen Reduction ◽  
Transition Metal Oxides ◽  
Reduction Reaction ◽  
Excellent Performance ◽  
Carbon Xerogel ◽  
Carbon Xerogels

This work describes preparation of novel binary and ternary transition metal oxides functionalized carbon xerogel. The characterization data reveals that the functionalized metal oxides are in the form of nanobundles with different lengths and widths. these prepared electrocatalysts show excellent performance as electrocatalysts for oxygen reduction reaction.

Ti3C2 supported transition metal oxides and silver as catalysts toward efficient electricity generation in microbial fuel cell

2021 ◽  
Author(s):  
Xinghong Wang ◽  
Xiaobo Gong ◽  
Liu Chen ◽  
Siyu Li ◽  
Jinlin Xie ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Transition Metal ◽  
Oxygen Reduction Reaction ◽  
Metal Oxides ◽  
Oxygen Reduction ◽  
Microbial Fuel Cell ◽  
Transition Metal Oxides ◽  
Electricity Generation ◽  
Reduction Reaction ◽  
Air Cathode

Oxygen reduction reaction (ORR) has been regarded as a bottleneck in air-cathode microbial fuel cell (MFC). Herein, transition metal oxides and silver were used to combine with conductive and hydrophilic...

Transition metal oxide-based oxygen reduction reaction electrocatalysts for energy conversion systems with aqueous electrolytes

2018 ◽  
Vol 6 (23) ◽  
pp. 10595-10626 ◽  
Author(s):  
Yejian Xue ◽  
Shanshan Sun ◽  
Qin Wang ◽  
Zhenghao Dong ◽  
Zhaoping Liu
Keyword(s):  
Transition Metal ◽  
Oxygen Reduction Reaction ◽  
Metal Oxides ◽  
Oxygen Reduction ◽  
Electric Vehicles ◽  
Transition Metal Oxides ◽  
Reduction Reaction ◽  
Aqueous Electrolytes ◽  
Power Sources ◽  
Energy Conversion Systems

This review concerning transition-metal-oxides-based electrocatalysts for the oxygen reduction reaction in metal–air batteries will encourage the enthusiasm of researchers to develop efficient catalysts for power sources used in electric vehicles.

Changes induced by transition metal oxides in Pt nanoparticles unveil the effects of electronic properties on oxygen reduction activity

2019 ◽  
Vol 7 (5) ◽  
pp. 2075-2086 ◽  
Author(s):  
Felipe B. Ometto ◽  
Emilia A. Carbonio ◽  
Érico Teixeira-Neto ◽  
Hebe M. Villullas
Keyword(s):  
Transition Metal ◽  
Metal Oxides ◽  
Electronic Properties ◽  
Oxygen Reduction ◽  
Transition Metal Oxides ◽  
Pt Nanoparticles ◽  
Electronic Effects ◽  
Reduction Activity ◽  
Metal Support ◽  
Metal Support Interactions

Relevance of electronic effects in oxygen reduction on Pt nanoparticles is unveiled taking advantage of metal–support interactions.

HREM Study of electron-induced surface radiation damage in ReO3

1991 ◽  
Vol 49 ◽  
pp. 636-637
Author(s):  
R. Ai ◽  
H.-J. Fan ◽  
L. D. Marks
Keyword(s):  
Transition Metal ◽  
Metal Ions ◽  
Metal Oxides ◽  
Electron Irradiation ◽  
Transition Metal Oxides ◽  
Carbon Film ◽  
Transition Metal Ions ◽  
Surface Radiation ◽  
Valence Transition ◽  
Electron Microscopes

It has been known for a long time that electron irradiation induces damage in maximal valence transition metal oxides such as TiO2, V2O5, and WO3, of which transition metal ions have an empty d-shell. This type of damage is excited by electronic transition and can be explained by the Knoteck-Feibelman mechanism (K-F mechanism). Although the K-F mechanism predicts that no damage should occur in transition metal oxides of which the transition metal ions have a partially filled d-shell, namely submaximal valence transition metal oxides, our recent study on ReO3 shows that submaximal valence transition metal oxides undergo damage during electron irradiation.ReO3 has a nearly cubic structure and contains a single unit in its cell: a = 3.73 Å, and α = 89°34'. TEM specimens were prepared by depositing dry powders onto a holey carbon film supported on a copper grid. Specimens were examined in Hitachi H-9000 and UHV H-9000 electron microscopes both operated at 300 keV accelerating voltage. The electron beam flux was maintained at about 10 A/cm2 during the observation.

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