Ti/Pt−Pd‐Based Nanocomposite: Effects of Metal Oxides on the Oxygen Reduction Reaction

2020 ◽  
Vol 7 (7) ◽  
pp. 1610-1618 ◽  
Author(s):  
Guilherme V. Fortunato ◽  
Eduardo S. F. Cardoso ◽  
Bibiana K. Martini ◽  
Gilberto Maia
Keyword(s):  
Oxygen Reduction Reaction ◽  
Metal Oxides ◽  
Oxygen Reduction ◽  
Reduction Reaction

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

Materials ◽  
2020 ◽  
Vol 13 (16) ◽  
pp. 3531 ◽  
Author(s):  
Abdalla Abdelwahab ◽  
Francisco Carrasco-Marín ◽  
Agustín F. Pérez-Cadenas
Keyword(s):  
Oxygen Reduction Reaction ◽  
Metal Oxides ◽  
Oxygen Reduction ◽  
Reduction Reaction ◽  
Basic Medium ◽  
Equivalent Series Resistance ◽  
Mesopore Volume ◽  
Carbon Xerogel ◽  
Carbon Xerogels ◽  
High Electronic Conductivity

A series of carbon xerogels doped with cobalt, nickel, and iron have been prepared through the sol–gel method. The doped carbon xerogels were further functionalized with binary and ternary transition metal oxides containing Co, Ni, and Zn oxides by the hydrothermal method. A development in the mesopore volume is achieved for functionalized carbon xerogel doped with iron. However, in the functionalization of carbon xerogel with ternary metal oxides, a reduction in pore diameter and mesopore volume is found. In addition, all functionalized metal oxides/carbon are in the form of 3D nanobundles with different lengths and widths. The prepared samples have been tested as electrocatalysts for oxygen reduction reaction (ORR) in basic medium. All composites showed excellent oxygen reduction reaction activity; the low equivalent series resistance of the Zn–Ni–Co/Co–CX composite was especially remarkable, indicating high electronic conductivity. It has been established that the role of Zn in this type of metal oxides nanobundles-based ORR catalyst is not only positive, but its effect could be enhanced by the presence of Ni.

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 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 Decoupling the roles of carbon and metal oxides on the electrocatalytic reduction of oxygen on La1−xSrxCoO3−δ perovskite composite electrodes

2019 ◽  
Vol 21 (6) ◽  
pp. 3327-3338 ◽  
Author(s):  
J. Tyler Mefford ◽  
Aleksandr A. Kurilovich ◽  
Jennette Saunders ◽  
William G. Hardin ◽  
Artem M. Abakumov ◽  
...  
Keyword(s):  
Oxygen Reduction Reaction ◽  
Metal Oxides ◽  
Oxygen Reduction ◽  
Perovskite Oxides ◽  
Reduction Reaction ◽  
Composite Electrodes ◽  
Electrocatalytic Reduction ◽  
Microkinetic Modeling ◽  
Carbon Additives

Experiment and microkinetic modeling decouple the synergistic roles of La1−xSrxCoO3−δ perovskite oxides and carbon additives during the 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...

General Formation of Complex Tubular Nanostructures of Metal Oxides for the Oxygen Reduction Reaction and Lithium-Ion Batteries

2013 ◽  
Vol 125 (33) ◽  
pp. 8805-8809 ◽  
Author(s):  
Genqiang Zhang ◽  
Bao Yu Xia ◽  
Chong Xiao ◽  
Le Yu ◽  
Xin Wang ◽  
...  
Keyword(s):  
Oxygen Reduction Reaction ◽  
Metal Oxides ◽  
Lithium Ion Batteries ◽  
Oxygen Reduction ◽  
Lithium Ion ◽  
Reduction Reaction
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