scholarly journals A novel Sm0.5Sr0.5Co1-xFexO3-δ/acetylene black composite as bifunctional electrocatalyst for oxygen reduction/evolution reactions

2021 ◽  
pp. ArticleID:210722
Author(s):  
Liquan Fan ◽  
Keyword(s):  
Oxygen Reduction ◽  
Acetylene Black ◽  
Bifunctional Electrocatalyst

Mn-Co oxide/PEDOT as a bifunctional electrocatalyst for oxygen evolution/reduction reactions

2015 ◽  
Vol 1777 ◽  
pp. 1-6 ◽  
Author(s):  
Elaheh Davari ◽  
Douglas G. Ivey
Keyword(s):  
Oxygen Reduction ◽  
Oxygen Evolution ◽  
Linear Sweep Voltammetry ◽  
Microstructural Characterization ◽  
Rotating Disk ◽  
Reduction Reaction ◽  
Rotating Disk Electrode ◽  
Bifunctional Electrocatalyst ◽  
Bifunctional Electrocatalysts ◽  
Anodic Electrodeposition

ABSTRACTBifunctional electrocatalysts, which facilitate the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER), are vital components in advanced metal-air batteries. Results are presented for carbon-free, nanocrystalline, rod-like, Mn-Co oxide/PEDOT bifunctional electrocatalysts, prepared by template-free sequential anodic electrodeposition. Electrochemical characterization of synthesized electrocatalysts, with and without a conducting polymer (PEDOT) coating, was performed using cyclic voltammetry (CV) and linear sweep voltammetry (LSV). In addition, microstructural characterization was conducted using SEM, TEM, STEM and XPS. Mn-Co oxide/PEDOT showed improved ORR/OER performance relative to Mn-Co oxide and PEDOT. On the basis of rotating disk electrode (RDE) experiments, Mn-Co oxide/PEDOT displayed the desired 4-electron transfer oxygen reduction pathway. Comparable ORR activity and superior OER activity relative to commercial Pt/C were observed.

scholarly journals Thermally reduced mesoporous manganese MOF @reduced graphene oxide nanocomposite as bifunctional electrocatalyst for oxygen reduction and evolution

RSC Advances ◽  
2020 ◽  
Vol 10 (46) ◽  
pp. 27728-27742 ◽  
Author(s):  
Abdul Wahab ◽  
Naseem Iqbal ◽  
Tayyaba Noor ◽  
Sheeraz Ashraf ◽  
Muhammad Arslan Raza ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Renewable Energy ◽  
Fuel Cells ◽  
Oxygen Reduction ◽  
Reduced Graphene Oxide ◽  
Crucial Role ◽  
Bifunctional Electrocatalyst ◽  
Renewable Energy Technologies ◽  
Energy Technologies ◽  
Reduced Graphene

Oxygen electrocatalysis plays a crucial role in harnessing energy from modern renewable energy technologies like fuel cells and metal–air batteries.

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