B,N,S tri-doped reduced graphite oxide–cobalt oxide composite: a bifunctional electrocatalyst for enhanced oxygen reduction and oxygen evolution reactions

2018 ◽  
Vol 42 (15) ◽  
pp. 12908-12917 ◽  
Author(s):  
Sagar B. Ingavale ◽  
Indrajit M. Patil ◽  
Haridas B. Parse ◽  
Niranjan Ramgir ◽  
Bhalchandra Kakade ◽  
...  
Keyword(s):  
Oxygen Reduction ◽  
Cobalt Oxide ◽  
Oxygen Evolution ◽  
Graphite Oxide ◽  
Synergistic Effects ◽  
Bifunctional Electrocatalyst ◽  
Oxide Composite ◽  
Reduced Graphite Oxide ◽  
Orr Activity

Cobalt oxide with B,N,S tri-doped reduced graphite oxide exhibits synergistic effects to enhance ORR activity.

Photoactive Zn–air batteries using spinel-type cobalt oxide as a bifunctional photocatalyst at the air cathode

2019 ◽  
Vol 55 (42) ◽  
pp. 5855-5858 ◽  
Author(s):  
Chanikarn Tomon ◽  
Sangchai Sarawutanukul ◽  
Salatan Duangdangchote ◽  
Atiweena Krittayavathananon ◽  
Montree Sawangphruk
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Cobalt Oxide ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Reduction Reaction ◽  
Air Cathode ◽  
Spinel Type ◽  
Bifunctional Electrocatalyst ◽  
Zinc Air Batteries

Spinel-type cobalt oxide (Co3O4) was synthesized and used as a photoactive bifunctional electrocatalyst towards the oxygen evolution reaction (OER) and the oxygen reduction reaction (ORR) at the air cathode of zinc–air batteries (ZABs).

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.

Sign in / Sign up

Export Citation Format

Share Document