Study of the electrochemical reduction of oxygen on glassy carbon in an alkaline medium

1973 ◽  
Vol 38 (4) ◽  
pp. 985-993 ◽  
Author(s):  
M. Březina ◽  
A. Hofmanová
Keyword(s):  
Electrochemical Reduction ◽  
Alkaline Medium ◽  
Glassy Carbon ◽  
Electrochemical Reduction Of Oxygen

scholarly journals Cobalt Nanoparticle-Embedded Nitrogen-Doped Carbon Catalyst Derived from a Solid-State Metal-Organic Framework Complex for OER and HER Electrocatalysis

Energies ◽  
2021 ◽  
Vol 14 (5) ◽  
pp. 1320
Author(s):  
Shaik Gouse Peera ◽  
Ravindranadh Koutavarapu ◽  
Chao Liu ◽  
Gaddam Rajeshkhanna ◽  
Arunchander Asokan ◽  
...  
Keyword(s):  
Solid State ◽  
Alkaline Medium ◽  
Glassy Carbon ◽  
Metal Organic Framework ◽  
Electronic Conductivity ◽  
Organic Ligand ◽  
Synthesis Process ◽  
Ni Foam ◽  
Shell Nanoparticles ◽  
Energy Devices

Electrochemical water splitting is considered a promising way of producing hydrogen and oxygen for various electrochemical energy devices. An efficient single, bi-functional electrocatalyst that can perform hydrogen evolution reactions (HERs) and oxygen evolution reactions (OERs) is highly essential. In this work, Co@NC core-shell nanoparticles were synthesized via a simple, eco-friendly, solid-state synthesis process, using cobalt nitrate and with pyrazole as the N and C source. The morphological analysis of the resulting Co@NC nanoparticles was performed with a scanning and transmission electron microscope, which showed Co nanoparticles as the core and the pyrolysis of pyrazole organic ligand N-doped carbon derived shell structure. The unique Co@NC nanostructures had excellent redox sites for electrocatalysis, wherein the N-doped carbon shell exhibited superior electronic conductivity in the Co@NC catalyst. The resulting Co@NC nanocatalyst showed considerable HER and OER activity in an alkaline medium. The Co@NC catalyst exhibited HERs overpotentials of 243 and 170 mV at 10 mA∙cm−2 on glassy carbon and Ni foam electrodes, respectively, whereas OERs were exhibited overpotentials of 450 and 452 mV at a current density of 10 and 50 mA∙cm−2 on glassy carbon electrode and Ni foam, respectively. Moreover, the Co@NC catalyst also showed admirable durability for OERs in an alkaline medium.

Electrochemical reduction of oxygen catalyzed by Pseudomonas aeruginosa

2010 ◽  
Vol 55 (17) ◽  
pp. 4902-4908 ◽  
Author(s):  
Amandine Cournet ◽  
Mathieu Bergé ◽  
Christine Roques ◽  
Alain Bergel ◽  
Marie-Line Délia
Keyword(s):  
Pseudomonas Aeruginosa ◽  
Electrochemical Reduction ◽  
Electrochemical Reduction Of Oxygen
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