Fe/Co/Ni mixed oxide nanoparticles supported on oxidized multi-walled carbon nanotubes as electrocatalysts for the oxygen reduction and the oxygen evolution reactions in alkaline media

2020 ◽  
Vol 357 ◽  
pp. 259-268 ◽  
Author(s):  
Mariya A. Kazakova ◽  
Dulce M. Morales ◽  
Corina Andronescu ◽  
Karina Elumeeva ◽  
Alexander G. Selyutin ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Oxygen Reduction ◽  
Oxygen Evolution ◽  
Mixed Oxide ◽  
Alkaline Media ◽  
Oxide Nanoparticles ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes

Enhanced electrocatalytic activity of nitrogen-doped multi-walled carbon nanotubes towards the oxygen reduction reaction in alkaline media

RSC Advances ◽  
2015 ◽  
Vol 5 (73) ◽  
pp. 59495-59505 ◽  
Author(s):  
Merilin Vikkisk ◽  
Ivar Kruusenberg ◽  
Sander Ratso ◽  
Urmas Joost ◽  
Eugene Shulga ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Reduction Reaction ◽  
Alkaline Media ◽  
Nitrogen Doped ◽  
Highly Active ◽  
Multi Walled Carbon Nanotubes ◽  
Nitrogen Doped Carbon ◽  
Walled Carbon Nanotubes

Nitrogen-doped carbon nanotube materials derived from dicyandiamide and cyanamide are highly active electrocatalysts for oxygen reduction reaction in alkaline media.

scholarly journals The sum is more than its parts: stability of MnFe oxide nanoparticles supported on oxygen-functionalized multi-walled carbon nanotubes at alternating oxygen reduction reaction and oxygen evolution reaction conditions

2020 ◽  
Vol 24 (11-12) ◽  
pp. 2901-2906
Author(s):  
Dulce M. Morales ◽  
Mariya A. Kazakova ◽  
Maximilian Purcel ◽  
Justus Masa ◽  
Wolfgang Schuhmann
Keyword(s):  
Carbon Nanotubes ◽  
Oxygen Reduction ◽  
Oxygen Evolution ◽  
Active Sites ◽  
Reduction Reaction ◽  
Operating Conditions ◽  
Active Components ◽  
Successful Design ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes

Abstract Successful design of reversible oxygen electrocatalysts does not only require to consider their activity towards the oxygen reduction (ORR) and the oxygen evolution reactions (OER), but also their electrochemical stability at alternating ORR and OER operating conditions, which is important for potential applications in reversible electrolyzers/fuel cells or metal/air batteries. We show that the combination of catalyst materials containing stable ORR active sites with those containing stable OER active sites may result in a stable ORR/OER catalyst if each of the active components can satisfy the current demand of their respective reaction. We compare the ORR/OER performances of oxides of Mn (stable ORR active sites), Fe (stable OER active sites), and bimetallic Mn0.5Fe0.5 (reversible ORR/OER catalyst) supported on oxidized multi-walled carbon nanotubes. Despite the instability of Mn and Fe oxide for the OER and the ORR, respectively, Mn0.5Fe0.5 exhibits high stability for both reactions.

scholarly journals Trimetallic Mn‐Fe‐Ni Oxide Nanoparticles Supported on Multi‐Walled Carbon Nanotubes as High‐Performance Bifunctional ORR/OER Electrocatalyst in Alkaline Media

2019 ◽  
Vol 30 (6) ◽  
pp. 1905992 ◽  
Author(s):  
Dulce M. Morales ◽  
Mariya A. Kazakova ◽  
Stefan Dieckhöfer ◽  
Alexander G. Selyutin ◽  
Georgiy V. Golubtsov ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
High Performance ◽  
Alkaline Media ◽  
Oxide Nanoparticles ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes ◽  
Ni Oxide
Sign in / Sign up

Export Citation Format

Share Document