scholarly journals Transient study of the oxygen reduction reaction on reduced Pt and Pt alloys microelectrodes: evidence for the reduction of pre-adsorbed oxygen species linked to dissolved oxygen

2015 ◽  
Vol 17 (44) ◽  
pp. 30005-30012 ◽  
Author(s):  
S. C. Perry ◽  
G. Denuault
Keyword(s):  
Dissolved Oxygen ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Reduction Reaction ◽  
Adsorbed Oxygen ◽  
Oxygen Species ◽  
Adsorbed Oxygen Species ◽  
Pt Alloys ◽  
Transient Study ◽  
Microdisc Electrodes

Below 100 ms the reduction of oxygen on oxide-free Pt microdisc electrodes reveals the existence of oxygen species which adsorb on the electrode before the reduction is electrochemically driven.

scholarly journals The oxygen reduction reaction (ORR) on reduced metals: evidence for a unique relationship between the coverage of adsorbed oxygen species and adsorption energy

2016 ◽  
Vol 18 (15) ◽  
pp. 10218-10223 ◽  
Author(s):  
S. C. Perry ◽  
G. Denuault
Keyword(s):  
Dissolved Oxygen ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Adsorption Energy ◽  
Reduction Reaction ◽  
Adsorbed Oxygen ◽  
Oxygen Species ◽  
Adsorbed Oxygen Species ◽  
Unique Relationship

The ORR current follows a volcano-like dependence on the coverage of oxygen species that adsorb upon exposure to dissolved oxygen and on their adsorption energy.

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