Seemingly Negligible Amounts of Platinum Nanoparticles Mislead Electrochemical Oxygen Reduction Reaction Pathway on Platinum Single‐Atom Catalysts

2020 ◽  
Vol 7 (18) ◽  
pp. 3716-3719 ◽  
Author(s):  
Sangyong Shin ◽  
Hee‐Eun Kim ◽  
Beom‐Sik Kim ◽  
Sun Seo Jeon ◽  
Hojin Jeong ◽  
...  
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Platinum Nanoparticles ◽  
Reaction Pathway ◽  
Reduction Reaction ◽  
Single Atom ◽  
Electrochemical Oxygen

Optimizing the Size of Platinum Nanoparticles for Enhanced Mass Activity in the Electrochemical Oxygen Reduction Reaction

2019 ◽  
Vol 58 (28) ◽  
pp. 9596-9600 ◽  
Author(s):  
Batyr Garlyyev ◽  
Kathrin Kratzl ◽  
Marlon Rück ◽  
Jan Michalička ◽  
Johannes Fichtner ◽  
...  
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Platinum Nanoparticles ◽  
Reduction Reaction ◽  
Mass Activity ◽  
Electrochemical Oxygen

scholarly journals Fabricating high-loading Fe-N4 single-atom catalysts for oxygen reduction reaction by carbon-assisted pyrolysis of metal complexes

2021 ◽  
Vol 42 (5) ◽  
pp. 753-761
Author(s):  
Jun-Sheng Jiang ◽  
He-Lei Wei ◽  
Ai-Dong Tan ◽  
Rui Si ◽  
Wei-De Zhang ◽  
...  
Keyword(s):  
Oxygen Reduction Reaction ◽  
Metal Complexes ◽  
Oxygen Reduction ◽  
Reduction Reaction ◽  
High Loading ◽  
Single Atom

Electrochemical and spectroscopic characterization of a dicobalt macrocyclic Pacman complex in the catalysis of the oxygen reduction reaction in acid media

2013 ◽  
Vol 17 (04) ◽  
pp. 252-258 ◽  
Author(s):  
Qinggang He ◽  
Xiao Cheng ◽  
Ying Wang ◽  
Ruimin Qiao ◽  
Wanli Yang ◽  
...  
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Reaction Pathway ◽  
Spectroscopic Characterization ◽  
Reduction Reaction ◽  
Acid Media ◽  
Crystal Fields ◽  
Mononuclear Cobalt ◽  
X Ray Absorption

The dicobalt complex [ Co2(L2) ] of a Schiff-base pyrrole macrocycle adopts a Pacman structure in solution and the solid state and shows much greater catalytic activity and selectivity for the four-electron oxygen reduction reaction (ORR) than the mononuclear cobalt phthalocyanine (CoPc) counterpart. Soft X-ray absorption spectroscopy (XAS) shows that the Co center in Co2(L2) is of the same valence as mononuclear CoPc . However, the former complex shows higher unoccupied Co 3d density which is believed to be beneficial for electron transfers. Furthermore, the XAS data suggests that the crystal fields for Co2(L2) and CoPc are different, and that an interaction remains between two Co atoms in Co2(L2) . DFT calculations imply that the sterically hindered, cofacial structure of the dicobalt complex is critical for the operation of the four-electron reaction pathway during the ORR.

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