Enhanced Oxygen Reduction Reaction Activity and Characterization of Pt–Pd/C Bimetallic Fuel Cell Catalysts with Pt-Enriched Surfaces in Acid Media

2012 ◽  
Vol 116 (44) ◽  
pp. 23453-23464 ◽  
Author(s):  
Licheng Liu ◽  
Gabor Samjeske ◽  
Shin-ichi Nagamatsu ◽  
Oki Sekizawa ◽  
Kensaku Nagasawa ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Reduction Reaction ◽  
Oxygen Reduction Reaction Activity ◽  
Acid Media ◽  
Fuel Cell Catalysts

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.

Tuning the morphology of CeO2 nanostructures using a template-free solvothermal process and their oxygen reduction reaction activity

2020 ◽  
Vol 49 (48) ◽  
pp. 17594-17604
Author(s):  
Debanjali Ghosh ◽  
Shaikh Parwaiz ◽  
Paritosh Mohanty ◽  
Debabrata Pradhan
Keyword(s):  
Fuel Cell ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Reduction Reaction ◽  
Cathode Catalyst ◽  
Solvothermal Process ◽  
Oxygen Reduction Reaction Activity ◽  
Template Free

Solvothermally synthesized diverse shaped CeO2 nanostructures show excellent oxygen reduction reaction activity, suitable as a cathode catalyst in fuel cell.

Oxygen reduction reaction activity of nitrogen-doped titanium oxide in acid media

2013 ◽  
Vol 88 ◽  
pp. 697-707 ◽  
Author(s):  
Mitsuharu Chisaka ◽  
Akimitsu Ishihara ◽  
Kazuaki Suito ◽  
Ken-ichiro Ota ◽  
Hirokazu Muramoto
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Titanium Oxide ◽  
Reduction Reaction ◽  
Oxygen Reduction Reaction Activity ◽  
Acid Media ◽  
Nitrogen Doped

Oxygen Hydration Mechanism for the Oxygen Reduction Reaction at Pt and Pd Fuel Cell Catalysts

2011 ◽  
Vol 2 (6) ◽  
pp. 572-576 ◽  
Author(s):  
Yao Sha ◽  
Ted H. Yu ◽  
Boris V. Merinov ◽  
Pezhman Shirvanian ◽  
William A. Goddard
Keyword(s):  
Fuel Cell ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Reduction Reaction ◽  
Hydration Mechanism ◽  
Fuel Cell Catalysts

Beyond conventional electrocatalysts: hollow nanoparticles for improved and sustainable oxygen reduction reaction activity

2014 ◽  
Vol 2 (43) ◽  
pp. 18497-18507 ◽  
Author(s):  
Laetitia Dubau ◽  
Miguel Lopez-Haro ◽  
Julien Durst ◽  
Laure Guétaz ◽  
Pascale Bayle-Guillemaud ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Proton Exchange Membrane ◽  
Reduction Reaction ◽  
Proton Exchange ◽  
Oxygen Reduction Reaction Activity ◽  
Hollow Nanoparticles ◽  
Electrocatalytic Performance ◽  
Exchange Membrane

The hollow PtxNi1−x/C nanocrystallites are capable of fulfilling cost, electrocatalytic performance, and durability requirements of proton-exchange membrane fuel cell applications.

A review of heat-treatment effects on activity and stability of PEM fuel cell catalysts for oxygen reduction reaction

2007 ◽  
Vol 173 (2) ◽  
pp. 891-908 ◽  
Author(s):  
Cicero W.B. Bezerra ◽  
Lei Zhang ◽  
Hansan Liu ◽  
Kunchan Lee ◽  
Aldaléa L.B. Marques ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Fuel Cell ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Treatment Effects ◽  
Pem Fuel Cell ◽  
Reduction Reaction ◽  
Fuel Cell Catalysts

Standardized Protocols for Platinum Group Metal-Free Fuel Cell Catalysts for Oxygen Reduction Reaction

2021 ◽  
Vol MA2021-02 (39) ◽  
pp. 1149-1149
Author(s):  
Piotr Zelenay ◽  
Hanguang Zhang ◽  
Luigi Osmieri ◽  
Jaehyung Park ◽  
Ahmed A Farghaly ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Platinum Group Metal ◽  
Reduction Reaction ◽  
Metal Free ◽  
Group Metal ◽  
Fuel Cell Catalysts ◽  
Platinum Group
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