Effect of Carbon Support on Fe-N3/C Model Active Site for the Oxygen Reduction Reaction

2019 ◽  
Vol 92 (8) ◽  
pp. 523-532 ◽  
Author(s):  
Holly M Fruehwald ◽  
Olena V Zenkina ◽  
E. Bradley Easton
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Active Site ◽  
Carbon Support ◽  
Reduction Reaction

The role of pre-defined microporosity in catalytic site formation for the oxygen reduction reaction in iron- and nitrogen-doped carbon materials

2017 ◽  
Vol 5 (8) ◽  
pp. 4199-4206 ◽  
Author(s):  
Minhyoung Kim ◽  
Hee Soo Kim ◽  
Sung Jong Yoo ◽  
Won Cheol Yoo ◽  
Yung-Eun Sung
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Active Site ◽  
Carbon Materials ◽  
Carbon Support ◽  
Reduction Reaction ◽  
Site Formation ◽  
Nitrogen Doped ◽  
Nitrogen Doped Carbon

We investigated the carbon support microporosity effect on active site formation for the oxygen reduction reaction in Fe–N–C catalysts.

Development of high stable Pt-based ORR catalyst over Mn-modified polyaniline-based carbon nanofiber

2021 ◽  
Author(s):  
Hong Zhu ◽  
Qingjun Chen ◽  
Jinghua Yu ◽  
Qian Zhou ◽  
Fanghui Wang ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Proton Exchange Membrane ◽  
Carbon Nanofiber ◽  
Carbon Support ◽  
Reduction Reaction ◽  
Proton Exchange ◽  
Key Factors ◽  
Exchange Membrane

The corrosion of carbon support is one of key factors causing deactivation of Pt-based oxygen reduction reaction (ORR) catalysts for proton exchange membrane fuel cells. In this work, a highly...

scholarly journals Probing the Influence of the Carbon Support on the Activity of Fe-N3/C Model Active Sites for the Oxygen Reduction Reaction

2020 ◽  
Vol 167 (8) ◽  
pp. 084520
Author(s):  
Holly M. Fruehwald ◽  
Iraklii I. Ebralidze ◽  
Peter D. Melino ◽  
Olena V. Zenkina ◽  
E. Bradley Easton
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Active Sites ◽  
Carbon Support ◽  
Reduction Reaction

Oxygen Reduction Reaction Activity of Nanocolumnar Pt Thin Film Electrocatalyst Deposited on Carbon Support By High Pressure Sputtering

2020 ◽  
Vol MA2020-02 (53) ◽  
pp. 3859-3859
Author(s):  
Assem Omar Basurrah ◽  
Busra Ergul ◽  
Zhiwei Yang ◽  
Ranjitha Hariharalakshmanan ◽  
Tansel Karabacak
Keyword(s):  
Thin Film ◽  
High Pressure ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Carbon Support ◽  
Reduction Reaction ◽  
Oxygen Reduction Reaction Activity

Investigation of the Active Site for the Oxygen Reduction Reaction on the Oxide Surface Using by In-Situ XAFS Method

2018 ◽  
Vol 85 (13) ◽  
pp. 865-872 ◽  
Author(s):  
Takahiro Saida ◽  
Shoko Hirano ◽  
Etsuko Niwa ◽  
Fumiaki Sato ◽  
Takahiro Maruyama
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Active Site ◽  
Reduction Reaction ◽  
Oxide Surface ◽  
In Situ Xafs

Oxygen Reduction Reaction Evaluation of Platinum Catalysts Formed via the Reactive Spray Deposition Technique

2011 ◽  
Author(s):  
Justin Roller ◽  
Radenka Maric ◽  
Roberto Neagu ◽  
Frank Orfino
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Platinum Catalyst ◽  
Spray Deposition ◽  
Research Work ◽  
Carbon Support ◽  
Reduction Reaction ◽  
Intrinsic Activity ◽  
Rotating Disc ◽  
Direct Deposition

Reactive Spray Deposition Technology (RSDT) is a fabrication process developed for the 1-step deposition of platinum catalyst, carbon support and ionomer directly onto a Nafion® membrane. The process involves pumping a platinum-organic solute dissolved in a combustible solvent through an atomizer. The spray is then combusted and nanosized particles of platinum are produced and subsequently cooled by a gas quench. Once the reaction plume is cooled a secondary set of nozzles is used to inject the carbon support and ionomer. The quench air cools the reactive zone enough to allow direct deposition onto a Nafion® electrolyte or a glassy carbon electrode. This arrangement thus realizes a process for one-step catalyst formation, dispersion onto carbon and direct deposition onto an electrolyte membrane. The independent control of the three components allows for real-time control of the carbon, platinum, and ionomer ratios in the final electrode. In this research work we examine the oxygen reduction reaction via a rotating disc three electrode set-up to understand the intrinsic activity of the as-sprayed platinum. The mass and specific activities were measured in a 0.1 M perchloric acid electrolyte under different deposition conditions and loading was verified by atomic emission spectroscopy inductively coupled plasma (AES-ICP). A range of microscopy images for visualization of the microstructure are also presented. The initial results show that the RSDT technique is capable of producing catalysts with oxygen reduction mass activity at 0.9 V of 200 mA/mgPt rotating at 1600 rpm and 30 °C.

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