Improved Platinum Electrocatalyst for the Oxygen Reduction Reaction Using Nitrogen-Modified Carbon Support

2019 ◽  
Vol 41 (1) ◽  
pp. 1161-1171 ◽  
Author(s):  
Iris Herrmann-Geppert ◽  
Joerg Radnik ◽  
Ulrike I. Kramm ◽  
Sebastian Fiechter ◽  
Peter Bogdanoff
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Carbon Support ◽  
Reduction Reaction ◽  
Platinum Electrocatalyst

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

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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