Strengthening Oxygen Reduction Activity and Stability of Carbon-Supported Platinum Nanoparticles by Fluorination

2021 ◽  
pp. 139409
Author(s):  
Ziheng Li ◽  
Lijun Sui ◽  
Laura Calvillo ◽  
Nicolas Alonso-Vante ◽  
Jiwei Ma
Keyword(s):  
Oxygen Reduction ◽  
Platinum Nanoparticles ◽  
Reduction Activity ◽  
Supported Platinum

scholarly journals Electronic metal-support interaction enhanced oxygen reduction activity and stability of boron carbide supported platinum

2017 ◽  
Vol 8 (1) ◽  
Author(s):  
Colleen Jackson ◽  
Graham T. Smith ◽  
David W. Inwood ◽  
Andrew S. Leach ◽  
Penny S. Whalley ◽  
...  
Keyword(s):  
Boron Carbide ◽  
Oxygen Reduction ◽  
Platinum Nanoparticles ◽  
Electronic Interaction ◽  
Acidic Media ◽  
X Ray ◽  
Reduction Activity ◽  
Supported Platinum ◽  
Metal Support Interaction ◽  
Metal Support

Abstract Catalysing the reduction of oxygen in acidic media is a standing challenge. Although activity of platinum, the most active metal, can be substantially improved by alloying, alloy stability remains a concern. Here we report that platinum nanoparticles supported on graphite-rich boron carbide show a 50–100% increase in activity in acidic media and improved cycle stability compared to commercial carbon supported platinum nanoparticles. Transmission electron microscopy and x-ray absorption fine structure analysis confirm similar platinum nanoparticle shapes, sizes, lattice parameters, and cluster packing on both supports, while x-ray photoelectron and absorption spectroscopy demonstrate a change in electronic structure. This shows that purely electronic metal-support interactions can significantly improve oxygen reduction activity without inducing shape, alloying or strain effects and without compromising stability. Optimizing the electronic interaction between the catalyst and support is, therefore, a promising approach for advanced electrocatalysts where optimizing the catalytic nanoparticles themselves is constrained by other concerns.

Facile Approach to Enhance Oxygen Reduction Activity by Modification of Platinum Nanoparticles by Melamine-Formaldehyde Polymer

2019 ◽  
Vol 166 (8) ◽  
pp. F498-F505 ◽  
Author(s):  
Masafumi Asahi ◽  
Shin-ichi Yamazaki ◽  
Noboru Taguchi ◽  
Tsutomu Ioroi
Keyword(s):  
Oxygen Reduction ◽  
Platinum Nanoparticles ◽  
Melamine Formaldehyde ◽  
Reduction Activity

Enhancement of oxygen reduction by incorporation of heteropolytungstate into the electrocatalytic ink of carbon supported platinum nanoparticles

2007 ◽  
Vol 52 (12) ◽  
pp. 3958-3964 ◽  
Author(s):  
Renata Wlodarczyk ◽  
Aneta Kolary-Zurowska ◽  
Roberto Marassi ◽  
Malgorzata Chojak ◽  
Pawel J. Kulesza
Keyword(s):  
Oxygen Reduction ◽  
Platinum Nanoparticles ◽  
Supported Platinum

Fabrication of MEA based on sulfonic acid functionalized carbon supported platinum nanoparticles for oxygen reduction reaction in PEMFCs

RSC Advances ◽  
2015 ◽  
Vol 5 (104) ◽  
pp. 85775-85784 ◽  
Author(s):  
Hussein Gharibi ◽  
Fatemeh Yasi ◽  
Mohammad Kazemeini ◽  
Ahmad Heydari ◽  
Farhad Golmohammadi
Keyword(s):  
Oxygen Reduction Reaction ◽  
Single Cell ◽  
Oxygen Reduction ◽  
Platinum Nanoparticles ◽  
Sulfonic Acid ◽  
Reduction Reaction ◽  
Polarization Curves ◽  
Supported Platinum

Polarization curves of a single cell at 80 °C and different relative humidities.

Sulfonation of graphene nanosheet-supported platinum via a simple thermal-treatment toward its oxygen reduction activity in acid medium

2012 ◽  
Vol 37 (19) ◽  
pp. 14205-14210 ◽  
Author(s):  
Tai-Feng Hung ◽  
Bei Wang ◽  
Chi-Wen Tsai ◽  
Meng-Hsiu Tu ◽  
Guo-Xiu Wang ◽  
...  
Keyword(s):  
Thermal Treatment ◽  
Oxygen Reduction ◽  
Acid Medium ◽  
Graphene Nanosheet ◽  
Reduction Activity ◽  
Supported Platinum
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