Metal–Support Interactions in a Molybdenum Oxide Anchored PtNi Alloy for Improving Oxygen Reduction Activity

2020 ◽  
Vol 3 (12) ◽  
pp. 12246-12253
Author(s):  
Shouquan Feng ◽  
Jinli Chen ◽  
Guangfu Qian ◽  
Yanshan Mo ◽  
Jiajia Lu ◽  
...  
Keyword(s):  
Oxygen Reduction ◽  
Molybdenum Oxide ◽  
Reduction Activity ◽  
Metal Support ◽  
Metal Support Interactions ◽  
Ptni Alloy

Changes induced by transition metal oxides in Pt nanoparticles unveil the effects of electronic properties on oxygen reduction activity

2019 ◽  
Vol 7 (5) ◽  
pp. 2075-2086 ◽  
Author(s):  
Felipe B. Ometto ◽  
Emilia A. Carbonio ◽  
Érico Teixeira-Neto ◽  
Hebe M. Villullas
Keyword(s):  
Transition Metal ◽  
Metal Oxides ◽  
Electronic Properties ◽  
Oxygen Reduction ◽  
Transition Metal Oxides ◽  
Pt Nanoparticles ◽  
Electronic Effects ◽  
Reduction Activity ◽  
Metal Support ◽  
Metal Support Interactions

Relevance of electronic effects in oxygen reduction on Pt nanoparticles is unveiled taking advantage of metal–support interactions.

Improvement in oxygen reduction activity of polypyrrole-coated PtNi alloy catalyst prepared for proton exchange membrane fuel cells

2014 ◽  
Vol 190 ◽  
pp. 48-55 ◽  
Author(s):  
Kyuhwan Hyun ◽  
Jin Hee Lee ◽  
Chang Won Yoon ◽  
Yong-Hun Cho ◽  
Lae-Hyun Kim ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Oxygen Reduction ◽  
Proton Exchange Membrane ◽  
Proton Exchange ◽  
Reduction Activity ◽  
Exchange Membrane ◽  
Ptni Alloy ◽  
Alloy Catalyst

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.

Strain Effects on Oxygen Reduction Activity of Pr2NiO4 Caused by Gold Bulk Dispersion for Low Temperature Solid Oxide Fuel Cells

2019 ◽  
Vol 2 (2) ◽  
pp. 1210-1220 ◽  
Author(s):  
Sun Jae Kim ◽  
Taner Akbay ◽  
Junko Matsuda ◽  
Atsushi Takagaki ◽  
Tatsumi Ishihara
Keyword(s):  
Fuel Cells ◽  
Low Temperature ◽  
Solid Oxide Fuel Cells ◽  
Oxygen Reduction ◽  
Solid Oxide ◽  
Oxide Fuel ◽  
Strain Effects ◽  
Reduction Activity

Unveiling the Roles of Lattice Strain and Descriptor Species on Pt-Like Oxygen Reduction Activity in Pd–Bi Catalysts

ACS Catalysis ◽  
2021 ◽  
pp. 800-808
Author(s):  
Shreya Sarkar ◽  
S. D. Ramarao ◽  
Tisita Das ◽  
Risov Das ◽  
C. P. Vinod ◽  
...  
Keyword(s):  
Oxygen Reduction ◽  
Lattice Strain ◽  
Reduction Activity
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