Top-Down Synthesis of Nanostructured Platinum−Lanthanide Alloy Oxygen Reduction Reaction Catalysts: PtxPr/C as an Example
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26620%2F19%3APU131815" target="_blank" >RIV/00216305:26620/19:PU131815 - isvavai.cz</a>
Result on the web
<a href="https://pubs.acs.org/doi/abs/10.1021/acsami.8b20174" target="_blank" >https://pubs.acs.org/doi/abs/10.1021/acsami.8b20174</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1021/acsami.8b20174" target="_blank" >10.1021/acsami.8b20174</a>
Alternative languages
Result language
angličtina
Original language name
Top-Down Synthesis of Nanostructured Platinum−Lanthanide Alloy Oxygen Reduction Reaction Catalysts: PtxPr/C as an Example
Original language description
The oxygen reduction reaction (ORR) is of great interest for future sustainable energy conversion and storage, especially concerning fuel cell applications. The preparation of active, affordable, and scalable electrocatalysts and their application in fuel cell engines of hydrogen cars is a prominent step toward the reduction of air pollution, especially in urban areas. Alloying nanostructured Pt with lanthanides is a promising approach to enhance its catalytic ORR activity, whereby the development of a simple synthetic route turned out to be a nontrivial endeavor. Herein, for the first time, we present a successful single-step, scalable top-down synthetic route for Pt− lanthanide alloy nanoparticles, as witnessed by the example of Pr-alloyed Pt nanoparticles. The catalyst was characterized by high-resolution transmission electron microscopy, energy-dispersive X-ray spectroscopy, X-ray diffraction, and photoelectron spectroscopy, and its electrocatalytic oxygen reduction activity was investigated using a rotating disk electrode technique. PtxPr/C showed ∼3.5 times higher [1.96 mA/cm2 Pt, 0.9 V vs reversible hydrogen electrode (RHE)] specific activity and ∼1.7 times higher (0.7 A/mgPt, 0.9 V vs RHE) mass activity compared to commercial Pt/C catalysts. On the basis of previous findings and characterization of the PtxPr/C catalyst, the activity improvement over commercial Pt/C originates from a lattice strain introduced by the alloying process.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
21001 - Nano-materials (production and properties)
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
ACS applied materials & interfaces
ISSN
1944-8244
e-ISSN
1944-8252
Volume of the periodical
11
Issue of the periodical within the volume
5
Country of publishing house
US - UNITED STATES
Number of pages
7
Pages from-to
5129-5135
UT code for WoS article
000458347900045
EID of the result in the Scopus database
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