Activity-Stability Relationship in Compositionally Tuned Magnetron Co-Sputtered Bimetallic Catalysts for Proton Exchange Membrane Fuel Cells
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F25%3A10503172" target="_blank" >RIV/00216208:11320/25:10503172 - isvavai.cz</a>
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=FlN1Npi4P9" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=FlN1Npi4P9</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1002/fuce.202400095" target="_blank" >10.1002/fuce.202400095</a>
Alternative languages
Result language
angličtina
Original language name
Activity-Stability Relationship in Compositionally Tuned Magnetron Co-Sputtered Bimetallic Catalysts for Proton Exchange Membrane Fuel Cells
Original language description
In the present study, magnetron-sputtered PtxM100-x (M = Co, Cu, and Y; x = 25, 50, 75, and 100) bimetallic alloys were investigated as PEMFC cathodes. Accurate composition and layer thickness control enabled a systematic study of the correlation between the alloy composition, its activity, and stability. The catalysts underwent thorough characterization, employing a diverse portfolio of characterization techniques such as scanning electron microscopy, energy-dispersive X-ray spectroscopy, X-ray photoelectron spectroscopy, X-ray diffraction, and cyclic voltammetry. The activity of all investigated alloys was tested directly in a fuel cell device, whereas stability was assessed through potentiodynamic cycling in a half-cell. The activity-stability index, considering experimental results for both activity and stability, was calculated and compared for all investigated catalysts. All alloys exhibited a volcano-type trend in the activity-stability index as a function of the concentration of the alloying element with maxima observed for Pt50Co50, Pt50Cu50, and Pt75Y25 for respective alloys, surpassing that of monometallic platinum. Overall, Pt50Co50 emerged as a catalyst with the highest activity-stability ratio.
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
10305 - Fluids and plasma physics (including surface physics)
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
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Fuel Cells
ISSN
1615-6846
e-ISSN
1615-6854
Volume of the periodical
25
Issue of the periodical within the volume
2
Country of publishing house
DE - GERMANY
Number of pages
12
Pages from-to
nestránkováno
UT code for WoS article
001384368300001
EID of the result in the Scopus database
2-s2.0-85213554115