A Facile Way for Acquisition of a Nanoporous Pt-C Catalyst for Oxygen Reduction Reaction

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F21%3A10439496" target="_blank" >RIV/00216208:11320/21:10439496 - isvavai.cz</a>
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=erZF7fkv-F" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=erZF7fkv-F</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1002/admi.202100122" target="_blank" >10.1002/admi.202100122</a>

Result language
angličtina
Original language name
A Facile Way for Acquisition of a Nanoporous Pt-C Catalyst for Oxygen Reduction Reaction
Original language description
Here, the concept of preferential leaching of cerium oxide on ternary Pt-C-CeO2 compound is demonstrated in order to develop a cost-effective catalyst for the cathode in proton exchange membrane fuel cells. The Pt-C-CeO2 thin film catalyst is prepared by simultaneous magnetron co-sputtering of Pt, C, and CeO2. The morphology, structure, and composition of the Pt-C-CeO2 layer are characterized by transmission electron microscopy, scanning electron microscopy, energy dispersive X-ray spectroscopy, X-ray photoelectron spectroscopy, and X-ray diffraction. Both half-cell and single-cell tests are performed to determine its activity and durability. During an activation electrochemical cycling procedure, CeO2 is leached from the compound, leaving behind a porous Pt-C matrix which exhibits almost 3 times higher electrochemically active surface area in comparison with pure Pt with identical loading before and even after accelerated degradation tests in the half-cell. When used as the cathode in a single-cell membrane electrode assembly, decomposed Pt-C-CeO2 also shows greater power density than pure Pt.
Czech name
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Czech description
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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
10402 - Inorganic and nuclear chemistry

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)

Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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