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

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10402 - Inorganic and nuclear chemistry

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2021

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Advanced Materials Interfaces [online]

ISSN

2196-7350

e-ISSN

—

Svazek periodika

8

Číslo periodika v rámci svazku

12

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

10

Strana od-do

2100122

Kód UT WoS článku

000653226500001

EID výsledku v databázi Scopus

2-s2.0-85106313463