Titanium suboxides as a catalyst support for PEMFC

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F09%3A00021637" target="_blank" >RIV/60461373:22310/09:00021637 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Titanium suboxides as a catalyst support for PEMFC

Popis výsledku v původním jazyce

Subject of this study was preparation of the platinum catalysts supported by the Magneli phases. Chemical reduction of the platinum salt by formaldehyde in water and by ethylene glycol with and without poly(vinylpyrrolidone) was tested. Prepared catalysts were characterized using cyclic voltammetry and linear sweep voltammetry both for hydrogen oxidation and oxygen reduction. SEM was used to characterize samples morphology. Selected catalysts were characterized in the laboratory fuel cell. Results showthat in the system under study either small nanoparticles with good distribution but small loading or large loading with larger clusters of nanoparticles can be obtained at the present state of knowledge. To obtain good distribution, high loading and small nanoparticles, support specific surface area higher than 100 m2 g 1 represents a necessary precondition. It can be therefore concluded, that the Magneli phases will not represent suitable replacement for carbon black in fuel cell appli

Název v anglickém jazyce

Titanium suboxides as a catalyst support for PEMFC

Popis výsledku anglicky

Subject of this study was preparation of the platinum catalysts supported by the Magneli phases. Chemical reduction of the platinum salt by formaldehyde in water and by ethylene glycol with and without poly(vinylpyrrolidone) was tested. Prepared catalysts were characterized using cyclic voltammetry and linear sweep voltammetry both for hydrogen oxidation and oxygen reduction. SEM was used to characterize samples morphology. Selected catalysts were characterized in the laboratory fuel cell. Results showthat in the system under study either small nanoparticles with good distribution but small loading or large loading with larger clusters of nanoparticles can be obtained at the present state of knowledge. To obtain good distribution, high loading and small nanoparticles, support specific surface area higher than 100 m2 g 1 represents a necessary precondition. It can be therefore concluded, that the Magneli phases will not represent suitable replacement for carbon black in fuel cell appli

Druh

D - Stať ve sborníku

CEP obor

CG - Elektrochemie

OECD FORD obor

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Projekt

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Návaznosti

R - Projekt Ramcoveho programu EK

Rok uplatnění

2009

Kód důvěrnosti údajů

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

Název statě ve sborníku

Electrochemical Seminar Prague - Dresden

ISBN

978-80-87351-03-1

ISSN

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e-ISSN

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Počet stran výsledku

2

Strana od-do

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Název nakladatele

J. Heyrovský Institute of Physical Chemistry

Místo vydání

Praha

Místo konání akce

Praha CZ

Datum konání akce

23. 11. 2009

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

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