Efficient Pt-C MEA for PEMFC with Low Platinum Content Prepared by Magnetron Sputtering

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F18%3A10385986" target="_blank" >RIV/00216208:11320/18:10385986 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1002/fuce.201700137" target="_blank" >https://doi.org/10.1002/fuce.201700137</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/fuce.201700137" target="_blank" >10.1002/fuce.201700137</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Efficient Pt-C MEA for PEMFC with Low Platinum Content Prepared by Magnetron Sputtering

Popis výsledku v původním jazyce

The presented research is focused on improvement of platinum utilization in Pt-C composite catalysts for proton exchange membrane fuel cell (PEMFC) applications. A series of 25nm thick nanostructured Pt-C thin films were deposited on carbon paper gas diffusion layer substrates (GDL; Sigracet 29BC) by a single-step magnetron sputtering method. Total Pt loading in the thin films varied in the range 6.7-9.7 mu g cm(-2) as determined by X-ray photoelectron spectroscopy (XPS). These catalysts were examined for their activity in hydrogen oxidation reaction (HOR) and oxygen reduction reaction (ORR), continuously operating for periods exceeding 24 hours. The dependence of cell output power on Pt concentration and on the working pressure in the cell was examined. Membrane electrode assembly (MEA) with both magnetron sputtered electrodes and a total (anode + cathode) Pt loading 16.7 mu g cm(-2) was also examined during an extended 250-hour durability test. A stable power density 0.73W cm(-2) was achieved with cell pressure of 300 kPa. Apart from reasonably small power fluctuations no long-term efficiency loss has been detected.

Název v anglickém jazyce

Efficient Pt-C MEA for PEMFC with Low Platinum Content Prepared by Magnetron Sputtering

Popis výsledku anglicky

The presented research is focused on improvement of platinum utilization in Pt-C composite catalysts for proton exchange membrane fuel cell (PEMFC) applications. A series of 25nm thick nanostructured Pt-C thin films were deposited on carbon paper gas diffusion layer substrates (GDL; Sigracet 29BC) by a single-step magnetron sputtering method. Total Pt loading in the thin films varied in the range 6.7-9.7 mu g cm(-2) as determined by X-ray photoelectron spectroscopy (XPS). These catalysts were examined for their activity in hydrogen oxidation reaction (HOR) and oxygen reduction reaction (ORR), continuously operating for periods exceeding 24 hours. The dependence of cell output power on Pt concentration and on the working pressure in the cell was examined. Membrane electrode assembly (MEA) with both magnetron sputtered electrodes and a total (anode + cathode) Pt loading 16.7 mu g cm(-2) was also examined during an extended 250-hour durability test. A stable power density 0.73W cm(-2) was achieved with cell pressure of 300 kPa. Apart from reasonably small power fluctuations no long-term efficiency loss has been detected.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10305 - Fluids and plasma physics (including surface physics)

Projekt

<a href="/cs/project/LM2015057" target="_blank" >LM2015057: Laboratoř fyziky povrchů – Optická dráha pro výzkum materiálů</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2018

Kód důvěrnosti údajů

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

Název periodika

Fuel Cells

ISSN

1615-6846

e-ISSN

—

Svazek periodika

18

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

6

Strana od-do

51-56

Kód UT WoS článku

000426166800007

EID výsledku v databázi Scopus

2-s2.0-85041671559