AustralieFrV1, Main, Exploration, bibRecord, 00A887

Plasma sputtering deposition of platinum into porous fuel cell electrodes

Identifieur interne : 00A887 ( Main/Exploration ); précédent : 00A886; suivant : 00A888

Plasma sputtering deposition of platinum into porous fuel cell electrodes

Auteurs : P. Brault [France] ; A. Caillard [France] ; A L Thomann [France] ; J. Mathias [France] ; C. Charles [Australie] ; R W Boswell [Australie] ; S. Escribano [France] ; J. Durand [France] ; T. Sauvage [France]

Source :

Journal of Physics D: Applied Physics [ 0022-3727 ] ; 2004.

RBID : ISTEX:3A8C6DC12EDF1C20B4DCCC8382AED09E6E5071BE

Descripteurs français

Pascal (Inist)
- Amas particule, C, Carbone, Distribution concentration, Dépôt plasma, Dépôt pulvérisation, Electrode poreuse, Microscopie électronique balayage, Nanoparticule, Pile combustible, Profil profondeur, Pt, RBS.
Wicri :
- topic : Carbone, Pile à combustible, Platine.

English descriptors

Abstract

Platinum is deposited into porous carbon materials relevant for fuel cell electrodes using plasma sputtering techniques. The resulting platinum concentration profile extends up to 2m into the porous carbon and is well fitted by a generalized stretched Gaussian function, which displays the non-thermal nature of the penetration process. Platinum deposits are observed to grow as clusters. On the outermost carbon particles, platinum nano-cluster sizes of 3.5nm have been measured. In tests using actual PEM fuel cells, current densities as high as 1000mAcm2 have been obtained at 400mV with 25cm2 plasma electrodes. This compares favourably with commercially available electrodes but the present electrodes have a platinum density 4.5 times lower and hence can be considered to be significantly more efficient.

Url:

https://api.istex.fr/document/3A8C6DC12EDF1C20B4DCCC8382AED09E6E5071BE/fulltext/pdf

DOI: 10.1088/0022-3727/37/24/010

Affiliations:

Le document en format XML

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<term>Concentration distribution</term>
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<front><div type="abstract">Platinum is deposited into porous carbon materials relevant for fuel cell electrodes using plasma sputtering techniques. The resulting platinum concentration profile extends up to 2m into the porous carbon and is well fitted by a generalized stretched Gaussian function, which displays the non-thermal nature of the penetration process. Platinum deposits are observed to grow as clusters. On the outermost carbon particles, platinum nano-cluster sizes of 3.5nm have been measured. In tests using actual PEM fuel cells, current densities as high as 1000mAcm2 have been obtained at 400mV with 25cm2 plasma electrodes. This compares favourably with commercially available electrodes but the present electrodes have a platinum density 4.5 times lower and hence can be considered to be significantly more efficient.</div>
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Plasma sputtering deposition of platinum into porous fuel cell electrodes

Plasma sputtering deposition of platinum into porous fuel cell electrodes

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Descripteurs français

English descriptors

Abstract

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