AustralieFrV1, Main, Exploration, bibRecord, 008800

Improvement of the sputtered platinum utilization in proton exchange membrane fuel cells using plasma-based carbon nanofibres

Identifieur interne : 008800 ( Main/Exploration ); précédent : 008799; suivant : 008801

Improvement of the sputtered platinum utilization in proton exchange membrane fuel cells using plasma-based carbon nanofibres

Auteurs : A. Caillard [Australie, France] ; C. Charles [Australie] ; R. Boswell [Australie] ; P. Brault [France]

Source :

Journal of Physics D: Applied Physics [ 0022-3727 ] ; 2008.

RBID : ISTEX:78ABA4092C5144D57BC1050FCD4DAC2D089BE60C

Descripteurs français

Pascal (Inist)
- Catalyseur, Nanofibre, Performance, Pile combustible membrane échangeuse proton, Plasma, Platine, Propriété électrique.
Wicri :
- topic : Pile à combustible, Platine.

English descriptors

KwdEn :
- Active layer, Appl, Backpressure, Basf fuel cell, Boswell, Brault, Caillard, Carbon paper, Carbon support, Carbon vulcan particles, Catalyst, Catalytic layer, Cathode side, Cell voltage, Cnfs, Commercial cathode, Commercial electrode, Current density, Deposition, Double layer, Electrical performance, Electrical properties, Electrochem, Electrode, Fuel cell, Fuel cell performance, Gure, Lett, Maximum power density, Meas, Mgpt, Microporous, Microporous layer, Nanofiber, Nanostructured, Performance, Phys, Plasma, Plasma processes, Platinum, Platinum utilization, Polarization curves, Power density, Power sources, Proton exchange membrane fuel cells, Reference assembly, Substrate holder, Tted, Vulcan, Vulcan carbon particles, Vulcan cnfs, Vulcan particles.
Teeft :
- Active layer, Appl, Backpressure, Basf fuel cell, Boswell, Brault, Caillard, Carbon paper, Carbon support, Carbon vulcan particles, Catalytic layer, Cathode side, Cell voltage, Cnfs, Commercial cathode, Commercial electrode, Current density, Deposition, Double layer, Electrical performance, Electrochem, Electrode, Fuel cell, Fuel cell performance, Gure, Lett, Maximum power density, Meas, Mgpt, Microporous, Microporous layer, Nanostructured, Phys, Plasma processes, Platinum, Platinum utilization, Polarization curves, Power density, Power sources, Reference assembly, Substrate holder, Tted, Vulcan, Vulcan carbon particles, Vulcan cnfs, Vulcan particles.

Abstract

Proton exchange membrane fuel cells are complex nanostructures containing a catalyst (usually platinum), proton and electron conductors and pores. Their electrode performance is strongly influenced by the size, the repartition and the orientation of the nanoseparated materials used and the pores. This paper investigates the electrical performance achieved by three designs of plasma-prepared Pt/C electrodes with low Pt loadings (from 0.01 to 0.1mgPtcm2). A plasma sputtering process was used for the synthesis of Pt nano-clusters in three different microporous supports: a single oriented layer based on aligned carbon nanofibres (CNFs, custom-made by plasma), a single convoluted layer based on Vulcan carbon particles (LT1600, known as a gas diffusion layerGDL) or a double layer composed of CNFs covering a GDL. Membrane electrode assemblies (MEAs) were prepared by hot-pressing one of these three electrodes with a commercial electrode (0.5mgPtcm2) and a commercial Nafion 115 membrane, and compared with a reference MEA (from Electrochem Inc. with a Pt loading per electrode of 0.5mgPtcm2 and a maximum power density of 425mWcm2). The cathodic Pt utilization efficiency in the best performing plasma-prepared cathode (based on the double layer GDL/CNF) with a Pt loading of 0.1mgPtcm2 is 3.6 times higher than that measured for the commercial cathode (3.1 versus ). On the anode side, the three designs of plasma-prepared electrodes with 0.01mgPtcm2 lead to similar MEA performance than a commercial electrode at high backpressure (3bar). At a lower backpressure, the GDL/CNF electrode is the best performing plasma-prepared anode.

Url:

https://api.istex.fr/document/78ABA4092C5144D57BC1050FCD4DAC2D089BE60C/fulltext/pdf

DOI: 10.1088/0022-3727/41/18/185307

Affiliations:

Australie, France

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<front><div type="abstract">Proton exchange membrane fuel cells are complex nanostructures containing a catalyst (usually platinum), proton and electron conductors and pores. Their electrode performance is strongly influenced by the size, the repartition and the orientation of the nanoseparated materials used and the pores. This paper investigates the electrical performance achieved by three designs of plasma-prepared Pt/C electrodes with low Pt loadings (from 0.01 to 0.1mgPtcm2). A plasma sputtering process was used for the synthesis of Pt nano-clusters in three different microporous supports: a single oriented layer based on aligned carbon nanofibres (CNFs, custom-made by plasma), a single convoluted layer based on Vulcan carbon particles (LT1600, known as a gas diffusion layerGDL) or a double layer composed of CNFs covering a GDL. Membrane electrode assemblies (MEAs) were prepared by hot-pressing one of these three electrodes with a commercial electrode (0.5mgPtcm2) and a commercial Nafion 115 membrane, and compared with a reference MEA (from Electrochem Inc. with a Pt loading per electrode of 0.5mgPtcm2 and a maximum power density of 425mWcm2). The cathodic Pt utilization efficiency in the best performing plasma-prepared cathode (based on the double layer GDL/CNF) with a Pt loading of 0.1mgPtcm2 is 3.6 times higher than that measured for the commercial cathode (3.1 versus ). On the anode side, the three designs of plasma-prepared electrodes with 0.01mgPtcm2 lead to similar MEA performance than a commercial electrode at high backpressure (3bar). At a lower backpressure, the GDL/CNF electrode is the best performing plasma-prepared anode.</div>
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Improvement of the sputtered platinum utilization in proton exchange membrane fuel cells using plasma-based carbon nanofibres

Improvement of the sputtered platinum utilization in proton exchange membrane fuel cells using plasma-based carbon nanofibres

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Descripteurs français

English descriptors

Abstract

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