LrgpV1, Main, Exploration, bibRecord, 000330

Development of half-cells with sulfonated Pt/Vulcan catalyst for PEM fuel cells

Identifieur interne : 000330 ( Main/Exploration ); précédent : 000329; suivant : 000331

Development of half-cells with sulfonated Pt/Vulcan catalyst for PEM fuel cells

Auteurs : Yuzhen Xia [France] ; Thi-Thao Nguyen [France] ; Sébastien Fontana [France] ; Alexandre Desforges [France] ; Jean-François Marêché [France] ; Caroline Bonnet [France] ; François Lapicque [France]

Source :

RBID : Hal:hal-01275417

Abstract

Half-cell is an ex situ device generally used in fuel cell investigations. The present work is related to half-cell investigations of a particular catalyst for polymer electrolyte membrane (PEM) fuel cells, namely Pt/Vulcan catalyst grafted with 5 wt.% polystyrene sulfonate (PSSA). It was found that the behavior of the half-cell to be immersed in a sulfuric solution was influenced by the hot-pressing conditions in the preparation process: optimum hot-pressing conditions had to be searched for improved, reliable performance of half cells. A stable Naflon (R) membrane interface on the catalytic layer (CL) was obtained at 135 degrees C, 40 bars for 6 min. Otherwise, owing to the ion-exchange properties of the PSSA graft, electrodes were prepared with lower amounts of Naflon (R) and the effect of Naflori introduction in the preparation was discussed: test electrodes mounted in half-cell had either 0.25 or 0.50 mg cm(-2) Naflon (R) dispersed in CL, or with 0.50 mg cm(-2) deposited on CL surface. Their performances for oxygen reduction reaction (ORR) were studied using linear voltammetry (LV) and electrochemical impedance spectroscopy (EIS). Cyclic voltammetry was used for determination of the electrochemical surface area (ECSA) of each electrode. It has been shown that fresh electrodes with 0.50 mg cm(-2) Naflon (R) dispersed in CL exhibit promoted behavior in ORR. However, the GDE prepared with Naflon' deposition on CL surface exhibits the best resistance to ageing tests performed by potential cycling between 0 and 1.2 V/NHE, as revealed by ECSA measurements.

Url:

https://hal.univ-lorraine.fr/hal-01275417

DOI: 10.1016/j.jelechem.2014.04.007

Affiliations:

Links toward previous steps (curation, corpus...)

to stream Hal, to step Corpus: 000335
to stream Hal, to step Curation: 000335
to stream Hal, to step Checkpoint: 000317
to stream Main, to step Merge: 000338
to stream Main, to step Curation: 000330

Le document en format XML

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<author><name sortKey="Bonnet, Caroline" sort="Bonnet, Caroline" uniqKey="Bonnet C" first="Caroline" last="Bonnet">Caroline Bonnet</name>
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<region type="old region" nuts="2">Lorraine (région)</region>
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<placeName><settlement type="city">Nancy</settlement>
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<idno type="DOI">10.1016/j.jelechem.2014.04.007</idno>
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<front><div type="abstract" xml:lang="en">Half-cell is an ex situ device generally used in fuel cell investigations. The present work is related to half-cell investigations of a particular catalyst for polymer electrolyte membrane (PEM) fuel cells, namely Pt/Vulcan catalyst grafted with 5 wt.% polystyrene sulfonate (PSSA). It was found that the behavior of the half-cell to be immersed in a sulfuric solution was influenced by the hot-pressing conditions in the preparation process: optimum hot-pressing conditions had to be searched for improved, reliable performance of half cells. A stable Naflon (R) membrane interface on the catalytic layer (CL) was obtained at 135 degrees C, 40 bars for 6 min. Otherwise, owing to the ion-exchange properties of the PSSA graft, electrodes were prepared with lower amounts of Naflon (R) and the effect of Naflori introduction in the preparation was discussed: test electrodes mounted in half-cell had either 0.25 or 0.50 mg cm(-2) Naflon (R) dispersed in CL, or with 0.50 mg cm(-2) deposited on CL surface. Their performances for oxygen reduction reaction (ORR) were studied using linear voltammetry (LV) and electrochemical impedance spectroscopy (EIS). Cyclic voltammetry was used for determination of the electrochemical surface area (ECSA) of each electrode. It has been shown that fresh electrodes with 0.50 mg cm(-2) Naflon (R) dispersed in CL exhibit promoted behavior in ORR. However, the GDE prepared with Naflon' deposition on CL surface exhibits the best resistance to ageing tests performed by potential cycling between 0 and 1.2 V/NHE, as revealed by ECSA measurements.</div>
</front>
</TEI>
<affiliations><list><country><li>France</li>
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<region><li>Grand Est</li>
<li>Lorraine (région)</li>
</region>
<settlement><li>Metz</li>
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<tree><country name="France"><region name="Grand Est"><name sortKey="Xia, Yuzhen" sort="Xia, Yuzhen" uniqKey="Xia Y" first="Yuzhen" last="Xia">Yuzhen Xia</name>
</region>
<name sortKey="Bonnet, Caroline" sort="Bonnet, Caroline" uniqKey="Bonnet C" first="Caroline" last="Bonnet">Caroline Bonnet</name>
<name sortKey="Desforges, Alexandre" sort="Desforges, Alexandre" uniqKey="Desforges A" first="Alexandre" last="Desforges">Alexandre Desforges</name>
<name sortKey="Fontana, Sebastien" sort="Fontana, Sebastien" uniqKey="Fontana S" first="Sébastien" last="Fontana">Sébastien Fontana</name>
<name sortKey="Lapicque, Francois" sort="Lapicque, Francois" uniqKey="Lapicque F" first="François" last="Lapicque">François Lapicque</name>
<name sortKey="Mareche, Jean Francois" sort="Mareche, Jean Francois" uniqKey="Mareche J" first="Jean-François" last="Marêché">Jean-François Marêché</name>
<name sortKey="Nguyen, Thi Thao" sort="Nguyen, Thi Thao" uniqKey="Nguyen T" first="Thi-Thao" last="Nguyen">Thi-Thao Nguyen</name>
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Development of half-cells with sulfonated Pt/Vulcan catalyst for PEM fuel cells

Development of half-cells with sulfonated Pt/Vulcan catalyst for PEM fuel cells

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