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Stability of TiO2 Promoted PtCo/C Catalyst for Oxygen Reduction Reaction

Chaisubanan, Napapat and Pruksathorn, Kejvalee and Vergnes, Hugues and Senocq, François and Hunsom, Mali Stability of TiO2 Promoted PtCo/C Catalyst for Oxygen Reduction Reaction. (2016) International Journal of Electrochemical Science (11). 1012-1028. ISSN 1452-3981

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Abstract

This work was carried out to explore the effect of TiO2 on activity and stability of a PtCo/C catalyst for an oxygen reduction reaction (ORR). Two types of TiO2, including commercial TiO2 (TCOM) and a home-prepared TiO2 by chemical vapor deposition (TCVD), were incorporated on the PtCo/C catalyst layer. The activity of all prepared-catalysts was tested in a single proton exchange membrane (PEM) fuel cell under an H2/O2 environment at ambient pressure, while their stability was tested by the linear sweep voltammetry (LSV) in 0.5 M H2SO4. The preliminary results demonstrated that the TCVD promoted PtCo/C catalyst (TCVD-PtCo/C) exhibited the highest activity in a PEM fuel cell for both activation polarization and ohmic polarization regions, which can produce the current density of 434 mA/cm2 (277 mW/cm2 or 1,847 W/gPtcm2) at 0.6 V. It also exhibited the highest stability in 0.5 M H2SO4 with performance loss of around 40% after 6,000 LSV-cycles.

Item Type:Article
HAL Id:hal-02091061
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Other partners > Chulalongkorn University (THAILAND)
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UPS (FRANCE)
Laboratory name:
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Deposited By: Yves MOMBOISSE
Deposited On:05 Apr 2019 11:33

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