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Enhanced Electrocatalytic Stability of Platinum Nanoparticles Supported on a Nitrogen-Doped Composite of Carbon Nanotubes and Mesoporous Titania under Oxygen Reduction Conditions

Authors

  • Justus Masa,

    1. Analytische Chemie–Elektroanalytik und Sensorik, Center for Electrochemical Sciences–CES, Ruhr-Univeristät Bochum, Universitätsstrasse 150, 44780 Bochum (Germany), Fax: (+49) 234-32-14683
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  • Dr. Ankur Bordoloi,

    1. Laboratory of Industrial Chemistry, Ruhr-University Bochum, Universitätsstrasse 150, 44780 Bochum (Germany), Fax: (+49) 234-32-14115
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  • Prof. Dr. Martin Muhler,

    1. Laboratory of Industrial Chemistry, Ruhr-University Bochum, Universitätsstrasse 150, 44780 Bochum (Germany), Fax: (+49) 234-32-14115
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  • Prof. Dr. Wolfgang Schuhmann,

    Corresponding author
    1. Analytische Chemie–Elektroanalytik und Sensorik, Center for Electrochemical Sciences–CES, Ruhr-Univeristät Bochum, Universitätsstrasse 150, 44780 Bochum (Germany), Fax: (+49) 234-32-14683
    • Analytische Chemie–Elektroanalytik und Sensorik, Center for Electrochemical Sciences–CES, Ruhr-Univeristät Bochum, Universitätsstrasse 150, 44780 Bochum (Germany), Fax: (+49) 234-32-14683
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  • Dr. Wei Xia

    Corresponding author
    1. Laboratory of Industrial Chemistry, Ruhr-University Bochum, Universitätsstrasse 150, 44780 Bochum (Germany), Fax: (+49) 234-32-14115
    • Laboratory of Industrial Chemistry, Ruhr-University Bochum, Universitätsstrasse 150, 44780 Bochum (Germany), Fax: (+49) 234-32-14115
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Abstract

original image

Cheers for titania: An N-doped composite of carbon nanotubes (CNTs) and mesoporous TiO2 is used as support for Pt nanoparticles applied in the oxygen reduction reaction. The composite Pt/N-TiO2-CNT shows a higher stability than Pt particles on carbon black or N-doped CNTs, as indicated by accelerated stress tests of up to 2000 cycles. The enhanced stability is attributed to strong interactions between TiO2 and Pt and a higher corrosion resistance of TiO2 as well as CNTs.

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