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Electrocatalytical Activity of Polypyrrole-Pt Composites.

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F05%3A00014021" target="_blank" >RIV/60461373:22310/05:00014021 - isvavai.cz</a>

  • Result on the web

  • DOI - Digital Object Identifier

Alternative languages

  • Result language

    angličtina

  • Original language name

    Electrocatalytical Activity of Polypyrrole-Pt Composites.

  • Original language description

    The work reported is focused on the new electrocatalytic composite materials based on the polypyrrole and platinum. They are designed for fuel cell applications. Proton exchange membrane fuel cells (PEMFC) are potentially an efficient and ecologically friendly power source for the future. Nowadays the most important drawback of the methanol PEMFC is the poor resistivity of the catalyst to poisoning by carbon-based by-products. The present design of the catalyst layer is usually based on a carbon-black supported catalyst impregnated with Nafion. In this case also the problem of three phase contact often arises. The use of conducting polymers (CP) has been suggested as an alternative solution to this problem. CPs exhibit intrinsic electronic conductivityas well as sufficient ionic conductivity. Furthermore it has been reported that incorporation of the catalyst into the CP improves its resistivity to poisoning. The aim of this study was to prepare polypyrrole (PPy) films modified by Pt

  • Czech name

    Elektrokatalytická aktivita kompozitů typu polypyrrol-platina.

  • Czech description

    Byly studovány kompozity typu polypyrrol/Pt s ohledem na jejich možné využití v palivových článcích. Toto uspořádání by oproti klasickým katalyzátorům na bázi uhlíkového nosiče mělo vést ke zlepšení odolnosti katalyzátoru vůči otravě oxidem uhelnatým. Kompozity byly připraveny elektrochemickou oxidací pyrrolu za vzniku polypyrrolového filmu a následnou galvanostatickou modifikací Pt. Aktivita byla stanovena cyklickou voltametrií na rotační diskové elektrodě. Morfologie vzorků byla studována pomocí SEM.

Classification

  • Type

    O - Miscellaneous

  • CEP classification

    CG - Electrochemistry

  • OECD FORD branch

Result continuities

  • Project

    <a href="/en/project/GA104%2F02%2F0664" target="_blank" >GA104/02/0664: Platinum modified conductiong polymers as an alternative anode material for the low temperature fuel cells</a><br>

  • Continuities

    P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Others

  • Publication year

    2005

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů