Permeability and morphology of polypyrrole films synthesized with various nucleophiles

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F03%3A00008008" target="_blank" >RIV/60461373:22310/03:00008008 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
čeština
Original language name
Permeability and morphology of polypyrrole films synthesized with various nucleophiles
Original language description
Polypyrrole represents one of the promising materials for preparation of composite electrodes in PEMFC. This work deals with the influence of the nature of the nucleophile incorporated into the PPy film on its morphology and hydrogen/proton permeability.Sulphate, Chloride, Polystyrene sulphonate (PSS) and Nafion 117 were used as the nucleophiles. Scanning electron microscope (SEM) was used to study PPy films morphology and impact of nucleophile nature on it. Also dependence of film thickness on charge passed was determined from SEM pictures. The PPy permeability for hydrogen/proton was determined using a limiting current technique. It is based on the division of the total current density on rotating disc electrode (RDE). As it was observed the nucleophile nature has an important effect on the electrochemically synthesised film morphology. Small nucleophiles as sulphate or chloride provide film with very rough surface. Especially chloride ions form typical "Cauliflower like" structure,
Czech name
Permeability and morphology of polypyrrole films synthesized with various nucleophiles
Czech description
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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)

Publication year
2003
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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