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| Description
| - This paper compares properties of polypyrrole (PPy) and polyaniline (PAni) with respect to theirs application in the fuel cell development. The attention focuses mainly on the synthesis and properties of the membrane - conducting polymer (CP) composite as a base of Membrane Electrode Assembly. In the first step the kinetics of PPy and PAni film formation has been followed. The results obtained indicate that the rate determining step is represented by the monomer transport through the CPs films formed on the membrane surface. Similarly to the monomers, the CP film present on the membrane surface deteriorates methanol permeation through the composite seriously. Permeability obtained for PPy and PAni do not differ substantially and they are lower by approximately two orders of magnitude when compared to the pure Nafion# membrane. From the point of view of possible future application time stability of composites is of a great interest. An attempt was made to compare stability of the electrochemical activi
- This paper compares properties of polypyrrole (PPy) and polyaniline (PAni) with respect to theirs application in the fuel cell development. The attention focuses mainly on the synthesis and properties of the membrane - conducting polymer (CP) composite as a base of Membrane Electrode Assembly. In the first step the kinetics of PPy and PAni film formation has been followed. The results obtained indicate that the rate determining step is represented by the monomer transport through the CPs films formed on the membrane surface. Similarly to the monomers, the CP film present on the membrane surface deteriorates methanol permeation through the composite seriously. Permeability obtained for PPy and PAni do not differ substantially and they are lower by approximately two orders of magnitude when compared to the pure Nafion# membrane. From the point of view of possible future application time stability of composites is of a great interest. An attempt was made to compare stability of the electrochemical activi (en)
- Cílem této práce je porovnat vlastnosti polypyrrolu (PPy) a polyanilinu (PAni) s ohledem na jejich možné využití v nízkoteplotních palivových článcích. Důraz je kladen především na syntézu a vlastnosti kompozitu membrána/vodivý polymer (CP). V prvním kroku byla sledována kinetika vzniku PPy a PAni. Ze získaných výsledků vyplývá, že krok určující rychlost polymerace je transport monomeru CP filmem vznikajícím na povrchu membrány. CP film představuje rovněž beriéru pro propustnost pro methanol. Z provedených experimentů vyplynulo, že permeabilita kompozitu membrána/CP pro methanol je přibližně o dva řády nižší ve srovnání se samotnou membránou Nafion. Dalším důležitým parametrem vzhledem k možnému použití v palivových článcích je stabilita elektrochemické aktivity připravených kompozitů. V souladu s našimi předpoklady bylo zjištěno, že PAni vykazuje vyšší stabilitu. Velmi překvapivý byl rychlý pokles aktivity PPy. (cs)
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| Title
| - Poster: Polypyrrol vs. Polyanilin jako nosič katalyzátoru v palivových článcích typu PEM. (cs)
- Poster: Polypyrrole vs. polyanilin as the catalyst support materials in the PEM type fuel cells.
- Poster: Polypyrrole vs. polyanilin as the catalyst support materials in the PEM type fuel cells. (en)
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| skos:prefLabel
| - Poster: Polypyrrol vs. Polyanilin jako nosič katalyzátoru v palivových článcích typu PEM. (cs)
- Poster: Polypyrrole vs. polyanilin as the catalyst support materials in the PEM type fuel cells.
- Poster: Polypyrrole vs. polyanilin as the catalyst support materials in the PEM type fuel cells. (en)
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| skos:notation
| - RIV/60461373:22310/05:00014104!RIV06-MSM-22310___
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| http://linked.open...avai/riv/aktivita
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| http://linked.open...avai/riv/aktivity
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| http://linked.open...vai/riv/dodaniDat
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| http://linked.open...aciTvurceVysledku
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| http://linked.open.../riv/druhVysledku
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| http://linked.open...iv/duvernostUdaju
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| http://linked.open...titaPredkladatele
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| http://linked.open...dnocenehoVysledku
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| http://linked.open...ai/riv/idVysledku
| - RIV/60461373:22310/05:00014104
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| http://linked.open...riv/jazykVysledku
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| http://linked.open.../riv/klicovaSlova
| - elektrochemická aktivita; kinetika, permeabilita; Nafion, polypyrrol; polyanilin (en)
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| http://linked.open.../riv/klicoveSlovo
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| http://linked.open...ontrolniKodProRIV
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| http://linked.open...in/vavai/riv/obor
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| http://linked.open...ichTvurcuVysledku
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| http://linked.open...cetTvurcuVysledku
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| http://linked.open...UplatneniVysledku
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| http://linked.open...iv/tvurceVysledku
| - Bouzek, Karel
- Moravcová, Sabina
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| http://linked.open...n/vavai/riv/zamer
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| http://localhost/t...ganizacniJednotka
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