Nafionová membrána modifikovaná poly(3,4-ethylenedioxythiophenem) pro použití v přímém metanolovém palivovém článku

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F06%3A00017534" target="_blank" >RIV/60461373:22310/06:00017534 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Poly(3,4-ethylenedioxythiophene)-modified nafion membrane for direct methanol fuel cells

Popis výsledku v původním jazyce

Nafion(R) 117 membranes are modified with poly(3,4-ethylenedioxythiophene) (PEDT) by chemical polymerization of EDT with H2O2 or FeCl3 as oxidants in a two compartment cell. Depending on the oxidant and polymerization conditions, PEDT is deposited eitheras thin film on the membrane surface or inside the Nafion membrane depending on whether FeCl3 or H2O2 is used as the oxidant. The decrease in the ionic conductivity and methanol permeability is studied as a function of the polymerization time. A lineardependence is found with H2O2 and a t-1/2 dependence, with FeCl3. The contributions of PEDT and Nafion to the overall conductivity of the composite membranes are separated by impedance measurements. The modified membranes (FeCl3) are also tested in direct methanol fuel cells DMFC. The methanol permeation through the membranes is measured by operating the fuel cell in an electrolysis mode. The influence of the modified membranes on the DMFC current-voltage characteristics is studied with

Název v anglickém jazyce

Poly(3,4-ethylenedioxythiophene)-modified nafion membrane for direct methanol fuel cells

Popis výsledku anglicky

Nafion(R) 117 membranes are modified with poly(3,4-ethylenedioxythiophene) (PEDT) by chemical polymerization of EDT with H2O2 or FeCl3 as oxidants in a two compartment cell. Depending on the oxidant and polymerization conditions, PEDT is deposited eitheras thin film on the membrane surface or inside the Nafion membrane depending on whether FeCl3 or H2O2 is used as the oxidant. The decrease in the ionic conductivity and methanol permeability is studied as a function of the polymerization time. A lineardependence is found with H2O2 and a t-1/2 dependence, with FeCl3. The contributions of PEDT and Nafion to the overall conductivity of the composite membranes are separated by impedance measurements. The modified membranes (FeCl3) are also tested in direct methanol fuel cells DMFC. The methanol permeation through the membranes is measured by operating the fuel cell in an electrolysis mode. The influence of the modified membranes on the DMFC current-voltage characteristics is studied with

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CG - Elektrochemie

OECD FORD obor

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Projekt

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Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2006

Kód důvěrnosti údajů

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

Název periodika

Russian Journal uf Electrochemistry

ISSN

1023-1935

e-ISSN

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Svazek periodika

42

Číslo periodika v rámci svazku

11

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

8

Strana od-do

1193-1201

Kód UT WoS článku

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EID výsledku v databázi Scopus

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