Ionic Transport and Water Vapor Uptake of Ammonium Exchanged Perfluorosulfonic Acid Membranes
| Contribuinte(s) |
UNIVERSIDADE DE SÃO PAULO |
|---|---|
| Data(s) |
10/10/2013
10/10/2013
2012
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| Resumo |
Nafion membranes series N117 doped with ammonium, at different cation fractions (H+/NH4+), were investigated for ionic transport and water vapor uptake, for several water activities and temperatures. Ammonium cations change both properties of the polymer in a similar manner. Membrane ionic conductivity and water vapor uptake (lambda) decrease as the ammonium concentration increases in the polymer. Ionic transport activation energies are calculated and the transport mechanism of ammonium ions in Nafion is discussed. (C) 2012 The Electrochemical Society. [DOI: 10.1149/2.040203jes] All rights reserved. U.S. Department of Energy, Office of Energy U.S. Department of Energy, Office of Energy government agency CAPES government agency CAPES [1151-08-8] |
| Identificador |
JOURNAL OF THE ELECTROCHEMICAL SOCIETY, PENNINGTON, v. 159, n. 3, pp. B265-B269, FEB, 2012 0013-4651 http://www.producao.usp.br/handle/BDPI/34119 10.1149/2.040203jes |
| Idioma(s) |
eng |
| Publicador |
ELECTROCHEMICAL SOC INC PENNINGTON |
| Relação |
JOURNAL OF THE ELECTROCHEMICAL SOCIETY |
| Direitos |
restrictedAccess Copyright ELECTROCHEMICAL SOC INC |
| Palavras-Chave | #ELECTROLYTE FUEL-CELLS #IONOMER MEMBRANES #NAFION MEMBRANES #POLYMER #PROTON #PERFORMANCE #IMPURITY #CATIONS #H+ #CONDUCTIVITY #ELECTROCHEMISTRY #MATERIALS SCIENCE, COATINGS & FILMS |
| Tipo |
article original article publishedVersion |
