Modification of Nafion Membranes by IL-Cation Exchange : Chemical Surface, Electrical and Interfacial Study
Joint Authors
Martínez de Yuso, M. V.
Benavente, J.
Rodríguez-Castellón, Enrique
Arango, A.
Romero, V.
Source
International Journal of Electrochemistry
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-03-25
Country of Publication
Egypt
No. of Pages
9
Main Subjects
Abstract EN
Bulk and surface changes in two proton-exchange membranes (Nafion-112 and Nafion-117) as a result of the incorporation of the IL-cation n-dodecyltriethylammonium (or DTA+) by a proton/cation exchange mechanism after immersion in a DTA+ aqueous solution were analysed by impedance spectroscopy (IS), differential scanning calorimetry (DSC), X-ray photoelectron spectroscopy (XPS), and contact angle measurements performed with dry samples of the original Nafion and Nafion-DTA+-modified membranes.
Only slight differences were obtained in the incorporation degree and surface chemical nature depending on the membrane thickness, and DTA+ incorporation modified both the hydrophobic character of the original Nafion membranes and their thermal stability.
Electrical characterization of the dry Nafion-112 membrane was performed by impedance spectroscopy while different HCl solutions were used for membrane potential measurements.
A study of time evolution of the impedance curves measured in the system “IL aqueous solution/Nafion-112 membrane/IL aqueous solution” was also performed.
This study allows us monitoring the electrical changes associated to the IL-cation incorporation in both the membrane and the membrane/IL solution interface, and it provides supplementary information on the characteristic of the Nafion/DTA+ hybrid material.
Moreover, the results also show the significant effect of water on the electrical resistance of the Nafion-112/IL-cation-modified membrane.
American Psychological Association (APA)
Romero, V.& Martínez de Yuso, M. V.& Arango, A.& Rodríguez-Castellón, Enrique& Benavente, J.. 2012. Modification of Nafion Membranes by IL-Cation Exchange : Chemical Surface, Electrical and Interfacial Study. International Journal of Electrochemistry،Vol. 2012, no. 2012, pp.1-9.
https://search.emarefa.net/detail/BIM-464835
Modern Language Association (MLA)
Romero, V.…[et al.]. Modification of Nafion Membranes by IL-Cation Exchange : Chemical Surface, Electrical and Interfacial Study. International Journal of Electrochemistry No. 2012 (2012), pp.1-9.
https://search.emarefa.net/detail/BIM-464835
American Medical Association (AMA)
Romero, V.& Martínez de Yuso, M. V.& Arango, A.& Rodríguez-Castellón, Enrique& Benavente, J.. Modification of Nafion Membranes by IL-Cation Exchange : Chemical Surface, Electrical and Interfacial Study. International Journal of Electrochemistry. 2012. Vol. 2012, no. 2012, pp.1-9.
https://search.emarefa.net/detail/BIM-464835
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-464835