Transport Properties of Nafion Membranes Modified with Tetrapropylammonium Ions for Direct Methanol Fuel Cell Application Full article
| Journal |
Russian Journal of Electrochemistry
ISSN: 1023-1935 , E-ISSN: 1608-3342 |
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| Output data | Year: 2009, Volume: 45, Number: 2, Pages: 199-207 Pages count : 9 DOI: 10.1134/S1023193509020116 | ||||||
| Tags | Composite membranes, Fuel cells, Methanol permeability, Nafion, Proton conductivity, Quaternary ammonium bases | ||||||
| Authors |
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| Affiliations |
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Funding (3)
| 1 | Russian Foundation for Basic Research | 07-08-91580 |
| 2 | Russian Foundation for Basic Research | 08-08-00660 |
| 3 | Council for Grants of the President of the Russian Federation | МК-907.2007.3 |
Abstract:
This work presents a study of transport properties (proton conductivity, methanol permeability, and water uptake) and acid-base properties of commercial Nafion-112, -115, and -117 membranes modified with tetrapropylammonium (TPA) cations. In the interaction between TPA hydroxide and protons of sulfonate groups in the Nafion matrix, some of the protons are shown to be bound to sulfonate groups and do not participate in transport processes. These findings are confirmed by IR spectroscopy, acid-base titration, and data on proton conductivity of the modified membranes. Proton conductivity of the modified membranes is shown to be effectively described by a percolation model with parameters that agree with published data for commercial Nafion membranes. Based on these results, a model is proposed for the interaction of TPA cations with the sulfonate groups in Nafion membranes. According to this model, TPA cations form hydrophobic clusters in hydrophilic regions of the polymer matrix, thus preventing some of the protonated sulfonate groups from participating in transport processes.
Cite:
Gribov E.N.
, Krivobokov I.M.
, Parkhomchuk E.V.
, Okunev A.G.
, Spoto G.
, Parmon V.N.
Transport Properties of Nafion Membranes Modified with Tetrapropylammonium Ions for Direct Methanol Fuel Cell Application
Russian Journal of Electrochemistry. 2009. V.45. N2. P.199-207. DOI: 10.1134/S1023193509020116 WOS Scopus РИНЦ ANCAN OpenAlex
Transport Properties of Nafion Membranes Modified with Tetrapropylammonium Ions for Direct Methanol Fuel Cell Application
Russian Journal of Electrochemistry. 2009. V.45. N2. P.199-207. DOI: 10.1134/S1023193509020116 WOS Scopus РИНЦ ANCAN OpenAlex
Original:
Грибов Е.Н.
, Кривобоков И.М.
, Пархомчук Е.В.
, Окунев А.Г.
, Спото Д.
, Пармон В.Н.
Транспортные свойства нафионовых мембран, модифицированных ионами тетрапропиламмония, в приложении к топливным элементам прямого окисления метанола
Электрохимия. 2009. Т.45. №2. С.211-220. РИНЦ
Транспортные свойства нафионовых мембран, модифицированных ионами тетрапропиламмония, в приложении к топливным элементам прямого окисления метанола
Электрохимия. 2009. Т.45. №2. С.211-220. РИНЦ
Dates:
| Submitted: | Feb 26, 2008 |
| Published print: | Feb 1, 2009 |
| Published online: | Mar 11, 2009 |
Identifiers:
| Web of science: | WOS:000264105700011 |
| Scopus: | 2-s2.0-62249122439 |
| Elibrary: | 13598692 |
| Chemical Abstracts: | 2009:290380 |
| Chemical Abstracts (print): | 152:101199 |
| OpenAlex: | W1963823382 |