A. Mahreni, Mahreni and Mohamad, A.B. and Kadhum, A.A.H. and Daud, W.R.W and Iyuke, S.E. (2009) Nafion / Silicon oxide / phosphotungstic acid nanocomposite membrane with enhanced proton conductivity. Journal of Membrane Science, 327 (1-2). pp. 32-40. ISSN doi:10.1016/j.memsci.2008.10.048
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Abstract
a b s t r a c t
Nafion-silicon oxide (SiO2)-phosphotungstic acid (PWA) composite membrane has been synthesized to
improve Nafion based proton exchange membrane fuel cell (PEMFC) performance. The objective of the
study is to fabricate Nafion-SiO2-PWA nanocomposite membrane using sol–gel reaction. The composite
is composed of the mixture of Nafion solution, tetra ethoxy orthosilane (TEOS) and PWA solution. The
mixed solution was casted at certain temperature until transparent membrane is obtained. Peaks of SiO2
and PWA in the infrared spectra revealed that both inorganic and organic components are present in the
modified Nafion based nanocomposite membrane. Analysis with fuel cell test station showed that higher
current density was produced by nanocomposite membrane (82mAcm−2 at 0.6V for NS15W) than with
the Nafion membrane (30mAcm−2 at 0.2 V) at 90 ◦C and 40% relative humidity. The internal resistance
was seen to increase with the inorganic content. The internal resistances of the commercial Nafion (N112),
NS10W, NS15W and NS20W are 6.33, 4.84, 1.33 and 3.6�cm2, respectively and their Tafel constants are
93.4, 84.4, 11.25 and 26.6 mV, respectively. While the nanocomposite membrane results were shown to
be better than the commercial Nafion, the overall performances are comparable to those in the open
literature.
© 2008 Elsevier B.V. All rights reserved
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Proton exchange membrane PEMFC Nafion Nanocomposite Performance |
| Subjek: | T Technology > TP Chemical technology |
| Divisions: | x. Faculty of Engineering, Science and Mathematics > School of Chemistry |
| Depositing User: | Dr Mahreni Mahreni |
| Date Deposited: | 23 Apr 2019 02:18 |
| Last Modified: | 23 Apr 2019 02:18 |
| URI: | http://eprints.upnyk.ac.id/id/eprint/19425 |
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