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Issue 42, 2013
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Nafion/benzotriazole functionalized montmorillonite nanocomposites: novel high-performance proton exchange membranes

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Abstract

Here we describe preparation and characterization of novel ion exchange polymer nanocomposites for fuel cells applications. Montmorillonite (MMT) nanoclay is modified using amino benzotriazole (BTA) via ion exchange reaction. X-ray diffraction patterns confirmed modification of MMT. This BTA-MMT was then used to produce Nafion based nanocomposite membranes with exfoliated microstructures at different loading weights. Transport property (proton conductivity and methanol permeability) results revealed that incorporation of BTA-modified MMT into Nafion® results in significantly reduced methanol crossover while maintaining proton conductivity. Direct methanol single fuel cell tests confirmed a cell efficiency of 21% for Nafion/BTA-MMT-3 wt% compared to 13.72% for conventional Nafion117 membrane at 5 M methanol feed, and also a higher power density of 144 mW cm−2 in comparison with 39 mW cm−2 for Nafion 117. Owing to these features, prepared Nafion/BTA-MMT membranes can be considered as promising polymeric electrolytes for fuel cell applications.

Graphical abstract: Nafion/benzotriazole functionalized montmorillonite nanocomposites: novel high-performance proton exchange membranes

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Article information


Submitted
01 May 2013
Accepted
08 Aug 2013
First published
09 Aug 2013

RSC Adv., 2013,3, 19357-19365
Article type
Paper

Nafion/benzotriazole functionalized montmorillonite nanocomposites: novel high-performance proton exchange membranes

M. M. Hasani-Sadrabadi, S. R. Ghaffarian and P. Renaud, RSC Adv., 2013, 3, 19357
DOI: 10.1039/C3RA42142B

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