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Issue 24, 2015
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Ammonia-assisted dehydrofluorination between PVDF and Nafion for highly selective and low-cost proton exchange membranes: a possible way to further strengthen the commercialization of Nafion

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Abstract

For the first time, dehydrofluorination reaction was detected between PVDF and Nafion in the presence of ammonia. Cross-linked networks were hence formed in the ammonia-modified Nafion + PVDF composite proton exchange membrane (PEM). They significantly enhanced the fuel resistance, thermal and mechanical stabilities, as well as the structural maintenance of the composite PEM. Meanwhile, at 80 °C, a slight increase in the proton conductivity of the composite PEM was also observed due to its improved water retention capability and the newly formed oxygen-containing functional groups. More importantly, such a highly selective Nafion-based PEM may have strong cost competitiveness in the market of commercial PEMs by virtue of the extremely low cost of PVDF (a dosage of up to 30–50 wt%) and ammonia.

Graphical abstract: Ammonia-assisted dehydrofluorination between PVDF and Nafion for highly selective and low-cost proton exchange membranes: a possible way to further strengthen the commercialization of Nafion

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Publication details

The article was received on 20 Apr 2015, accepted on 14 May 2015 and first published on 14 May 2015


Article type: Communication
DOI: 10.1039/C5TA02855H
J. Mater. Chem. A, 2015,3, 12609-12615

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    Ammonia-assisted dehydrofluorination between PVDF and Nafion for highly selective and low-cost proton exchange membranes: a possible way to further strengthen the commercialization of Nafion

    K. Feng, B. Tang and P. Wu, J. Mater. Chem. A, 2015, 3, 12609
    DOI: 10.1039/C5TA02855H

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