Protic plastic crystal/PVDF composite membranes for Proton Exchange Membrane Fuel Cells under non-humidified conditions

Composite membranes based on the protic plastic crystal N,N-dimethylethylenediammonium triflate [DMEDAH][TFO] and poly(vinylidene fluoride) (PVDF) nanofibers have been developed for proton exchange membrane fuel cells (PEMFCs) under non-humidified conditions. The effect of addition of 5mol% triflic...

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Bibliographic Details
Published in:Electrochimica acta 2017-09, Vol.247, p.970-976
Main Authors: Díaz, M., Ortiz, A., Pringle, J.M., Wang, X., Vijayaraghavan, R., MacFarlane, D.R., Forsyth, M., Ortiz, I.
Format: Article
Language:English
Subjects:
Anhydrous
Crystals
Electrolytes
Electrolytic cells
Fuel cells
Heat transfer
Humidification
Humidity
Ion currents
Membrane electrolyte
Nanofibers
PEM Fuel Cell
Plastics
Polymer matrix composites
Polyvinylidene fluorides
Protic Plastic Crystal
Proton exchange membrane fuel cells
Studies
Triflic acid
Vinylidene fluoride
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Summary:Composite membranes based on the protic plastic crystal N,N-dimethylethylenediammonium triflate [DMEDAH][TFO] and poly(vinylidene fluoride) (PVDF) nanofibers have been developed for proton exchange membrane fuel cells (PEMFCs) under non-humidified conditions. The effect of addition of 5mol% triflic acid or 5mol% of the base N,N-dimethylethylenediamine on the thermal and transport properties of the material is discussed. The acid-doped plastic crystal reports more than double the ionic conductivity of the pure plastic crystal. The effects of doping the plastic crystal and the composites, with acid or base, on the ionic conductivity and fuel cell performance are reported. Composite membranes based on PVDF nanofibers and [DMEDAH][TFO] were tested in a single PEMFC. The results show the potential of these composite membranes to be used as electrolytes in this electrochemical application without external humidification.
ISSN:0013-4686
1873-3859
DOI:10.1016/j.electacta.2017.07.076