What is it about?

The publication is about the performance of sulfonated polymer with the metal oxide and its stability when it blended with the other polymer. These results gave the solution to perform in the fuel cell as an electrolyte membrane and to find the solution for PEMFC problems.

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Why is it important?

In the current trend to replace the Nafion the alternative polymer membranes should be synthesized. However, the high cost and methanol crossover of Nafion have drastically limited its application. So we prepared alternative polymers with the incorporation of inorganic fillers, and blended based material for PEMFC. We characterized the material and it shows good improvememnt in the conductivity.

Perspectives

New series of polymer nanocomposite membranes were prepared from polysulfone (PSU), sulfonated polyaniline (SPANI) and niobium pentoxide (Nb2O5) by solution casting technique. In order to assess the suitability of the polymer electrolytes in fuel cell applications, the membranes were characterized with respect to their physicochemical properties. Scanning electron microscope, X-ray diffraction, and X-ray photoelectron spectroscopy data confirmed the successful incorporation of nanofillers into the polymer matrix. The membrane loaded with 10 wt% of niobium pentoxide into PSU/SPANI exhibited a proton conductivity of 0.0674 S cm1, whereas the control membrane showed 0.0110 S cm1. The incorporation of niobium pentoxide into pristine polymer not only improved the ionic conductivity but also enhanced the thermal and oxidative stabilities. The substantial results achieved with the organic– inorganic polymer composites derived from PSU-SPANI and Nb2O5 have been established and can be viable materials for electrolyte in fuel cell applications.

M Berlina
SRM University

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This page is a summary of: Novel polysulfone/sulfonated polyaniline/niobium pentoxide polymer blend nanocomposite membranes for fuel cell applications, Journal of Applied Polymer Science, May 2021, Wiley, DOI: 10.1002/app.51207.
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