*Central Institute of Plastics Engineering & Technology (CIPET), Guindy, Chennai 600032, India
**CIPET, School for Advanced Research in Polymers (SARP)-APDDRL, Hi Tech Defence and Aerospace Park, Bengaluru 562149, India
***CIPET, School for Advanced Research in Polymers (SARP) - LARPM, B/25, CNI Complex, Patia, Bhubaneswar 751 024, India
The solid electrolyte membrane for a hydrogen-oxygen fuel cell was prepared and investigated from the potential of sulfonated poly(ether ether ketone) (SPEEK) embedded together with montmorillonite (MMT). Acid hydrophilized poly(ether ether ketone) (PEEK) and MMT with varying sulfonation levels of 25-70% prepared through solvent casting were investigated for their performance. The nuclear magnetic resonance (1H NMR) spectra at 7.5ppm affirmed the occurrence of sulfonation reaction, and its degree was studied by both 1H NMR and titration method. The reaction time was varied to achieve sulfonation levels from 25 to 70%. The effect of incorporation of pristine and sulfonated MMT into SPEEK was examined. The membranes, prepared using solvent casting technique, were involved for water uptake over the wide range of temperature, thermal stability, and proton conductivity measurements. The cross-sectional surface arrangement of the membrane and clay dispersion was deliberated using SEM. The proton exchange membrane fuel cell (PEMFC) single cell’s tests revealed that sulfonated PEEK membrane demonstrated service performance comparable to that of Nafion, as validated using MATLAB software.
Keywords: poly(ether ether ketone), fuel cell performance, proton conductivity, sulfonated montmorillonite
2021; 45(1): 101-112
Published online Jan 25, 2021
CIPET, School for Advanced Research in Polymers (SARP)-APDDRL, Hi Tech Defence and Aerospace Park, Bengaluru 562149, India