Synthesis, characterization and performance study of phosphosilicate gel-sulfonated poly (ether ether ketone) nanocomposite membrane for fuel cell application

摘要

Phosphosilicate gel – SPEEK (Sulfonated Poly Ether Ether Ketone) hybrid nanocompositeudmembranes are proposed for performance enhancement of polymer electrolyteudfuel cell. The nanocomposite membranes are synthesized and characterized at 60udweight percent of inorganic loading. Phosphosilicate gel particles of varying size (subudmicro to nanometer) are synthesized using sol gel approach followed by grinding usingudplanetary ball mill for different time. Transmission Electron Microscopy (TEM) revealsudless than 10 nm particle size for 20 hr grinding. Nanocomposite membrane havingudinorganic particles of size less than 10 nm exhibits higher values of proton conductivity,udion exchange capacity and water uptake compared to composite membrane comprisingudof larger (400 nm and above) inorganic particles. The membrane is assembled with theudelectrode in the unit cell and the polarization characteristics are measured at differentudoperating temperatures. Performance study reveals that between 65 to 75 oC the membraneudoffers best performance in terms of peek power generation and of allowable loadudcurrent. For the same conditions 40% nano-enhancement of peek power generation isudachieved by reducing the average gel particle size from sub micro to less than 10 nm. Atudmedium temperature (between 65 to 75oC) the nanocomposite membrane offers moreudthan 75% enhancement of peek power generation compared to that generated by SPEEKudmembrane.When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/20738