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 nanocomposite membranesudare proposed for performance enhancement of polymer electrolyte fuel cell. The nanocomposite membranesudare synthesized and characterized at 50 and 60 weight percent of inorganic loading. Phosphosilicate gel particlesudof varying size (sub micro to nanometer) are synthesized using sol gel approach followed by grinding usingudplanetary ball mill for different time. Transmission Electron Microscopy (TEM) reveals less than 10 nmudparticle size for 20 hr grinding. Nano composite membrane having inorganic particles of size less than 10 nmudexhibits higher values of proton conductivity, ion exchange capacity and water uptake compared to compositeudmembrane comprising of larger (400 nm and above) inorganic particles. The membrane is assembled with theudelectrode in the unit cell and the polarization characteristics are measured at different operating temperatures.udPerformance study reveals that between 70 to 80 C the membrane offers best performance in terms ofudpeak power generation and of allowable load current. For the same conditions 40-50 % nano-enhancement ofudpeak power generation is achieved by reducing the average gel particle size from sub micro to less thanud10 nm. At medium temperature (between 70 to 80 C) the nanocomposite membrane offers more than 100 enhancementudof peak power generation compared to that generated by SPEEK membrane.When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/24916