شماره ركورد كنفرانس :
4518
عنوان مقاله :
Synthesis and characterization of new Pt nanocatalysts based on the cesium salt of 12-tungstophosphoric acid as an additive for preparation of self-humidifying nanocomposite membranes in PEM fuel cells
Author/Authors :
S. J Peighambardoust Chemical Engineering Department - Faculty of Chemistry - University of Tabriz , S. Rowshanzamir School of Chemical Engineering - Iran University of Science and Technology, Tehran , M. G Hosseini Electrochemistry Research Laboratory - Physical Chemistry Department - Faculty of Chemistry - University of Tabriz , Gh. R Amirkhanlou Chemical Engineering Department - Faculty of Chemistry - University of Tabriz
كليدواژه :
Proton exchange membrane , (sulfonated poly(ether ether ketone) (sPEEK , nanocatalysts , self-humidifying , PEM fuel cells
عنوان كنفرانس :
The 7th International Chemical Engineering Congress & Exhibition (IChEC 2011
چكيده لاتين :
In the present study, the Cs2.5H0.5PW12O40 supported Pt catalysts (Pt-Cs2.5H0.5PW12O40) have been
synthesized and investigated for preparation of self-humidifying nanocomposite membranes based
on sPEEK in PEM fuel cells. The FTIR, XRD and TEM analysis were conducted to characterize
the catalyst and membrane structure. The water uptake and proton conductivity measurements
indicated that the sPEEK/Pt-Cs2.5 self-humidifying nanocomposite membranes have higher water
absorption and proton-conductive properties compared to the plain sPEEK membrane due to the
highly hygroscopic and acidy properties of Pt-Cs2.5 catalyst. The single cells employing the
sPEEK/Pt-Cs2.5 self-humidifying nanocomposite membranes exhibited higher cell OCV values
and cell performances than those of plain sPEEK membrane under dry or wet conditions. This
self-humidifying nanocomposite membranes have a higher single cell performance than the
Nafion-117 which is frequently used as a proton exchange membrane in fuel cell applications.
