شماره ركورد كنفرانس :
4518
عنوان مقاله :
Effect of sulfonation degree on the chemical and thermal stability of sulfonated polyether ether ketone (sPEEK) membranes for fuel cell applications
Author/Authors :
Gh. R Amirkhanlou School of Chemical Engineering - Iran University of Science and Technology, Tehran , S Rowshanzamir School of Chemical Engineering - Iran University of Science and Technology, Tehran , S. J Peighambardoust Chemical Engineering Department - School of Chemistry - University of Tabriz , T Mohammadi School of Chemical Engineering - Iran University of Science and Technology, Tehran
كليدواژه :
Fuel cell , sPEEK , degree of sulfonation , thermal stability , chemical stability
عنوان كنفرانس :
The 7th International Chemical Engineering Congress & Exhibition (IChEC 2011
چكيده لاتين :
Sulfonated polyether ether ketone (sPEEK) membranes are a group of candidated promising
materials for the commercialization of proton exchange membrane fuel cells (PEMFCs). These
membranes possess the good mechanical properties, thermal and chemical stability, toughness and
some conductivity, depending on degree of sulfonation (DS). The degree of sulfonation (DS) is a
key factor in the desirable properties of the proton exchange membranes in PEM fuel cells. One of
the predominant failure modes of PEM fuel cells is the way of degradation in the PEM. In this
study, thermal and chemical degradation behavior of sPEEK membranes in various degrees of
sulfonation were investigated. The thermogravimetric analysis (TGA) showed that the membrane
failure increase with DS in sPEEK membranes as a result of decrease in thermal stability.
Moreover, the chemical stability test showed that there is a direct relation between the increase of
DS in sPEEK membrans and the decrease of chemical stability.
