Title of article :
Sulfonated poly(arylene thioether phosphine oxide)s copolymers for proton exchange membrane fuel cells
Author/Authors :
Xuhui Ma، نويسنده , , Liping Shen، نويسنده , , Chunjie Zhang، نويسنده , , Guyu Xiao، نويسنده , , Deyue Yan، نويسنده , , Guoming Sun، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2008
Pages :
9
From page :
303
To page :
311
Abstract :
High molecular weight sulfonated poly(arylene thioether phosphine oxide)s (sPATPO) with various sulfonation degrees were prepared directly by aromatic nucleophilic polycondensation of 4,4′-thiobisbenzenethiol with sulfonated bis(4-fluorophenyl) phenyl phosphine oxide and bis(4-fluorophenyl) phenyl phosphine oxide. sPATPO in the acid form with sulfonation degrees of 60–100% exhibits a glass transition temperature higher than 230 °C and a 5% weight loss temperature above 400 °C, indicating high thermal stability. sPATPO with a high sulfonation degree shows high proton conductivity and good resistance to swelling as well. For instance, sPATPO-70 displays the conductivity of 0.0783 S/cm and a swelling ratio of 11.6% at 90 °C. TEM micrographs showed that sPATPO membranes with a high sulfonation degree could form continuous ion channels, which are favorable for improving the proton conductivity but harmful to remaining the mechanical property. The membranes are expected to show good performances in fuel cell applications.
Keywords :
Poly(arylene thioether phosphine oxide)s , Proton exchange membrane , Sulfonate
Journal title :
Journal of Membrane Science
Serial Year :
2008
Journal title :
Journal of Membrane Science
Record number :
1353549
Link To Document :
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