The development of proton conducting polymer membranes for fuel cells using sulfonated carbon nanofibres

This study describes a new strategy to improve the performance of PEMFCs by the addition of S/CNF. The presence of 2.08 vol.-% S/CNF increased the proton conductivity of a S/EPDM by one order of magnitude, which made it comparable to that of Nation((R)) 117, and without creating an electronic path. Furthermore, the filled membranes showed improved thermal stability and mechanical properties