| 초록 |
Sulfonated poly(arylene ether sulfone) (SPAES) is one of the strong candidates for proton exchange memprane replacing expensive perfluorosulfonated ionomers in polymer electrolyte membrane fuel cells (PEMFCs). However, sulfonated hydrocarbon membranes usually suffer from crucial deterioration because reactive oxygen species (ROSs) can attack the polymer chain. Therefore, hindered amine grafted graphene oxide (HA-GO) which has antioxidant properties was prepared to be used as a filler of SPAES membrane. The SPAES/HA-GO composite membrane had improved proton conductivity, mechanical strength, chemical stability and thermal stability in comparison to pristine SPAES membrane. Especially, the composite membrane showed excellent improvement of chemical stability based on the result of Fenton’s test. |
