| 초록 |
In polymer electrolyte membrane fuel cell, sulfonated hydrocarbon membranes have been developed to replace perfluorosulfonated membranes. Among them, sulfonated poly(arylene ether sulfone) (SPAES) is a good candidate for proton exchange membrane in terms of cost and proton conductivity. However, the sulfonated hydrocarbon membrane normally suffers from significant deterioration due to reactive oxygen species (ROSs), which can cause scission of polymer chains. Hence, functionalized graphene oxide (GO) having antioxidant property was used to prepare a SPAES composite membrane. The radical scavenging ability was endowed by grafting hindered amine (HA) to GO. The SPAES/HA-GO composite membrane had improved proton conductivity and physicochemical stabilities. Especially, it showed excellent performance in Fenton’s test in comparison to the SPAES pristine membrane. |
