| 초록 |
Polymer electrolyte membranes based on sulfonated graphene oxide (sGO) / sulfonated poly(arylene ether sulfone) (sPAES) were fabricated for the unitized regenerative fuel cells (URFCs). Due to the incorporation of sGO, the number of sulfuric acid functional groups (-SO3H) in the membrane were increased, which led to high ionic conductivity of the polymer electrolyte membrane. However, the proton conductivity of the membrane decreased with the deterioration of sGO dispersion state in the membrane. Therefore, the effect of sGO dispersion on the proton conductivity was intensively investigated in this study. Additionally, the performance of URFC using a sGO/sPAES membrane was confirmed in the unit cell test fixture. |
