| 초록 |
This study is for making new alternative electrolyte composite membrane by adding synthesis materials to hydrocarbon polymer to slove the high cost of perfluorinated polymer that we use for PEMFC membrane now. We chose cerium oxide doped gadolinium (GDC) as synthesis materials. Cerium oxide (Ceria)is currently studied as materials of electrolyte membrane so we focused on comparing performance, properties, and stability of GDC/SPEEK composite membrane with cerium oxide/SPEEK composite membrane. Experiment was based on 1wt% of materials as it appeared that 1wt% was like dispersed well. Results showed water uptake, swelling and ion exchange capacity, proton conductivity of composite membranes were better than pristine SPEEK membrane, as well physical/chemical stability. Especially, GDC/SPEEK composite membrane has better proton conductivity at low RH, ion exchange capacity, chemical stability at high temperature than Ceria/SPEEK composite membrane. |
