전기방사를 이용한 SiO_2/nano ionomer 복합 막의 제조 및 고온 PEMFC에의 응용 = Development of the SiO_2/nano Ionomer Composite Membrane for the Application of High Temperature PEMFC

다국어 초록 (Multilingual Abstract)

The SiO_2 membranes for polymer electrolyte membrane fuel cell (PEMFC) are preapared by electrospinning method. It leads to high porosity and surface area of membrane to accommodate the proton conducting materials. The composite membrane was prepared by impregnating of Nafion ionomer into the pores of electrospun SiO_2 membranes. The SiO_2:heteropolyacid (HPA) nano-particles as a inorganic proton conductor were prepared by microemulsion process and the particles are added to the Nafion ionomer. The characterization of the membranes was confirmed by field emission scanning electron microscope (FE-SEM),thermogravimetry analysis (TGA), and single cell performance test for PEMFC. The Nafion impregnated electrospun SiO_2 membrane showed good thermal stability, satisfactory mechanical properties and high proton conductivity. The addition of the SiO_2:HPA nano-particle improved proton conductivity of the composite membrane, which allow further extension for operation temperature in low humidity environments. The composite membrane exhibited a promising properties for the application in high temperature PEMFC.

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