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http://dx.doi.org/10.7316/khnes.2011.22.5.569

Development of the SiO2/Nano Ionomer Composite Membrane for the Application of High Temperature PEMFC  

Na, Hee-Soo (Department of Chemical and Biomolecular Engineering, Yonsei University)
Hwang, Hyung-Kwon (Department of Chemical and Biomolecular Engineering, Yonsei University)
Lee, Chan-Min (The Graduate Program in New Energy and Battery Engineering, Yonsei University)
Shul, Yong-Gun (Department of Chemical and Biomolecular Engineering, Yonsei University)
Publication Information
Transactions of the Korean hydrogen and new energy society / v.22, no.5, 2011 , pp. 569-578 More about this Journal
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.
Keywords
PEMFC; Electrospinning; $SiO_2$; Heteropolyacid; Composite membrane; Nano ionomer;
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Times Cited By KSCI : 3  (Citation Analysis)
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