Electrospun Poly(Ether Sulfone) Membranes Impregnated with Nafion for High-Temperature Polymer Electrolyte Membrane Fuel Cells Lee, Hong Yeon; Hwang, Hyung Kwon; Lee, Jin Goo; Jeon, Yukwon; Park, Dae-Hwan; Kim, Jong Hak; Shul, Yong-Gun;
Electrospun poly(ether sulfone) (PES) membrane impregnated with Nafion (PES-N) have been developed for high-temperature polymer-electrolyte membrane fuel cell (HT-PEMFC). The PES-N obtains highly thermal stability up to , which is higher than that of the commercial Nafion 212. The PES-N membrane shows a good proton conductivity of about in a temperature range from to . The membrane-electrode assembly (MEA) with the PES-N membrane exhibits a current density of at , and at when the applied voltage is 0.6 V, whereas the MEA with the Nafion 212 membrane shows the current density of at . The results suggest that the PES-N can be a good candidate for a polymer electrolyte membrane of the HT-PEMFC.
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