A new kind of partially fluorinated poly(fluorenyl ether oxadiazole)membrane was

ten-fluoro-oxadiazole polymer and bisphenol fluorene as monomers

synthesized.Sodium 4-hydroxyben-zenesulfonate was added to attack ortho C-F bond

bringing in the sulfonic acid group

to actualize functionality.The physical and electrochemical properties of membrane had been studied.Moreover

single cell had assembly.The results show that:the membrane had a higher ionic conductivity

stronger mechanical properties and lower methanol permeability.At 30 and 70℃

it reaches 58 mS·cm-1 and 137 mS·cm-1 respectively.Methanol permeability of the membranes were half of the Nafion® 117 membrane.The power density of the single cell reached 85 mW · cm-2.