The protic ionic liquid(PIL) α-methyl pyridinium trifluoroacetate([α-MPyH]Tfa) was synthesized by acid & alkali neutralization.Then PIL/PVDF-HFP composite membranes were prepared by means of phase inversion method using acetone as solvent.The conductivities of the composite membrane increased with the temperature and reached 8×10-3 S/cm,1×10-2 S/cm and 3×10-2 S/cm at room-temperature,30 ℃ and 80 ℃,respectively,by electrochemical impedance method.The properties of the methanol-rejecting of the membranes were measured by chronoamperometry as well.The results indicate that the properties of methanol-resistance of the membranes before and after IL combination were equivalent approximately.


DMFC, protic ionic liquid, PVDF-HFP, conductivity, methanol-resistance

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[1]Miao Ruiying,Li Jianling,Wang Xindong,et al.PVDF-HFP-based porous polymer electrolyte membranes forlithium-ion batteries[J].Journal of Power Sources,2008,184(2):420-426.
[2]ZHENG HH(郑洪河),Shi L(石磊),Gao S Y(高书燕),et al.An electrochemical behavior of LiMn2O4elec-trode in electrolyte[J].Electrochemistry(in Chinese),2005,11(3):298-303.
[3]Zhao N(赵宁),Dong W J(董文举),Shi Q Z(石起增).Electrochemical reduction behavior of benzaldehydein the ionic liquids[J].Electrochemistry(in Chinese),2006,12(1):80-84.
[4]Yoshizawa M,Wu X,Angell C A.Ionic liquids by pro-ton transfer:vapor pressure,conductivity,and the rele-vance ofΔpKa from aqueous solutions[J].Journal ofAmerican Chemical Society,2003,125(50):15411-15419.
[5]Chen J X(陈建新),Wu H(吴洪).Measurement ofmembrane permeability[J].Chinese Journal of Scien-tific Instrument(in Chinese),2002,23(3):58-59.



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