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电化学(中英文) ›› 2009, Vol. 15 ›› Issue (1): 52-55.  doi: 10.61558/2993-074X.1954

• 研究论文 • 上一篇    下一篇

DMFC用质子型离子液体复合隔膜的制备及性能表征

苗睿瑛;李建玲;方勇;王新东;   

  1. 北京科技大学冶金与生态工程学院;
  • 收稿日期:2009-02-28 修回日期:2009-02-28 出版日期:2009-02-28 发布日期:2009-02-28

Preparation of the Protic Ionic Liquid/PVDF-HFP Composite Membranes and its Performance for DMFC

MIAO Rui-ying,LI Jian-ling,FANG Yong,WANG Xin-dong   

  1. (School of Metallurgical and Ecological Engineering,University of Science and Technology Beijing,Beijing 100083,China
  • Received:2009-02-28 Revised:2009-02-28 Published:2009-02-28 Online:2009-02-28

摘要: 由酸碱中和法制得质子型离子液体α-甲基吡啶三氟乙酸盐,再经相转化将质子型离子液体与PVDF-HFP复合成(PIL)/PVDF-HFP膜.交流阻抗测试表明,复合膜电导率随温度增加而递增,室温电导率:8×10-3S/cm,30℃电导率:1×10-2S/cm,80℃电导率:3×10-2S/cm.用计时电流法研究复合前后膜的甲醇渗透性能,结果显示,该离子液体复合前、后膜的阻醇性能无明显变化,但复合膜阻醇性能略优.

关键词: DMFC, 质子型离子液体, PVDF-HFP, 电导率, 阻醇性能

Abstract: 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.

Key words: DMFC, protic ionic liquid, PVDF-HFP, conductivity, methanol-resistance

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