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A Hybrid Membrane of Poly(vinyl alvohol)and Phosphotungstic Acid for Fuel Cells

LI Lei; WANG Yuxin   

  1. Chemical Engineering Research Center, Tianjin University, Tianjin 300072, China
  • Received:1900-01-01 Revised:1900-01-01 Online:2002-10-28 Published:2002-10-28
  • Contact: LI Lei

用于燃料电池的磷钨酸聚乙烯醇杂化膜

李磊; 王宇新   

  1. Chemical Engineering Research Center, Tianjin University, Tianjin 300072, China
  • 通讯作者: 李磊

Abstract: Proton conducting membranes composed of phosphotungstic acid (PWA) and poly(vinyl alcohol)
(PVA)were prepared. Conductivity and Fourier transform infrared spectrometer(FTIR)
measurements show that most ofthe acid embedded are stable in the PVA matrix when the
membrane is immerged in water or methanol solution atroom temperature. Conductivity of the
composite membranes scatters around 10-3 S.cm-1 at room temperature.The methanol crossover
through the membranes is about an order of magnitude lower than that through Nafion117
membrane.

Key words: fuel cell, proton conductor, composite membrane, poly(vinyl alcohol), phosphotungstic acid

摘要: Proton conducting membranes composed of phosphotungstic acid (PWA) and poly(vinyl alcohol)
(PVA)were prepared. Conductivity and Fourier transform infrared spectrometer(FTIR)
measurements show that most ofthe acid embedded are stable in the PVA matrix when the
membrane is immerged in water or methanol solution atroom temperature. Conductivity of the
composite membranes scatters around 10-3 S.cm-1 at room temperature.The methanol crossover
through the membranes is about an order of magnitude lower than that through Nafion117
membrane.

关键词: fuel cell;proton conductor;composite membrane;poly(vinyl alcohol);phosphotungstic acid