Effect of Surfactant on the Preparation of PTFE-reinforced Composite Electrolyte Membrane for PEMFC
발표자
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초록
내용
PTFE-reinforced composite electrolyte membrane are prepared by impregnation of porous poly(tetrafluoroethylene) (PTFE) membrane with Nafion solution. It is important that PTFE-reinforced composite electrolyte membrane is inexpensive and higher mechanical properties than ionomer membrane. However, repulsion between hydrophobicity of PTFE membrane and hydrophilicity of Nafion solution causes the problem of impregnation and fuel cell performance. Since the surfactant contains both hydrophobic and hydrophilic group, It is expected that dispersion solution of the ionomer on PTFE membrane can be improved. To ensure complete impregnation of PTFE, surfactants such as Triton® X-100 (Polyethylene glycol tert-octylphenyl ether) or IGEPAL® CO-630 (Polyoxyethylene glycol nonylphenyl ether) may mixed with Nafion solution.