摘要
采用膜扩散法,由示差折光仪在线测试了聚丙烯酰胺(PAAM)固体凝胶膜室温下甲醇透过系数。实验结果表明,随凝胶浓度的增加,PAAM固体凝胶膜的甲醇透过系数呈下降趋势;但在凝胶浓度一定的情况下,随凝胶中交链度的增加,PAAM固体凝胶膜的甲醇透过系数出现极小值。因此,PAAM固体凝胶膜在掺杂导电成分后可于直接甲醇燃料电池(DMFC)中作为阻醇电解质膜使用。
*' Through the method of membrane diffusion,the methanol permeability in polyacrylamide (PAAM) solid gel membranes was tested in situ with the differential refractive detector.The experimental results showed that with the increase of PAAM concentration in PAAM solid gel membranes,the methanol permeability in PAAM solid gel membranes had a obvious decrease,and with the increase of crosslinking degree in PAAM solid gel membranes in the case of the fixed PAAM concentration,the methanol permeability in PAAM solid gel membranes brought the minimum into existence.Accordingly,PAAM solid gel membranes can be used as methanol impermeable electrolyte membranes in direct methanol fuel cell (DMFC) after doped electric conducting components.
出处
《化工科技》
CAS
2003年第2期15-18,共4页
Science & Technology in Chemical Industry
基金
天津市自然科学基金资助项目(013616811)。
