会议专题

The influence on proton conductivity and methanol permeability of SiO2/PVA-PAMPS composite Membrane

  Polyvinyl alcohol(PVA) modified by SiO2/poly 2-acrylamido 2-methylpropane sulfonic acid (PAMPS) electrolyte membrane (SiO2/PVA-PAMPS) was prepared by a Sol-gel synthesis in situ technique for DMFC.The influence of the different ratio of AMPS and SiCl4 on the proton conductivity and methanol permeability of these membranes was studied using an impedance analyzer and a gas chromatograph.The results showed that with increasing of the content of silicon dioxide,the SiO2 was homogeneously distributed in the membrane.As the AMPS content increased,the proton conductivity of the SiO2/PVA-PAMPS membranes also increased.The swelling degree of the SiO2/PVA-PAMPS membrane with 30wt% SiCh and 20wt% AMPS was 28.79% at 25℃.The membranes possess a methanol permeability of around 10-7 cm2·S-1,which is about one order of magnitude lower than that of Nafion115.These membranes have high selectivity and are promising for use in direct methanol fuel cells (DMFC).

proton exchange membrane 2-acrylamido 2-methylpropane sulfonic acid (AMPS) In-situ Sol-Gel Synthesis polyvinyl alcohol(PVA)

Chunhua Yuan Guibao Guo Shengli An

School of Chemistry and Chemistry Engineering,Inner Mongolia University of Science & Technology,Baot School of Materials and Metallurgy,Inner Mongolia University of Science & Technology,Baotou 014010,C

国际会议

the 2012 2nd International Conference on Frontiers of Manufacturing Science and Measuring Technology (第二届制造科学与检测技术国际会议(ICFMM 2012))

西安

英文

625-628

2012-06-12(万方平台首次上网日期,不代表论文的发表时间)