高校化学工程学报2011，Vol.25Issue(5)：864-870,7.
直接甲醇燃料电池溶胶-凝胶流动相的制备与表征
Preparation and Characterization of Sol-Gel Flux Phase in Direct Methanol Fuel Cell
摘要
Abstract
The sol-gel flux phase used in direct methanol fuel cell (DMFC) was prepared by sol-gel method with methyl silicate as the precursor. The discharge performance comparison between the DMFC using sol-gel flux phase and that using liquid flux phase was conducted, the methanol crossover rate through the Nafion117 membrane was determined and the proton conductivity of the sol-gel flux phase was investigated. The results show that the cell performance of DMFC with sol-gel flux phase is a little lower than that of the DMFC with liquid flux phase, and the sol-gel flux phase can be used as the fuel of DMFC. It was found that the methanol diffusion coefficient of the sol-gel flux phase is about 1.46×10-7 cm2·s-1, while the methanol diffusion coefficient of the liquid flux phase is about 1.43×10-6 cm2·s-1; compared with the liquid flux phase, the methanol crossover rate of the sol-gel flux decreases about 90%. The proton conductivity of the sol-gel flux phase is as well as that of the liquid flux phase, and both of them are about 16S mS·cm-1, which means that the sol-gel flux phase has an excellent proton conductivity.关键词
直接甲醇燃料电池/溶胶-凝胶流动相/甲醇渗透/质子电导率Key words
direct methanol fuel cell (DMFC)/ sol-gel flux phase/ methanol crossover/ proton conductivity分类
信息技术与安全科学引用本文复制引用
廖萍,张成进,倪红军..直接甲醇燃料电池溶胶-凝胶流动相的制备与表征[J].高校化学工程学报,2011,25(5):864-870,7.基金项目
江苏省科技支撑计划(工业部分)项目(BE2009090) （工业部分）
江苏省高校自然科学重大基础研究项目(08KJA480001) （08KJA480001）
南通市应用研究计划项目(K2008002,K2009007) （K2008002,K2009007）
南通大学自然科学研究专项(09ZJ002). （09ZJ002）
