中文摘要：

微型直接甲醇燃料电池（micro direct methanol fuel cell,μ-DMFC）具有发电效率高、环境污染少、安全、携带方便等优点,在小型民用电源和单兵携带电源上具有广泛的应用.讨论了微型直接甲醇燃料电池（micro direct methanol fuelcell,μ-DMFC）的特点,研究了运用微机电系统（micro-electro-mechanical systems,MEMS）工艺,设计并且制作μ-DMFC的过程.主要是运用MEMS工艺制作μ-DMFC的流场板;制备膜电极（membrane electrode assembly,MEA）;通过改进μ-DMFC的封装结构,采用聚二甲基硅氧烷（polydimethylsiloxane,PDMS）和金属夹具对μ-DMFC进行封装,有效地避免甲醇的渗漏;并且通过测试μ-DMFC的I-V特性,比较了不同封装结构下,μ-DMFC的电性能.实验结果表明,封装结构改进后的μ-DMFC,最大电流密度为14.82mA/cm2,最大输出功率为0.661mW.

英文摘要：

Micro direct methanol fuel cell（μ-DMFC）with the virtue of high power efficiency,few-environmental pollution,safety and portable has a great prospect of application in small civilian power and individual portable power.The characteristic of μ-DMFC（micro direct methanol fuel cell） is discussed.Then,with the process of micro-electro-mechanical systems（MEMS）,the process that the μ-DMFC is designed and fabricated is researched.Firstly,the flow-field plate of μ-DMFC is fabricated by process of MEMS.Secondly,the membrane electrode assembly（MEA） is prepared.Then,the package structure of μ-DMFC is improved,the polydimethylsiloxanef（PDMS） and metal fixture are adopted to package the μ-DMFC,which avoids leakage of methanol effectively.Finally,the IV property of μ-DMFC is tested.The electrical property of μ-DMFC is compared on the different structure of package.The result shows that on the μ-DMFC of improved package structure,the maximum current density is 14.82 mA/cm2,and the maximum output power is 0.661 mW.