Abstract: By adopting the materials and technology currently utilized in traditional electrochemical fuel cells，we constructed a temperature-controlled machine press and fabricated a series of membrane-electrode-assembly （MEA） for testing in microbial fuel cells. With these MEAs，a variety of different graphite materials were screened as anodes by using Pt/C coated carbon cloth as cathodes，and were pressed to Nafion proton-exchange membranes. Custom made glass chambers were fabricated to house these membranes，and cultures of Geobacter sulfurreducens were inoculated into MEA-containing chambers to assess current production. Cultures grew at the expense of complete ethanol oxidation，thus these systems represented a new kind of ethanol/O2 fuel cell. Generally，MEA-based microbial fuel cells produced 100-fold more electrical current per unit electrode surface area than previous designs，and could be operated for several months.

摘要： 通过采用传统电化学燃料电池的技术和材料，以寻求提高微生物燃料电池的电流密度，制作基于膜电极的微生物燃料电池。通过构建温控压力机，制作了一系列膜电极（MEA），并对作为正极的多种碳材料进行了筛选。使用定制的玻璃微生物燃料电池来放置膜电极和培养Geobacter sulfurreducens，对产生的电流进行评价。细胞的生长以乙醇为唯一碳源，因而代表了一种新型的乙醇/氧气燃料电池。相比以前的设计，基于膜电极的微生物燃料电池的电极表面每个单位会多产生出100倍的电流，并且可以被长久使用。