阳极流场对单室微生物燃料电池性能的影响

工程热物理学报 , 2011, 32(5): 855-858.

阳极流场对单室微生物燃料电池性能的影响

李明 ^1, , 李俊 ^2, , 朱恂 ^3, , 叶丁丁 ^4, , 廖强 ^5,

1.重庆大学工程热物理研究所,低品位能源利用及系统教育部重点实验室,重庆,400030

2.重庆大学工程热物理研究所,低品位能源利用及系统教育部重点实验室,重庆,400030

3.重庆大学工程热物理研究所,低品位能源利用及系统教育部重点实验室,重庆,400030

4.重庆大学工程热物理研究所,低品位能源利用及系统教育部重点实验室,重庆,400030

5.重庆大学工程热物理研究所,低品位能源利用及系统教育部重点实验室,重庆,400030

基金项目: 国家自然科学基金项目(50806087;50825602) 重庆市自然科学基金(CSTC;2008BB6176) 中央高校基本科研业务费资助(CDJXS11142230)

关键词：单室微生物燃料电池 , 流场结构 , 生物膜 , 电池性能

Effect of Anode Flow Fields on the Performance of a Single-Chamber Microbial Fuel Cell

实验研究了阳极分别采用蛇形和交指型流场的单室微生物燃料电池(MFC)性能,发现采用蛇形流场的单室MFC 不仅启动时间较快,而且性能较好.通过对中间腔室侧的阴阳极电极表面SEM表征发现,阳极采用交指型流场的单室MFC阴阳极表面均有生物膜存在,这部分额外的生物膜阻碍了阴阳极之间的氢离子传输,从而导致阳极采用交指型流场的MFC欧姆内阻增加,电池性能恶化.研究还发现当中间腔室厚度为20 mm时,阳极采用蛇形流场的单室MFC性能最佳.

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