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以十二烷基苯磺酸钠(SDBS)为掺杂剂,氯化高铁为氧化剂,采用化学氧化法制备了聚吡咯/多壁碳纳米管(PPy/MWCNTs)复合材料,并以该复合材料制备海底微生物燃料电池的阳极,并测试了改性阳极及电池的电化学性能.研究表明,聚吡咯紧密包裹在MWCNTs表面,改性阳极最大交换电流密度0.66 mA/cm2,是未改性的3.6倍.改性电池的最大功率密度为408.8 mW/m2,是未改性电池的5倍多.改性电极的电容是赝电容和双电层电容协同作用的结果,显著提高了电子传递效率和抗极化性能.提出了一种阳极/生物膜界面电子传递的新机理.

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