石墨烯由于具有优异的导电性、高的比表面积、好的生物相容性,受到各界广泛关注.本文利用肼化学还原法得到比表面积为535m2/g的石墨烯,利用此石墨烯修饰碳布(GNS-anode)作为微生物燃料电池阳极,并与多壁碳纳米管修饰的阳极(MWCNT-anode)和未修饰的碳布(CC-anode)进行了详细的比较.碳纳米管和石墨烯的形貌和特性采用SEM、BET、TEM、XRD表征.电极的电化学性质利用循环伏安法(CV)和交流阻抗谱(EIS)衡量.装配GNS-anode运行的微生物燃料电池获得的最大功率密度为652 mW/m2,分别是MWCNT-anode和CC-anode的1.4倍和2.0倍,表明石墨烯能够提高微生物燃料电池(MFC)阳极性能,从而提高MFC功率输出.
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