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将桉树叶提取液绿色还原氧化石墨烯(G-rGO)电极和微生物还原氧化石墨烯(B-rGO)电极依次作为微生物燃料电池(MFC)阳极,采用红外光谱(FTIR)、X射线衍射(XRD)、扫描电镜(SEM)对所制备的电极进行表征,并采用循环伏安法(CV)、交流阻抗法(EIS)对比2种电极的电化学性能.结果发现,G-rGO阳极的内阻为243.87Ω,应用于MFC时最大功率密度和最大输出电压分别为18.77 W·m~(-3)和760 mV,对照组B-rGO电极的内阻为299.11Ω,将其应用于MFC时最大功率密度和最大输出电压分别为13.16 W·m~(-3)和635 mV,对照组未修饰阳极的内阻为375.21Ω,最大功率密度和最大输出电压分别为8.97 W·m~(-3)和480 mV.研究表明,G-rGO电极电阻更小,导电性能更优越.
The G-rGO electrode and the B-rGO electrode were used as the anode of microbial fuel cell (MFC) in turn. The structure of the electrode was characterized by FTIR, XRD, ) And SEM, respectively.The electrochemical properties of the two electrodes were compared by cyclic voltammetry (CV) and alternating current impedance spectroscopy (EIS) .The results showed that the internal resistance of the G-rGO anode Was 243.87Ω. The maximum power density and the maximum output voltage were 18.77 W · m -3 and 760 mV when applied to MFC. The internal resistance of B-rGO electrode in control group was 299.11Ω, which was the largest when applied to MFC The power density and the maximum output voltage were 13.16 W · m -3 and 635 mV, respectively. The internal resistance of the unmodified anode in the control group was 375.21Ω, and the maximum power density and the maximum output voltage were 8.97 W · m -3 ) And 480 mV.Research shows that the resistance of G-rGO electrode is smaller and the conductivity is better.