1.Dongguan Key Laboratory of Green Energy,Department of City and Environment Science,City College of Dongguan University of Technology,Dongguan 523419; 2.Guangdong Engineering and Technology Research Center for Advanced Nanomaterials,School of Environment and Civil Engineering,Dongguan University of Technology,Dongguan 523808
Abstract: Microbial fuel cells(MFCs) are a device that can directly transfer chemistry energy from wastewater to electricity energy.Presently,relatively low power density limited its applications.One solution is to develop high performance anode materials.An advanced actived three-dimensional porous carbon(3DPC) anode was obtained by hummers oxidiation combined with ascorbic acid reduction based on biomass straws.The morphology of the 3DPC was observed using scanning electron microscope(SEM).It was found that the activation process can produce many pore structures of different sizes,which can facilitate mass transfer and diffusion.An improvement of the electrochemical properties can be observed in the electrochemical impedance spectroscopy(EIS),cyclic voltammetry(CV) tests.The microbial fuel cells based on the actived 3DPC exhibited a highest power density of 1184.5W/m3,which is much higher anode than that of pristine 3DPC-MFCs(774.8W/m3).This study provided new ideas and methods for the construction of novel carbon-based 3D anode materials.
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