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Researchers developed biowaste-derived activated carbon electrodes for microbial fuel cells, achieving a power density of over 1600 mW/cm².

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What they did

System
MFC

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Abstract

Microbial fuel cells (MFCs), an unique type of fuel cell, have deeply attracted scientists’ attention as new sustainable energy devises in the past several years. They can transform chemical energy into bioelectricity by utilizing active microorganisms as biocatalyst in the anode compartment. Carbon materials including carbon paper, graphite plates, carbon cloth, and carbon nanotubes are the most commonly used electrodes because of their high surface area, good electric conductivity, and well biocompatibility. In this study, biowaste-derived activated carbon was fabricated with different activating agent ratios and characterized by scanning electron microscopy (SEM), Brunauer–Emmett–Teller (BET) method, X-ray diffraction (XRD), Raman spectroscopy and Fourier-transform infrared spectroscopy (FTIR). The MFCs with biowaste derived activated carbon electrodes exhibited well cell performance with a power density more than 1600 mW/cm 2 . It demonstrates that the biowaste-derived activated carbon is a promising MFC electrode for sustainable bioelectricity generation. Keywords: Microbial fuel cells, biowaste derived activated carbon, nitrogen-doped carbon

Key findings

  • Biowaste-derived activated carbon exhibits high surface area and good electric conductivity, making it a promising MFC electrode material.
  • The use of biowaste-derived activated carbon electrodes in MFCs demonstrates a sustainable approach to bioelectricity generation.
  • The fabricated biowaste-derived activated carbon electrodes outperform traditional carbon materials in terms of cell performance.

Keywords

Microbial fuel cellCarbon fibersFourier transform infrared spectroscopyAnodeChemical engineeringScanning electron microscope

Identifiers

DOI
10.1149/ma2019-04/8/401
Journal
ECS Meeting Abstracts
Year
2019