What is it about?
Microbial fuel cells (MFC) power production is limited by the cathodic O2 reduction reaction (ORR). The quest for Pt-free materials for improving the cathodic ORR in MFCs is a challenging task. Birnessite-type MnO2/carbon cathode in MFC has been rarely reported so far. In this work, a birnessite/C cathode was tested in a MFC
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Why is it important?
The volumetric power density improved from 224 mW m-3 to 6201 mW m-3 by replacing plain C-cathode for birnessite/C cathode in a MFC. Delta-proteobacteria were found at the C-anode and they were associated with the high-power densities obtained.
Perspectives
Birnessite/C is a promising cathodic electrode because its synthesis is straightforward, not expensive and it could promote the ORR and improve the power density in MFCs.
PhD Alberto Alvarez.Gallegos
Universidad Autonoma del Estado de Morelos
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This page is a summary of: Improving the power density of a
Geobacter
consortium‐based microbial fuel cell by incorporating a highly dispersed birnessite/C cathode, Journal of Chemical Technology & Biotechnology, June 2020, Wiley,
DOI: 10.1002/jctb.6495.
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