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Publication

Microbially-charged electrochemical fuel for energy storage in a redox flow cell

Title
Microbially-charged electrochemical fuel for energy storage in a redox flow cell
Type
Article in International Scientific Journal
Year
2020-01
Authors
Santos, M.S.S.
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Peixoto, L.
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azevedo, j.
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FEUP
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Ricardo Monteiro
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FEUP
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Dias-Ferreira, C.
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Alves, M.M.
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Adélio Mendes
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Journal
Vol. 445
ISSN: 0378-7753
Publisher: Elsevier
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Publicação em ISI Web of Knowledge ISI Web of Knowledge - 0 Citations
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ScienceDirect (Elsevier)
Scientific classification
FOS: Engineering and technology > Chemical engineering
Other information
Authenticus ID: P-00R-6SD
Abstract (EN): A Bioelectrochemical System (BES) is used for charging an electrochemical fuel to be used in a Redox Flow Cell (RFC), demonstrating the first proof of concept of a microbially-charged electrochemical fuel. Geobacter sulfur-reducens, electroactive bacteria, was used to charge anthraquinone-2,6-disulfonate (2,6-AQDS) producing current densities of ca. 200-500 mA m(-2) and maximum power densities of ca. 33 mW m(-2). The microbially-charged electrochemical fuel and potassium ferricyanide, K-3[Fe(CN)(6)] were introduced in a RFC producing a potential difference of 0.62 V, with a ca. 80% energy conversion efficiency. The use of a BES for charging the posilyte of a RFC is now envisioned. The bio-conversion of waste biomass energy into electrochemical fuels (microbially-charged electrochemical fuel for negalyte and posilyte) for later use in a RFC to produce electricity is a promising approach of converting biomass into storable and easy to use energy.
Language: English
Type (Professor's evaluation): Scientific
No. of pages: 10
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