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Electron transfer interpretation of the biofilm-coated anode of a microbial fuel cell and the cathode modification effects on its power

Title
Electron transfer interpretation of the biofilm-coated anode of a microbial fuel cell and the cathode modification effects on its power
Authors
Yang, YaminChoi, ChansooXie, GuorongPark, Jong-DeokKe, ShaoYu, Jong-SungZhou, JuanjuanLim, Bongsu
DGIST Authors
Yu, Jong-Sung
Issue Date
2019-06
Citation
Bioelectrochemistry, 127, 94-103
Type
Article
Article Type
Article
Author Keywords
Biofilm-coated electrodesExtracellular electron transferMarcus theoryMesoporous carbon-modified cathodeMicrobial fuel cell
Keywords
AnodesBacteriaBiofilmsCarbonCarbon filmsCathodesCoated fuel particlesCoated wire electrodesElectric weldingElectron transitionsFuel cellsMesoporous materialsCarbon-cloth electrodesCoated electrodesExtracellular electron transferFlavin mono nucleotides (FMN)Marcus theoryMesoporous carbonNicotinamide adenine dinucleotidesOrdered mesoporous carbonMicrobial fuel cells
ISSN
1567-5394
Abstract
Biofilm-coated electrodes and outer cell membrane-mimicked electrodes were examined to verify an extracellular electron transfer mechanism using Marcus theory for a donor–acceptor electron transfer. Redox couple-bound membrane electrodes were prepared by impregnating redox coenzymes into Nafion films on carbon cloth electrodes. The electron transfer was believed to occur sequentially from acetate to nicotinamide adenine dinucleotide (NAD), c-type cytochrome, flavin mononucleotide (FMN) (or riboflavin (RBF)) and the anode substrate. Excellent polarisation and power density characteristics were contributed by the modification of the cathode with a high-surface-area ordered mesoporous carbon or a hollow core–mesoporous shell carbon. The maximum power density of the microbial fuel cell (MFC) could be improved by a factor of two mainly due to the accelerated electron consumption by modifying the cathode surfaces within three-dimensionally interconnected mesoporous carbon particles, and the anode was coated with a mixed culture of anaerobic bacteria. © 2019
URI
http://hdl.handle.net/20.500.11750/9782
DOI
10.1016/j.bioelechem.2019.02.004
Publisher
Elsevier BV
Related Researcher
  • Author Yu, Jong-Sung Light, Salts and Water Research Group
  • Research Interests Materials chemistry; nanomaterials; electrochemistry; carbon and porous materials; fuel cell; battery; supercapacitor; sensor and photochemical catalyst
Files:
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Collection:
Department of Energy Science and EngineeringLight, Salts and Water Research Group1. Journal Articles


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