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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

Electron transfer interpretation of the biofilm-coated anode of a microbial fuel cell and the cathode modification effects on its power
Yang, YaminChoi, ChansooXie, GuorongPark, Jong-DeokKe, ShaoYu, Jong-SungZhou, JuanjuanLim, Bongsu
DGIST Authors
Yu, Jong-Sung
Issued Date
Article Type
Author Keywords
Biofilm-coated electrodesExtracellular electron transferMarcus theoryMesoporous carbon-modified cathodeMicrobial fuel cell
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
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
Elsevier BV
Related Researcher
  • 유종성 Yu, Jong-Sung 에너지공학과
  • Research Interests Materials chemistry; nanomaterials; electrochemistry; carbon and porous materials; fuel cell; battery; supercapacitor; sensor and photochemical catalyst
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Department of Energy Science and Engineering Light, Salts and Water Research Group 1. Journal Articles


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