Effect of carbon nanotube modified cathode by electrophoretic deposition method on the performance of sediment microbial fuel cells

Dawei Zhu, De Bin Wang, Tian shun Song, Ting Guo, Pingkai Ouyang, Ping Wei, Jingjing Xie

Research output: Contribution to journalArticlepeer-review

30 Scopus citations

Abstract

A multi-walled, carbon nanotube (MWNT)-modified graphite felt (GF) cathode was fabricated to improve the performance of sediment microbial fuel cells (SMFC). Three types of MWNT-modified GF cathodes were prepared by different electrophoretic deposition (EPD) times. Maximum power density of SMFC with MWNT-GF*** cathode at 60 min EPD was 215 ± 9.9 mW m−2. This was 1.6 times that of SMFC with a bare GF cathode. Cyclic voltammetry and the amount of biomass showed that biomass density and electrochemical activity increased as the electrophoretic deposition time extended. Therefore the electrode possesses the highest catalytic behavior toward O2 reduction reaction. This simple process of carbon nanotube modification of a cathode by EPD can serve as an effective technique to improve the performance of SMFC.

Original languageEnglish
Pages (from-to)101-107
Number of pages7
JournalBiotechnology Letters
Volume37
Issue number1
DOIs
StatePublished - 1 Jan 2015

Keywords

  • Carbon nanotube
  • Cathode
  • Electricity production
  • Electrophoretic deposition
  • Fuel cell
  • Sediment microbial fuel cell

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