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Title: Facile Synthesis of Fe/N/S‐Doped Carbon Tubes as High‐Performance Cathode and Anode for Microbial Fuel Cells

Journal Article · · ChemCatChem
 [1];  [2];  [2];  [2];  [3];  [4]; ORCiD logo [4]
  1. State Key Laboratory of Hydraulics and Mountain River Engineering College of Water Resource &, Hydropower Sichuan University Chengdu 610065 P. R. China
  2. Institute of Engineering Thermophysics School of Energy and Power Engineering Chongqing University Chongqing 400030 P. R. China
  3. Department of Chemistry and Biochemistry University of California Santa Cruz CA-95064 USA, College of Chemistry and Chemical Engineering Lanzhou University Lanzhou 730000 P. R. China
  4. Department of Chemistry and Biochemistry University of California Santa Cruz CA-95064 USA

Abstract As a renewable energy technology, microbial fuel cell (MFC) has been attracting increasing attention in recent decades. However, practical applications of MFCs has been hampered by the unsatisfactory electrode performance, in particular, at the cathode. Herein, Fe/N/S‐doped carbon hollow tubes were prepared by a facile two‐stage procedure involving hydrothermal treatment and pyrolysis at controlled temperatures. Electrochemical studies showed that the obtained samples exhibited an apparent electrocatalytic activity towards oxygen reduction reaction in both alkaline and acidic media, a performance comparable to that of commercial Pt/C, and the sample prepared at 800 °C stood out as the best among the series with a half‐wave potential of +0.81 V vs. RHE and an electron transfer number of 3.98 at +0.6 V vs. RHE. The Fe/N/S‐doped carbon tubes also exhibited a remarkable performance as an MFC anode by facilitating bacterial growth and electron transfer between the biofilm and electrode. In fact, an MFC based on the carbon tubes as both cathode and anode showed a markedly higher performance (maximum power density 479 W m −3 ) than the control MFC based on a graphene aerogel anode and Pt/C cathode (359 W m −3 ). These results suggest that Fe/N/S‐doped carbon composites can be used for the fabrication of high‐efficiency MFC electrodes.

Sponsoring Organization:
USDOE
OSTI ID:
1566279
Journal Information:
ChemCatChem, Journal Name: ChemCatChem Vol. 11 Journal Issue: 24; ISSN 1867-3880
Publisher:
Wiley Blackwell (John Wiley & Sons)Copyright Statement
Country of Publication:
Germany
Language:
English
Citation Metrics:
Cited by: 9 works
Citation information provided by
Web of Science

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