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Proton exchange membrane and electrode surface areas as factors that affect power generation in microbial fuel cells.
Appl Microbiol Biotechnol. 2006 Mar; 70(2):162-9.AM

Abstract

Power generation in microbial fuel cells (MFCs) is a function of the surface areas of the proton exchange membrane (PEM) and the cathode relative to that of the anode. To demonstrate this, the sizes of the anode and cathode were varied in two-chambered MFCs having PEMs with three different surface areas (A (PEM)=3.5, 6.2, or 30.6 cm(2)). For a fixed anode and cathode surface area (A (An)=A (Cat)=22.5 cm(2)), the power density normalized to the anode surface area increased with the PEM size in the order 45 mW/m(2) (A (PEM)=3.5 cm(2)), 68 mW/m(2) (A (PEM)=6.2 cm(2)), and 190 mW/m(2) (A (PEM)=30.6 cm(2)). PEM surface area was shown to limit power output when the surface area of the PEM was smaller than that of the electrodes due to an increase in internal resistance. When the relative cross sections of the PEM, anode, and cathode were scaled according to 2A (Cat)=A(PEM)=2A (An), the maximum power densities of the three different MFCs, based on the surface area of the PEM (A (PEM)=3.5, 6.2, or 30.6 cm(2)), were the same (168+/-4.53 mW/m(2)). Increasing the ionic strength and using ferricyanide at the cathode also increased power output.

Authors+Show Affiliations

Department of Civil and Environmental Engineering, The Pennsylvania State University, University Park, 16802, USA.No affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

16167143

Citation

Oh, Sang-Eun, and Bruce E. Logan. "Proton Exchange Membrane and Electrode Surface Areas as Factors That Affect Power Generation in Microbial Fuel Cells." Applied Microbiology and Biotechnology, vol. 70, no. 2, 2006, pp. 162-9.
Oh SE, Logan BE. Proton exchange membrane and electrode surface areas as factors that affect power generation in microbial fuel cells. Appl Microbiol Biotechnol. 2006;70(2):162-9.
Oh, S. E., & Logan, B. E. (2006). Proton exchange membrane and electrode surface areas as factors that affect power generation in microbial fuel cells. Applied Microbiology and Biotechnology, 70(2), 162-9.
Oh SE, Logan BE. Proton Exchange Membrane and Electrode Surface Areas as Factors That Affect Power Generation in Microbial Fuel Cells. Appl Microbiol Biotechnol. 2006;70(2):162-9. PubMed PMID: 16167143.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Proton exchange membrane and electrode surface areas as factors that affect power generation in microbial fuel cells. AU - Oh,Sang-Eun, AU - Logan,Bruce E, Y1 - 2005/09/16/ PY - 2005/05/16/received PY - 2005/06/15/accepted PY - 2005/06/09/revised PY - 2005/9/17/pubmed PY - 2006/6/23/medline PY - 2005/9/17/entrez SP - 162 EP - 9 JF - Applied microbiology and biotechnology JO - Appl Microbiol Biotechnol VL - 70 IS - 2 N2 - Power generation in microbial fuel cells (MFCs) is a function of the surface areas of the proton exchange membrane (PEM) and the cathode relative to that of the anode. To demonstrate this, the sizes of the anode and cathode were varied in two-chambered MFCs having PEMs with three different surface areas (A (PEM)=3.5, 6.2, or 30.6 cm(2)). For a fixed anode and cathode surface area (A (An)=A (Cat)=22.5 cm(2)), the power density normalized to the anode surface area increased with the PEM size in the order 45 mW/m(2) (A (PEM)=3.5 cm(2)), 68 mW/m(2) (A (PEM)=6.2 cm(2)), and 190 mW/m(2) (A (PEM)=30.6 cm(2)). PEM surface area was shown to limit power output when the surface area of the PEM was smaller than that of the electrodes due to an increase in internal resistance. When the relative cross sections of the PEM, anode, and cathode were scaled according to 2A (Cat)=A(PEM)=2A (An), the maximum power densities of the three different MFCs, based on the surface area of the PEM (A (PEM)=3.5, 6.2, or 30.6 cm(2)), were the same (168+/-4.53 mW/m(2)). Increasing the ionic strength and using ferricyanide at the cathode also increased power output. SN - 0175-7598 UR - https://www.unboundmedicine.com/medline/citation/16167143/Proton_exchange_membrane_and_electrode_surface_areas_as_factors_that_affect_power_generation_in_microbial_fuel_cells_ L2 - https://dx.doi.org/10.1007/s00253-005-0066-y DB - PRIME DP - Unbound Medicine ER -