Abstract

We report a microfabricated microbial fuel cell (MFC) that produces a high power density using a Geobacteraceae-enriched mixed bacterial culture. The MFC features 4.5-μL anode/cathode chambers defined by 20-μm-thick photo-definable polydimethylsiloxane (PDMS). The short proton diffusion length (20 μm) in the anode lowers electrolyte resistance and consequently enhances power generation. A maximum current density of 16.3 mA/cm 3 and power density of 2.3 mW/cm 3 are achieved. The start-up time is only 2 days for maximum current generation. The MFC was operated under semi-continuous flow conditions, and L-cysteine was added in order to chemically scavenge the dissolved oxygen in the anode chamber.

Original languageEnglish (US)
Title of host publication2010 Solid-State Sensors, Actuators, and Microsystems Workshop
EditorsDavid J. Monk, Kimberly L. Turner
PublisherTransducer Research Foundation
Pages82-85
Number of pages4
ISBN (Electronic)9780964002494
Publication statusPublished - Jan 1 2010
Event2010 Solid-State Sensors, Actuators, and Microsystems Workshop - Hilton Head Island, United States
Duration: Jun 6 2010Jun 10 2010

Publication series

NameTechnical Digest - Solid-State Sensors, Actuators, and Microsystems Workshop

Conference

Conference2010 Solid-State Sensors, Actuators, and Microsystems Workshop
CountryUnited States
CityHilton Head Island
Period6/6/106/10/10

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ASJC Scopus subject areas

  • Control and Systems Engineering
  • Electrical and Electronic Engineering
  • Hardware and Architecture

Cite this

Choi, S., Lee, H. S., Yang, Y., Rittmann, B., & Chae, J. (2010). A high power density mems microbial fuel cell. In D. J. Monk, & K. L. Turner (Eds.), 2010 Solid-State Sensors, Actuators, and Microsystems Workshop (pp. 82-85). (Technical Digest - Solid-State Sensors, Actuators, and Microsystems Workshop). Transducer Research Foundation.