3 Scopus citations

Abstract

We report a micro-scale microbial fuel cell (MFC), having an ultramicroelectrode (UME) as its anode, aiming for a miniaturized energy converter of carbon-neutral renewable energy. Micro-scale MFCs have been studied for many years, yet the power density of them is orders of magnitude lower than that of macro-scale counterparts. In order to address this limitation, this work utilizes a ring-shape UME, which aims to enhance the diffusion of ions at the vicinity of micro-organisms, forming their biofilm on the UME. Areal and volumetric power densities of 7.72 W/m2 and 3,658 W/m3 are obtained, respectively; both are the highest ever reported among all MFCs to date, regardless of their sizes. In addition to the power densities, coulombic efficiency (CE) of 70 % and energy efficiencies of 20 % are marked, which makes the micro-scale MFC an attractive alternative in existing energy conversion portfolio.

Original languageEnglish (US)
Title of host publicationIEEE 26th International Conference on Micro Electro Mechanical Systems, MEMS 2013
Pages869-872
Number of pages4
DOIs
StatePublished - Apr 2 2013
EventIEEE 26th International Conference on Micro Electro Mechanical Systems, MEMS 2013 - Taipei, Taiwan, Province of China
Duration: Jan 20 2013Jan 24 2013

Publication series

NameProceedings of the IEEE International Conference on Micro Electro Mechanical Systems (MEMS)
ISSN (Print)1084-6999

Other

OtherIEEE 26th International Conference on Micro Electro Mechanical Systems, MEMS 2013
CountryTaiwan, Province of China
CityTaipei
Period1/20/131/24/13

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Mechanical Engineering
  • Electrical and Electronic Engineering

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    Ren, H., Rangaswami, S., Lee, H. S., & Chae, J. (2013). A micro-scale microbial fule cell (MFC) having ultramicroelectrode (UME) anode. In IEEE 26th International Conference on Micro Electro Mechanical Systems, MEMS 2013 (pp. 869-872). [6474381] (Proceedings of the IEEE International Conference on Micro Electro Mechanical Systems (MEMS)). https://doi.org/10.1109/MEMSYS.2013.6474381