TY - JOUR
T1 - Optimal biofilm formation and power generation in a micro-sized microbial fuel cell (MFC)
AU - Choi, Seokheun
AU - Chae, Junseok
N1 - Funding Information:
Junseok Chae received the BS degree in metallurgical engineering from Korea University, Seoul, Korea, in 1998, and the MS and PhD degrees in electrical engineering and computer science from the University of Michigan, Ann Arbor, in 2000 and 2003, respectively. He joined Arizona State University, Tempe, in 2005 as an Assistant Professor, and he is currently an Associate Professor of electrical engineering. He has published more than 95 journal and conference articles, two book chapters, and one book, and he holds three U.S. patents. His areas of interest are MEMS sensors/actuators, integrating MEMS with readout/control electronics, and micropackaging. Dr. Chae was the recipient of the First Place Prize and the Best Paper Award in the Design Automation Conference (DAC) Student Design Contest in 2001. He was the recipient of a National Science Foundation CAREER Award for a MEMS protein sensor array.
Publisher Copyright:
© 2012 Elsevier B.V. All rights reserved.
Copyright:
Copyright 2017 Elsevier B.V., All rights reserved.
PY - 2013/6/1
Y1 - 2013/6/1
N2 - Microbial fuel cells (MFCs) represent an emerging technology for generating electricity from renewable biomass. Micro-sized MFCs show promising applications in certain niche applications. However, existing micro-sized MFCs are generally limited by their low power density, rendering them insufficient for practical applications. Here, we report a micro-sized MFC having optimal biofilm formation and minimal oxygen invasion into its anode chamber to generate high power density. The biofilm formed by exoelectrogen, Geobacter sulfurreducens, was studied by using four different thicknesses of photo-definable polydimethylsiloxane (PDMS) spacer; 10, 20, 55, and 155 μm. Both current and power densities were significantly limited when the PDMS spacer was less than 55 μm thick. The maximum power density of our MFC was 95 μW/cm2, the highest value among previously reported micro-sized MFCs and even comparable to that of macro-scale counterparts.
AB - Microbial fuel cells (MFCs) represent an emerging technology for generating electricity from renewable biomass. Micro-sized MFCs show promising applications in certain niche applications. However, existing micro-sized MFCs are generally limited by their low power density, rendering them insufficient for practical applications. Here, we report a micro-sized MFC having optimal biofilm formation and minimal oxygen invasion into its anode chamber to generate high power density. The biofilm formed by exoelectrogen, Geobacter sulfurreducens, was studied by using four different thicknesses of photo-definable polydimethylsiloxane (PDMS) spacer; 10, 20, 55, and 155 μm. Both current and power densities were significantly limited when the PDMS spacer was less than 55 μm thick. The maximum power density of our MFC was 95 μW/cm2, the highest value among previously reported micro-sized MFCs and even comparable to that of macro-scale counterparts.
KW - Geobacter sulfurreducens
KW - MEMS
KW - Micro-sized
KW - Microbial fuel cells
UR - http://www.scopus.com/inward/record.url?scp=85027957914&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85027957914&partnerID=8YFLogxK
U2 - 10.1016/j.sna.2012.07.015
DO - 10.1016/j.sna.2012.07.015
M3 - Article
AN - SCOPUS:85027957914
SN - 0924-4247
VL - 195
SP - 206
EP - 212
JO - Sensors and Actuators A: Physical
JF - Sensors and Actuators A: Physical
ER -