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Parylene C-coated PDMS-based microfluidic microbial fuel cells with low oxygen permeability

Authors
Yoon, Joon YongAhn, YoominSehroeder, Uwe
Issue Date
Sep-2018
Publisher
ELSEVIER SCIENCE BV
Keywords
Microbial fuel cell; Membrane-less; Co-laminar flow; Parylene C; Low oxygen permeability; Micropillar-structured electrode
Citation
JOURNAL OF POWER SOURCES, v.398, pp.209 - 214
Indexed
SCIE
SCOPUS
Journal Title
JOURNAL OF POWER SOURCES
Volume
398
Start Page
209
End Page
214
URI
https://scholarworks.bwise.kr/erica/handle/2021.sw.erica/5629
DOI
10.1016/j.jpowsour.2018.07.064
ISSN
0378-7753
Abstract
Oxygen invasion is the main bottleneck in developing microscale microbial fuel cells as an efficient power source. This study reports for the first time the development of a polydimethylsiloxane-based co-laminar microbial fuel cell utilizing a parylene C coating to lower the oxygen permeability. In addition, the surface of the Au electrode is micropillar-structured to reduce the internal resistance of the microbial fuel cell. The performance of this novel microfluidic microbial fuel cell is investigated under various flow rates of electrolytes. The shear stress simulation shows that shear stress, induced by increasing flow rates, strongly impacts the biofilm electrode performance. To the best of our knowledge, the measured peak power density (71.89 +/- 5.13 mu W cm(-2)) and maximum current density (182.0 +/- 4.82 mu A cm(-2)) with the structured electrode are higher than those of any other reported polydimethylsiloxane-based microscale microbial fuel cells. The proposed microbial fuel cell appears to be a promising power supply that can be easily integrated with portable or implantable biomedical devices.
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YOON, JOON YONG
ERICA 공학대학 (DEPARTMENT OF MECHANICAL ENGINEERING)
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