Journal
JOURNAL OF POWER SOURCES
Volume 351, Issue -, Pages 67-73Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jpowsour.2017.03.102
Keywords
Microfluidic fuel cell; Membrane-less fuel cell; Multiple laminar flow; Modified bipolar stack; Planar scale-up
Funding
- Basic Science Research Program through the National Research Foundation of Korea (NRF) - Ministry of Science, ICT and future Planning [NRF-2015R1A2A2A01006088]
- National Research Foundation of Korea [2015R1A2A2A01006088] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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Power densities of microfluidic fuel cells are still not high enough for power source applications. In this study, we propose a novel planar stack to increase the total power of a microfluidic fuel cell. Electrical connections in serial or parallel are made within one channel by using multiple laminar flow. A planar structure with flow-over electrodes of platinum are adopted for easy integration with other planar micro devices. These structures are made by micromachining with a thin film process. Fuel cell performance and total ohmic resistances are measured experimentally with a formic acid-based fuel. The results show that the proposed single stacks provide more power density with a comparatively small total ohmic resistance and require less space than that of the fuel cell arrays. The peak volumetric power density improves by 97.5% and 39.3% using parallel and serial electrical connections, respectively, at a 300 mu L min(-1) flow rate. Utilizing this single stack, we believe that microfluidic fuel cells can be integrated into a compact planar configuration to achieve a power high enough for energy source applications. (C) 2017 Elsevier B.V. All rights reserved.
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