0
Research Papers: Flows in Complex Systems

Up-Scaled Microfluidic Fuel Cells With Porous Flow-Through Electrodes

[+] Author and Article Information
A. Bazylak

e-mail: abazylak@mie.utoronto.ca
Thermofluidics for Energy and Advanced Materials Laboratory,
Faculty of Applied Science and Engineering,
Department of Mechanical and Industrial Engineering,
University of Toronto,
5 King's College Road,
Toronto, ON, M5S 3G8, Canada

1Corresponding author.

Manuscript received July 30, 2012; final manuscript received November 29, 2012; published online March 19, 2013. Assoc. Editor: Kendra Sharp.

J. Fluids Eng 135(2), 021102 (Mar 19, 2013) (7 pages) Paper No: FE-12-1356; doi: 10.1115/1.4023449 History: Received July 30, 2012; Revised November 29, 2012

In this work, an experimental microfluidic fuel cell is presented with a novel up-scaled porous electrode architecture that provides higher available surface area compared to conventional microfluidic fuel cells, providing the potential for higher overall power outputs. Our proof-of-concept architecture is an up-scaled flow-through fuel cell with more than nine times the active electrode surface area of the flow-through architecture first proposed by Kjeang et al. (2008, “A Microfluidic Fuel Cell With Flow-Through Porous Electrodes,” J. Am. Chem. Soc., 130, pp. 4000–4006). Formic acid and potassium permanganate were employed as the fuel and oxidant, respectively, both dissolved in a sulfuric acid electrolyte. Platinum black was employed as the catalyst for both anode and cathode, and the performances of carbon-based porous electrodes including cloth, fiber, and foam were compared to that of traditional Toray carbon paper (TGP-H-120). The effects of catalyst loading were investigated in a microfluidic fuel cell containing 80 pores per linear inch carbon foam electrodes. A discussion is also provided of current density normalization techniques via projected electrode surface area and electrode volume, the latter of which is a highly informative means for comparing flow-through architectures.

Copyright © 2013 by ASME
Your Session has timed out. Please sign back in to continue.

References

Figures

Grahic Jump Location
Fig. 1

Schematic of the microfluidic fuel cell architecture: (a) assembled and (b) expanded

Grahic Jump Location
Fig. 3

Photographs of the following carbon materials: (a) 80 PPI carbon foam, (b) 100 PPI carbon foam, (c) RPA-TD06P38 carbon fiber, (d) TGP-H-120 Toray carbon paper, and (e) designation B: plain carbon cloth

Grahic Jump Location
Fig. 2

Photograph of a completed microfluidic fuel cell from: (a) top view and (b) bottom view

Grahic Jump Location
Fig. 4

Polarization curves normalized by: (a) projected electrode surface area and (b) electrode volume for: 80 PPI carbon foam (), 100 PPI carbon foam (), carbon fiber (), carbon paper (), and carbon cloth ()

Grahic Jump Location
Fig. 5

Power density curves normalized by: (a) projected electrode surface area and (b) electrode volume for: 80 PPI carbon foam (), 100 PPI carbon foam (), carbon fiber (), carbon paper (), and carbon cloth ()

Grahic Jump Location
Fig. 6

Polarization and power density curves for four MFCs employing 80 PPI carbon foam with varied platinum black catalyst loadings

Grahic Jump Location
Fig. 7

Maximum power density of four MFCs employing 80 PPI carbon foam with varied platinum black catalyst loadings

Tables

Errata

Discussions

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In