Skip navigation
Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/2280
Title: Enhanced performance of direct methanol fuel cells: A study on the combined effect of various supporting electrolytes, flow channel designs and operating temperatures
Authors: Kumar P.
Dutta K.
Kundu, Patit Paban
Published in: International Journal of Energy Research
Abstract: Establishing a better coordination between operating parameters and flow channel design is one of the most critical factors in achieving an optimum final performance of a fuel cell, since even a marginal change in any of the parameters can sharply affect the cell's performance. In this study, we report the use of three different acids, viz. sulphuric acid (H2SO4), formic acid (HCOOH) and phosphoric acid (H3PO4) as supporting electrolytes in combination with 2 M methanol fuel, wherein we demonstrated the effects of different combinations of acidic fuels and channel designs on the final cell performance. For this purpose, we made use of four different types of serpentine flow design. In the process, it was observed that an addition of 2 M concentrations of H2SO4 and H3PO4 enhanced the cell performance sharply in terms of current density, reaching values of 210 mAcm-2 and 180 mAcm-2, respectively, when analyzed at 0.2 V potential. This result was a considerable improvement over the current density value of 90 mAcm-2 achieved while using only 2 M methanol analyzed at the same potential. Moreover, the open-circuit voltage showed a value of greater than 0.6 V for both fuel samples. With a flow channel length of 650 mm (A5SF2) and at an open ratio of 52%, we obtained maximum power values of 42 mWcm-2 and 36 mWcm-2 for fuels containing 2 M H2SO4 (M2S2) and 2 M H3PO4 (M2P2), respectively, when analyzed at 70°C. © 2013 John Wiley & Sons, Ltd.
Citation: International Journal of Energy Research (2014), 38(1): 41-50
URI: https://doi.org/10.1002/er.3034
http://repository.iitr.ac.in/handle/123456789/2280
Issue Date: 2014
Keywords: Acidic fuels
DMFC performance
Flow channel
Supporting electrolyte
ISSN: 0363907X
Author Scopus IDs: 55642355800
7005115695
35475516300
Author Affiliations: Kumar, P., Department of Polymer Science and Technology, University College of Science and Technology, University of Calcutta, Kolkata, 700009, India
Dutta, K., Department of Polymer Science and Technology, University College of Science and Technology, University of Calcutta, Kolkata, 700009, India
Kundu, P.P., Department of Polymer Science and Technology, University College of Science and Technology, University of Calcutta, Kolkata, 700009, India
Corresponding Author: Kundu, P.P.; Department of Polymer Science and Technology, University College of Science and Technology, University of Calcutta, Kolkata, 700009, India; email: ppk923@yahoo.com
Appears in Collections:Journal Publications [CH]

Files in This Item:
There are no files associated with this item.
Show full item record


Items in Repository are protected by copyright, with all rights reserved, unless otherwise indicated.