The feasibility of an alternative fuel cell architecture, called a ribbon membrane electrode assembly (MEA), is demonstrated for low-temperature polymer electrolyte membrane (PEM) fuel cells used in portable power applications by comparing it to a traditional bipolar “stack” architecture. A ribbon MEA consists of adjacent PEM cells sharing a common gas diffusion layer to allow for lateral electrical current flow and an integral gas-tight, conductive interconnect/seal, where adjacent cells meet to prevent reactant gas leakage. The resulting lateral arrangement of MEAs can be used to supply all MEAs simultaneously instead of individual bipolar plates with flow fields for a stack. A pair of two-cell ribbon MEAs, with and without an interconnect/seal, were designed, prototyped, and sealed by thermal pressing. The MEAs were clamped in a two-piece box fixture to provide reactant gases on the anode and cathode sides, hooked to a fuel cell (FC) test stand and yielded an open circuit voltage (OCV) of 1.43 V with an interconnect/seal and 0.6 V without. A two-cell bipolar stack PEMFC with identical MEA specifications had an OCV of 1.86 V. Polarization curves for the ribbon MEA with interconnect/seal showed the sensitivity of performance to clamping pressure and positioning of the copper current collectors. The ribbon MEA polarization curve was also shifted downward by 0.42 V as compared with that of the traditional stack, and suspected causes (e.g., gas leaking) are attributable to the nonoptimal test fixture design. Hence, the ribbon MEA architecture is shown to be feasible. Future work suggested includes improvements to the test fixture design, development of automated manufacturing capabilities for high volume production, and demonstration of a multicell () ribbon MEA PEMFC design.
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October 2010
This article was originally published in
Journal of Fuel Cell Science and Technology
Research Papers
A Feasibility Study of Ribbon Architecture for PEM Fuel Cells
Daniel F. Walczyk,
Daniel F. Walczyk
Department of Mechanical, Aerospace, and Nuclear Engineering,
Rensselaer Polytechnic Institute
, Troy, NY 12180
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Jaskaran S. Sangra
Jaskaran S. Sangra
Department of Mechanical, Aerospace, and Nuclear Engineering,
Rensselaer Polytechnic Institute
, Troy, NY 12180
Search for other works by this author on:
Daniel F. Walczyk
Department of Mechanical, Aerospace, and Nuclear Engineering,
Rensselaer Polytechnic Institute
, Troy, NY 12180
Jaskaran S. Sangra
Department of Mechanical, Aerospace, and Nuclear Engineering,
Rensselaer Polytechnic Institute
, Troy, NY 12180J. Fuel Cell Sci. Technol. Oct 2010, 7(5): 051001 (8 pages)
Published Online: July 8, 2010
Article history
Received:
July 14, 2008
Revised:
October 23, 2009
Online:
July 8, 2010
Published:
July 8, 2010
Citation
Walczyk, D. F., and Sangra, J. S. (July 8, 2010). "A Feasibility Study of Ribbon Architecture for PEM Fuel Cells." ASME. J. Fuel Cell Sci. Technol. October 2010; 7(5): 051001. https://doi.org/10.1115/1.4001758
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