The Effect of Membrane Casting Irregularities on Initial Fuel Cell Performance
Abstract
Abstract Membrane electrode assemblies (MEA) for polymer electrolyte membrane fuel cells (PEMFC) may possess as‐manufactured non‐uniformities in any of its constituent components. This work studies casting irregularities located within the PEM to understand their potential impact on MEA initial performance. Membrane material was cast on a lab‐scale polymer casting line operating either within or at the boundaries of the process window. The resulting membrane material was either pristine in the former case, or, in the latter case, contained air bubbles, cracks, and other irregularities, ranging in size from about 0.6 to 3 mm. Spatial polarization experiments were conducted using a 121‐channel segmented fuel cell system, and thermal imaging was performed subsequently to map hydrogen crossover to spatial performance. While total‐cell polarization data was minimally impacted by the irregularities, the spatial diagnostics showed local performance impacts that, in operation over time, could cause degradation in performance or earlier failure of the MEA. Such impacts could lead to these irregularities being classified as defects, i.e., manufacturing variations that should be identified and not included in a fuel cell stack. Classification of irregularities as defects will ultimately assist the industry by contributing to the development of threshold detection limits for in‐line quality controlmore »
- Authors:
-
[1];
[2];
- National Renewable Energy Lab. (NREL), Golden, CO (United States); Colorado School of Mines, Golden, CO (United States)
- National Renewable Energy Laboratory (NREL), Golden, CO (United States)
- Georgia Inst. of Technology, Atlanta, GA (United States)
- Colorado School of Mines, Golden, CO (United States)
- National Renewable Energy Lab. (NREL), Golden, CO (United States)
- Publication Date:
- Research Org.:
- National Renewable Energy Laboratory (NREL), Golden, CO (United States)
- Sponsoring Org.:
- USDOE Office of Energy Efficiency and Renewable Energy (EERE), Sustainable Transportation Office. Hydrogen Fuel Cell Technologies Office
- OSTI Identifier:
- 1596622
- Alternate Identifier(s):
- OSTI ID: 1594195
- Report Number(s):
- NREL/JA-5900-74521
Journal ID: ISSN 1615-6846
- Grant/Contract Number:
- AC36-08GO28308
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Fuel Cells
- Additional Journal Information:
- Journal Volume: 20; Journal Issue: 1; Journal ID: ISSN 1615-6846
- Publisher:
- Elsevier
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 30 DIRECT ENERGY CONVERSION; 47 OTHER INSTRUMENTATION; defect; infrared thermography; membrane pinhole; polymer electrolyte membrane fuel cells; roll-to-roll manufacturing; segmented cell
Citation Formats
Phillips, Adam, Ulsh, Michael J., Mackay, Jocelyn, Harris, Tequila, Shrivastava, Naveen, Chatterjee, Abheek, Porter, Jason, and Bender, Guido. The Effect of Membrane Casting Irregularities on Initial Fuel Cell Performance. United States: N. p., 2020.
Web. doi:10.1002/fuce.201900149.
Phillips, Adam, Ulsh, Michael J., Mackay, Jocelyn, Harris, Tequila, Shrivastava, Naveen, Chatterjee, Abheek, Porter, Jason, & Bender, Guido. The Effect of Membrane Casting Irregularities on Initial Fuel Cell Performance. United States. https://doi.org/10.1002/fuce.201900149
Phillips, Adam, Ulsh, Michael J., Mackay, Jocelyn, Harris, Tequila, Shrivastava, Naveen, Chatterjee, Abheek, Porter, Jason, and Bender, Guido. Fri .
"The Effect of Membrane Casting Irregularities on Initial Fuel Cell Performance". United States. https://doi.org/10.1002/fuce.201900149. https://www.osti.gov/servlets/purl/1596622.
@article{osti_1596622,
title = {The Effect of Membrane Casting Irregularities on Initial Fuel Cell Performance},
author = {Phillips, Adam and Ulsh, Michael J. and Mackay, Jocelyn and Harris, Tequila and Shrivastava, Naveen and Chatterjee, Abheek and Porter, Jason and Bender, Guido},
abstractNote = {Abstract Membrane electrode assemblies (MEA) for polymer electrolyte membrane fuel cells (PEMFC) may possess as‐manufactured non‐uniformities in any of its constituent components. This work studies casting irregularities located within the PEM to understand their potential impact on MEA initial performance. Membrane material was cast on a lab‐scale polymer casting line operating either within or at the boundaries of the process window. The resulting membrane material was either pristine in the former case, or, in the latter case, contained air bubbles, cracks, and other irregularities, ranging in size from about 0.6 to 3 mm. Spatial polarization experiments were conducted using a 121‐channel segmented fuel cell system, and thermal imaging was performed subsequently to map hydrogen crossover to spatial performance. While total‐cell polarization data was minimally impacted by the irregularities, the spatial diagnostics showed local performance impacts that, in operation over time, could cause degradation in performance or earlier failure of the MEA. Such impacts could lead to these irregularities being classified as defects, i.e., manufacturing variations that should be identified and not included in a fuel cell stack. Classification of irregularities as defects will ultimately assist the industry by contributing to the development of threshold detection limits for in‐line quality control diagnostics.},
doi = {10.1002/fuce.201900149},
journal = {Fuel Cells},
number = 1,
volume = 20,
place = {United States},
year = {Fri Jan 24 00:00:00 EST 2020},
month = {Fri Jan 24 00:00:00 EST 2020}
}
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