Reactive impinging-flow technique for polymer-electrolyte-fuel-cell electrode-defect detection
Abstract
Reactive impinging flow (RIF) is a novel quality-control method for defect detection (i.e., reduction in Pt catalyst loading) in gas-diffusion electrodes (GDEs) on weblines. The technique uses infrared thermography to detect temperature of a nonflammable ( < 4% H 2 ) reactive mixture of H 2 /O 2 in N 2 impinging and reacting on a Pt catalytic surface. In this paper, different GDE size defects (with catalyst-loading reductions of 25, 50, and 100%) are detected at various webline speeds (3.048 and 9.144 m min -1 ) and gas flowrates (32.5 or 50 standard L min -1 ). Furthermore, a model is developed and validated for the technique, and it is subsequently used to optimize operating conditions and explore the applicability of the technique to a range of defects. The model suggests that increased detection can be achieved by recting more of the impinging H 2 , which can be accomplished by placing blocking substrates on the top, bottom, or both of the GDE; placing a substrate on both results in a factor of four increase in the temperature differential, which is needed for smaller defect detection. Overall, the RIF technique is shown to be a promising route for in-line,more »
- Authors:
-
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Tufts Univ., Medford, MA (United States). Dept. of Mechanical Engineering
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- National Renewable Energy Lab. (NREL), Golden, CO (United States)
- Publication Date:
- Research Org.:
- National Renewable Energy Laboratory (NREL), Golden, CO (United States); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
- Sponsoring Org.:
- USDOE Office of Energy Efficiency and Renewable Energy (EERE), Sustainable Transportation Office. Hydrogen Fuel Cell Technologies Office (HFTO)
- OSTI Identifier:
- 1329463
- Alternate Identifier(s):
- OSTI ID: 1397381; OSTI ID: 1440944
- Report Number(s):
- NREL/JA-5900-67301
Journal ID: ISSN 0378-7753
- Grant/Contract Number:
- AC36-08GO28308; AC02-05CH11231; AC36-08-GO28308
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Journal of Power Sources
- Additional Journal Information:
- Journal Volume: 332; Journal ID: ISSN 0378-7753
- Publisher:
- Elsevier
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 30 DIRECT ENERGY CONVERSION; polymer-electrolyte fuel-cells; reactive impinging flow; quality control; defect detection
Citation Formats
Zenyuk, Iryna V., Englund, Nicholas, Bender, Guido, Weber, Adam Z., and Ulsh, Michael. Reactive impinging-flow technique for polymer-electrolyte-fuel-cell electrode-defect detection. United States: N. p., 2016.
Web. doi:10.1016/j.jpowsour.2016.09.109.
Zenyuk, Iryna V., Englund, Nicholas, Bender, Guido, Weber, Adam Z., & Ulsh, Michael. Reactive impinging-flow technique for polymer-electrolyte-fuel-cell electrode-defect detection. United States. https://doi.org/10.1016/j.jpowsour.2016.09.109
Zenyuk, Iryna V., Englund, Nicholas, Bender, Guido, Weber, Adam Z., and Ulsh, Michael. Thu .
"Reactive impinging-flow technique for polymer-electrolyte-fuel-cell electrode-defect detection". United States. https://doi.org/10.1016/j.jpowsour.2016.09.109. https://www.osti.gov/servlets/purl/1329463.
@article{osti_1329463,
title = {Reactive impinging-flow technique for polymer-electrolyte-fuel-cell electrode-defect detection},
author = {Zenyuk, Iryna V. and Englund, Nicholas and Bender, Guido and Weber, Adam Z. and Ulsh, Michael},
abstractNote = {Reactive impinging flow (RIF) is a novel quality-control method for defect detection (i.e., reduction in Pt catalyst loading) in gas-diffusion electrodes (GDEs) on weblines. The technique uses infrared thermography to detect temperature of a nonflammable ( < 4% H 2 ) reactive mixture of H 2 /O 2 in N 2 impinging and reacting on a Pt catalytic surface. In this paper, different GDE size defects (with catalyst-loading reductions of 25, 50, and 100%) are detected at various webline speeds (3.048 and 9.144 m min -1 ) and gas flowrates (32.5 or 50 standard L min -1 ). Furthermore, a model is developed and validated for the technique, and it is subsequently used to optimize operating conditions and explore the applicability of the technique to a range of defects. The model suggests that increased detection can be achieved by recting more of the impinging H 2 , which can be accomplished by placing blocking substrates on the top, bottom, or both of the GDE; placing a substrate on both results in a factor of four increase in the temperature differential, which is needed for smaller defect detection. Overall, the RIF technique is shown to be a promising route for in-line, high-speed, large-area detection of GDE defects on moving weblines.},
doi = {10.1016/j.jpowsour.2016.09.109},
journal = {Journal of Power Sources},
number = ,
volume = 332,
place = {United States},
year = {Thu Sep 29 00:00:00 EDT 2016},
month = {Thu Sep 29 00:00:00 EDT 2016}
}
Web of Science
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