Rapid detection of defects in fuel-cell electrodes using infrared reactive-flow-through technique

TitleRapid detection of defects in fuel-cell electrodes using infrared reactive-flow-through technique
Publication TypeJournal Article
Year of Publication2014
AuthorsDas, Prodip K., Adam Z. Weber, Guido Bender, Austin Manak, Daniel Bittinat, Andrew M. Herring, and Michael J. Ulsh
JournalJournal of Power Sources
Volume261
Pagination401 - 411
Date Published09/2014
ISSN03787753
Keywordscatalyst layer, defect detection, fuel cells, infrared thermography, layer-thickness, manufacturing, transport
Abstract

As fuel cells become more prominent, new manufacturing and production methods will need to be developed to deal efficiently and effectively with increased demand. One necessary component of this industrial growth is the accurate measurement of the variability in the manufacturing process. In this study, we present a diagnostic system that combines infrared thermography with a reactive-flow-through technique to detect catalyst-loading defects in fuel-cell gas-diffusion electrodes accurately with high spatial and temporal resolutions. Experimental results are compared with model predictions of thermal response with good agreement. Data analysis, operating-condition impacts, and detection limits are explored using both experiments and simulation. Overall, the results demonstrate the potential of this technique to measure defects on the millimeter length scale with temporal resolutions appropriate for use on a web-line. Thus we present the first development stage of a next-generation non-destructive diagnostic tool, which may be amenable to eventual use on roll-to-roll manufacturing lines.

URLhttp://ac.els-cdn.com/S0378775313019848/1-s2.0-S0378775313019848-main.pdf?_tid=b8fba774-25a6-11e4-874b-00000aacb35f&acdnat=1408236052_b740ad5036a7ba2637338353b8ab7782
DOI10.1016/j.jpowsour.2013.11.124
Short TitleJournal of Power Sources
DOI10.1016/j.jpowsour.2013.11.124