Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8073981 | Energy | 2016 | 5 Pages |
Abstract
In this study, synchrotron X-ray imaging is used to investigate the water transport inside newly developed GDM (gas diffusion medium) in polymer electrolyte membrane fuel cells. Two different measurement techniques, namely in-situ radiography and quasi-in-situ tomography were combined to reveal the relationship between the structure of the MPL (microporous layer), the operation temperature and the water flow. The newly developed MPL is equipped with randomly arranged holes. It was found that these holes strongly influence the overall water transport in the whole adjacent GDM. The holes act as nuclei for water transport paths through the GDM. In the future, such tailored GDMs could be used to optimize the efficiency and operating conditions of polymer electrolyte membrane fuel cells.
Keywords
Related Topics
Physical Sciences and Engineering
Energy
Energy (General)
Authors
Saad S. Alrwashdeh, Henning Markötter, Jan HauÃmann, Tobias Arlt, Merle Klages, Joachim Scholta, John Banhart, Ingo Manke,