Abstract
A reforming pack chromization with rolling pretreatment process is utilized to develop inexpensive and high-performance Fe-based metal bipolar plates (SS 420, SS 430, and SS 316 stainless steels) for PEMFC systems. Rolling process is previously performed to reduce the chromizing temperature and generate a coating possessing excellent conductivity and corrosion resistance on the steels during chromization. The power efficiencies of rolled-chromized and simple chromized bipolar plates are compared with graphite bipolar plates employed in PEMFCs. The results show that the rolled-chromized bipolar plates have a corrosion current (Icorr) of 7.87 × 10-8 A cm-2 and an interfacial contact resistance of 9.7 mΩ cm2. Moreover, the power density of the single cell assembled with rolled-chromized bipolar plates is 0.46 W cm-2, which is very close to that of graphite (0.50 W cm-2), in the tested conditions of this study.
Original language | English |
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Pages (from-to) | 5686-5691 |
Number of pages | 6 |
Journal | Journal of Power Sources |
Volume | 195 |
Issue number | 17 |
DOIs | |
Publication status | Published - Sep 1 2010 |
Keywords
- Bipolar plates
- Fe-based alloys
- Low-temperature pack chromization
- Rolling
ASJC Scopus subject areas
- Physical and Theoretical Chemistry
- Energy Engineering and Power Technology
- Renewable Energy, Sustainability and the Environment
- Electrical and Electronic Engineering