Ni-based amorphous alloys with surface modification by carbon ion implantation are proposed as an alternative bipolar plate material for polymer electrolyte membrane fuel cells (PEMFCs). Both Ni60Nb 20Ti10Zr10 alloys with and without carbon ion implantation have corrosion resistance as good as graphite as well as much lower contact resistance than 316L stainless steel in the PEMFC environment. The formation of conductive surface carbide due to carbon ion implantation results in a decrease in the contact resistance to a level comparable to that of graphite. This combination of excellent properties indicates that carbon ion implanted Ni-based amorphous alloys can be potential candidate materials for bipolar plates in PEMFCs.
Bibliographical noteFunding Information:
This research was supported by a grant (2008-K019-00) from the Energy and Resource Recycling R&D Program and the "2009 Scientist & Engineers Exchange Program" supported by the Ministry of Knowledge Economy of the Republic of Korea. EF and SHH acknowledge the financial support by a grant (code#: 2010K000265) and (code#: 2010K000292) from the Center for Nanostructured Materials Technology under 21st Century Frontier R&D programs of the Korean Ministry of Science and Technology. PRC also acknowledges the support by the 2009 research fund of Kookmin University.
All Science Journal Classification (ASJC) codes
- Condensed Matter Physics
- Mechanics of Materials
- Metals and Alloys
- Materials Chemistry