NDLI: Non-metal catalysts for oxygen reduction reaction in PEM fuel cells

Content Provider	Semantic Scholar
Author	Matter, Paul H. Millet, J. M. M. Ozkan, Umit S.
Copyright Year	2006
Abstract	Active catalysts for the oxygen reduction reaction in acidic media were prepared by the pyrolysis of acetonitrile at 900 o C over supported Fe particles. Both Vulcan Carbon (VC) and alumina were used as supports for the metal. Carbon nanofibers formed in both samples, although they were of different nano- structures. The fibers could be purified from the alumina sample by washing with HF acid to dissolve the support. The resulting purified fibers were more active but less conductive than the Fe / VC sample. Activity and selectivity were measured with a rotating ring-disk electrode set-up using 0.5 M H2SO4 as the electrolyte. The Fe phases present in the post-treated samples were characterized with Mossbauer spectroscopy and electron microscopy. The Fe likely improves activity by catalyzing more active nanostructures and is not part of an active site for the reduction of oxygen.
File Format	PDF HTM / HTML
Alternate Webpage(s)	https://www.cder.dz/A2H2/Medias/Download/Proc%20PDF/PARALLEL%20SESSIONS/%5BS18%5D%20PEM%20Fuel%20Cell/13-06-06/669.pdf
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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