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Author

Jeong, Hu Young
UNIST Central Research Facilities (UCRF)
Research Interests
  • Soft material characterization such as graphene using a low kV Cs-corrected TEM

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Transition Metal Ion-Chelating Ordered Mesoporous Carbons as Noble Metal-Free Fuel Cell Catalysts

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Title
Transition Metal Ion-Chelating Ordered Mesoporous Carbons as Noble Metal-Free Fuel Cell Catalysts
Author
Dombrovskis, Johanna K.Jeong, Hu Y.Fossum, KjellTerasaki, OsamuPalmqvist, Anders E. C.
Keywords
Fuel cell catalysts; Fuel cell tests; High power density; High specific surface area; Membrane electrode assemblies; Ordered mesoporous carbon; Polymer electrolyte membranes; X-ray absorption fine structure analysis
Issue Date
201303
Publisher
AMER CHEMICAL SOC
Citation
CHEMISTRY OF MATERIALS, v.25, no.6, pp.856 - 861
Abstract
A new concept for noble metal-free polymer electrolyte membrane fuel cell catalysts has been developed. The catalysts consist of chelated transition metal ions incorporated in a nitrogen-functionalized ordered mesoporous carbon matrix, which is evidenced by a combination of X-ray absorption fine structure analysis and high-resolution transmission electron microscopy. The ordered mesoporous carbon matrix of the catalyst offers an exceptionally high specific surface area and allows conceptually for a high degree of tuning, enabling controlled variability of, e.g., pore size and curvature and thickness of the pore walls of the catalysts. Single cell fuel cell tests of membrane electrode assemblies prepared with a cathode made of iron- or cobalt-based versions of the catalyst show high power densities, reaching up to one-third of a commercial Pt/C catalyst at 0.6 V.
URI
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DOI
http://dx.doi.org/10.1021/cm303357p
ISSN
0897-4756
Appears in Collections:
UCRF_Journal Papers

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