Transition Metal Ion-Chelating Ordered Mesoporous Carbons as Noble Metal-Free Fuel Cell Catalysts
Artikel i vetenskaplig tidskrift, 2013

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.

Författare

Johanna Dombrovskis

Chalmers, Kemi- och bioteknik, Teknisk ytkemi

H. Y. Jeong

Ulsan National Institute of Science and Technology

Kjell Fossum

Chalmers, Kemi- och bioteknik, Teknisk ytkemi

O. Terasaki

Korea Advanced Institute of Science and Technology

Anders Palmqvist

Chalmers, Kemi- och bioteknik, Teknisk ytkemi

Chemistry of Materials

0897-4756 (ISSN) 1520-5002 (eISSN)

Vol. 25 856-861

Ämneskategorier

Kemi

DOI

10.1021/cm303357p