Ordered mesoporous porphyrinic carbons with very high electrocatalytic activity for the oxygen reduction reaction

Cited 279 time in webofscience Cited 0 time in scopus
  • Hit : 380
  • Download : 588
The high cost of the platinum-based cathode catalysts for the oxygen reduction reaction (ORR) has impeded the widespread application of polymer electrolyte fuel cells. We report on a new family of non-precious metal catalysts based on ordered mesoporous porphyrinic carbons (M-OMPC; M = Fe, Co, or FeCo) with high surface areas and tunable pore structures, which were prepared by nanocasting mesoporous silica templates with metalloporphyrin precursors. The FeCo-OMPC catalyst exhibited an excellent ORR activity in an acidic medium, higher than other non-precious metal catalysts. It showed higher kinetic current at 0.9 V than Pt/C catalysts, as well as superior long-term durability and MeOH-tolerance. Density functional theory calculations in combination with extended X-ray absorption fine structure analysis revealed a weakening of the interaction between oxygen atom and FeCo-OMPC compared to Pt/C. This effect and high surface area of FeCo-OMPC appear responsible for its significantly high ORR activity.
Publisher
NATURE PUBLISHING GROUP
Issue Date
2013-09
Language
English
Article Type
Article
Keywords

MEMBRANE FUEL-CELLS; METAL-CATALYSTS; NONPLATINUM CATALYSTS; CATHODE CATALYST; PLATINUM; IRON; ELECTROREDUCTION; POLYANILINE; CHALLENGES; MONOLAYER

Citation

SCIENTIFIC REPORTS, v.3

ISSN
2045-2322
DOI
10.1038/srep02715
URI
http://hdl.handle.net/10203/223386
Appears in Collection
Files in This Item
000324694200001.pdf(1.01 MB)Download
This item is cited by other documents in WoS
⊙ Detail Information in WoSⓡ Click to see webofscience_button
⊙ Cited 279 items in WoS Click to see citing articles in records_button

qr_code

  • mendeley

    citeulike


rss_1.0 rss_2.0 atom_1.0