BROWSE

Related Researcher

Author

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

ITEM VIEW & DOWNLOAD

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

Cited 25 times inthomson ciCited 13 times inthomson ci
Title
Ordered mesoporous porphyrinic carbons with very high electrocatalytic activity for the oxygen reduction reaction
Author
Cheon, Jae YeongKim, TaeyoungChoi, YongManJeong, Hu YoungKim, Min GyuSa, Young JinKim, JaesikLee, ZonghoonYang, Tae-HyunKwon, KyungjungTerasaki, OsamuPark, Gu-GonAdzic, Radoslav R.Joo, Sang Hoon
Keywords
Electrocatalysis; Fuel cells
Issue Date
201309
Publisher
NATURE PUBLISHING GROUP
Citation
SCIENTIFIC REPORTS, v.3, no., pp.1 - 8
Abstract
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 0.9a�...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.
URI
Go to Link
DOI
http://dx.doi.org/10.1038/srep02715
ISSN
2045-2322
Appears in Collections:
UCRF_Journal Papers
MSE_Journal Papers
ECHE_Journal Papers
Files in This Item:
000324694200001.pdfDownload

find_unist can give you direct access to the published full text of this article. (UNISTARs only)

Show full item record

qr_code

  • mendeley

    citeulike

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

MENU