BROWSE

Related Researcher

Author's Photo

Kim, Guntae
gunslab
Research Interests
  • Solid Oxide Fuel Cells (SOFCs)& SOE, PEMFC, metal-air batteries, Metal-CO2 system, Catalyst for DRM

ITEM VIEW & DOWNLOAD

Antimony-doped graphene nanoplatelets

Cited 0 times inthomson ciCited 0 times inthomson ci
Title
Antimony-doped graphene nanoplatelets
Author
Jeon, In-YupChoi, MinChoi, Hyun-JungJung, Sun-MinKim, Min-JungSeo, Jeong-MinBae, Seo-YoonYoo, SeonyoungKim, GuntaeJeong, Hu YoungPark, NoejungBaek, Jong-Beom
Issue Date
2015-05
Publisher
NATURE PUBLISHING GROUP
Citation
NATURE COMMUNICATIONS, v.6, pp.7123
Abstract
Heteroatom doping into the graphitic frameworks have been intensively studied for the development of metal-free electrocatalysts. However, the choice of heteroatoms is limited to non-metallic elements and heteroatom-doped graphitic materials do not satisfy commercial demands in terms of cost and stability. Here we realize doping semimetal antimony (Sb) at the edges of graphene nanoplatelets (GnPs) via a simple mechanochemical reaction between pristine graphite and solid Sb. The covalent bonding of the metalloid Sb with the graphitic carbon is visualized using atomic-resolution transmission electron microscopy. The Sb-doped GnPs display zero loss of electrocatalytic activity for oxygen reduction reaction even after 100,000 cycles. Density functional theory calculations indicate that the multiple oxidation states (Sb3+ and Sb5+) of Sb are responsible for the unusual electrochemical stability. Sb-doped GnPs may provide new insights and practical methods for designing stable carbon-based electrocatalysts
URI
https://scholarworks.unist.ac.kr/handle/201301/11681
URL
http://www.nature.com/ncomms/2015/150522/ncomms8123/full/ncomms8123.html
DOI
10.1038/ncomms8123
ISSN
2041-1723
Appears in Collections:
PHY_Journal Papers
ECHE_Journal Papers
SE_Journal Papers
Files in This Item:
ncomms8123.pdf Download

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

Show full item record

qrcode

  • mendeley

    citeulike

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

MENU