BROWSE

Related Researcher

Author's Photo

Kim, Youngsik
YK Research
Research Interests
  • Ionic conducting ceramic electrolyte membranes, energy conversion and storage materials and devices

ITEM VIEW & DOWNLOAD

Perovskite Sr0.95Ce0.05CoO3-delta loaded with copper nanoparticles as a bifunctional catalyst for lithium-air batteries

Cited 36 times inthomson ciCited 23 times inthomson ci
Title
Perovskite Sr0.95Ce0.05CoO3-delta loaded with copper nanoparticles as a bifunctional catalyst for lithium-air batteries
Author
Yang, WeiSalim, JasonLi, ShuaiSun, ChunwenChen, LiquanGoodenough, John B.Kim, Youngsik
Keywords
Bi-functional catalysts; Brownmillerites; Copper nanoparticles; Current rate; Lithium-air battery; Oxygen reductions; PEM fuel cell; Vulcan XC72; XPS measurements; XRD analysis
Issue Date
2012
Publisher
ROYAL SOC CHEMISTRY
Citation
JOURNAL OF MATERIALS CHEMISTRY, v.22, no.36, pp.18902 - 18907
Abstract
Sr 0.95Ce 0.05CoO 3-δ (SCCO) particles loaded with copper nanoparticles on their surface are shown to be excellent, low-cost, and stable bifunctional catalysts for the oxygen-reduction and oxygen-evolution reactions (ORR and OER) in aqueous solution. Evidence for the presence of Ce 3+ and Co 2+ as well as Co 4+ and Co 3+ ions revealed by XPS measurements as well as XRD analysis indicates that a CeCoO 2.5 brownmillerite phase may be extruded to the surface. A surface Co 4+/Co 3+ couple is known to be a good OER catalyst. The performance of the SCCO-based catalysts is better at higher current rates (>0.1 mA cm -2) than that of Vulcan XC-72 and even close to that of the 50% Pt/carbon-black catalyst. This catalyst could be used in a metal/air battery or a PEM fuel cell as an efficient and stable bifunctional catalyst.
URI
Go to Link
DOI
10.1039/c2jm33440b
ISSN
0959-9428
Appears in Collections:
ECHE_Journal Papers
Files in This Item:
2-s2.0-84865209364.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