English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
  Nanostructured WCx/CNTs as highly efficient support of electrocatalysts with low Pt loading for oxygen reduction reaction

Liang, C., Ding, L., Li, C., Pang, M., Su, D. S., Li, W., et al. (2010). Nanostructured WCx/CNTs as highly efficient support of electrocatalysts with low Pt loading for oxygen reduction reaction. Energy and Environmental Science, 3(8), 1121-1127. doi:10.1039/c001423k.

Item is

Files

show Files
hide Files
:
2010-06-08.pdf (Any fulltext), 372KB
 
File Permalink:
-
Name:
2010-06-08.pdf
Description:
-
Visibility:
Restricted ( Max Planck Society (every institute); )
MIME-Type / Checksum:
application/pdf
Technical Metadata:
Copyright Date:
2010
Copyright Info:
RSC
License:
-

Locators

show

Creators

show
hide
 Creators:
Liang, Changhai1, Author
Ding, Ling1, Author
Li, Chuang1, Author
Pang, Min1, Author
Su, Dang Sheng2, Author              
Li, Wenzhen3, Author
Wang, Yuemin4, Author
Affiliations:
1State Key Laboratory of Fine Chemicals and Key Laboratory for Micro/Nano Technology and System of Liaoning Province, Dalian University of Technology, China, ou_persistent22              
2Inorganic Chemistry, Fritz Haber Institute, Max Planck Society, ou_24023              
3Department of Chemical Engineering, Michigan Technological University, USA, ou_persistent22              
4Physical Chemistry I, Ruhr-University Bochum, Germany, ou_persistent22              

Content

show
hide
Free keywords: CNTs; fuel cells; storage of liquid methanol carbon
 Abstract: Highly active Pt–WCx/carbon nanotube (CNT) electrocatalysts for the oxygen reduction reaction (ORR) have been developed by the combination of tungsten carbide with CNTs as electrocatalyst supports. The obtained WCx/CNT and Pt–WCx/CNT samples were characterized by XRD, TEM, XPS and electrochemical measurements. The results showed that nanostructured tungsten carbide particles on carbon nanotubes could be prepared by microwave-assisted thermolytic molecular precursor method, and the particle size of tungsten carbide increased with the increase of tungsten loading. The nanostructured WCx/CNTs showed electrocatalytic activity for oxygen reduction reaction. The deposition of Pt nanoparticles on the WCx/CNTs resulted in higher electrocatalytic activity for the oxygen reduction reaction and better immunity to methanol than Pt/CNT catalysts. The unique electrocatalytic properties of the novel Pt–WCx/CNT electrocatalyst were attributed to a synergistic effect between Pt, WCx and the CNTs. The findings also indicated that WCx/CNTs were efficient electrocatalyst supports that could reduce Pt usage while the same electrocatalytic properties were kept for the ORR in direct methanol fuel cells.CO, the MoOxCy carburization to Mo2C, and further carburization of Mo2C to Mo3C2. The Pt−Mo2C/CNTs sample gave higher electrochemical surface area and activity for oxygen reduction reaction with a more positive onset potential in acid solution than those of Pt/CNTs under the same condition, which was attributed to the synergistic effect among Pt, Mo2C, and CNTs. The findings indicate that Mo2C is an inexpensive and promising alternative to precious metal and worthy of further exploring for other applications in catalysis.

Details

show
hide
Language(s): eng - English
 Dates: 2010-06
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: eDoc: 493412
DOI: 10.1039/c001423k
 Degree: -

Event

show

Legal Case

show

Project information

show

Source 1

show
hide
Title: Energy and Environmental Science
  Alternative Title : Energy Environ. Sci.
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: -
Pages: - Volume / Issue: 3 (8) Sequence Number: - Start / End Page: 1121 - 1127 Identifier: -