Preparation and catalytic activity for oxygen reduction reaction of tungsten nitirde-tungsten/nitrogen doped ordered mesoporous carbon

Hu Guo, Ling Hui Li, Tao Wang, Xiao Li Fan, Li Song, Hao Gong, Wei Xia, Cheng Jiang, Bin Gao, Jian Ping He

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

Tungsten nitride-Tungsten/nitrogen doped ordered mesoporous carbon (WN/W-NOMC), as a non-precious-metal cathode catalyst for oxygen reduction reaction (ORR), was successfully synthesized through a soft-template method. The amount of nitrogen was adjusted by urea, and when the content of nitrogen was 7% (w/w), the obtained composite had highly ordered mesoporous structure, and its specific surface area reached to 835 m2-g-1. Transmission electron microscope (TEM) shows that the catalytic particles were uniform supported on NOMC. ORR test was conducted in O2-staturated 0.1 mol-L-1 KOH solution, the oneset potential is 0.87 V (vs RHE) and the limiting current density is 4.49 mA-cm"2. The transfer number of electron was 3.4, which was close to commercial 20%(w/w) Pt/C (3.8), indicated that WN-NOMC exhibited an approximate 4e- transfer pathway during the ORR process. Though the catalytic activity is less than Pt C, the excellent methanol tolerance and long-time electrochemical stability make WN-W/NOMC to be a potential electrode catalyst for ORR.

Original languageEnglish
Article number1001-4861(2019)11-2032-09
Pages (from-to)2032-2040
Number of pages9
JournalChinese Journal of Inorganic Chemistry
Volume34
Issue number11
DOIs
StatePublished - 2018
Externally publishedYes

Keywords

  • Electrocatalysis
  • Fuel cells
  • Ordered mesoporous carbon
  • Oxygen reduction reaction
  • Tungsten nitride

Fingerprint

Dive into the research topics of 'Preparation and catalytic activity for oxygen reduction reaction of tungsten nitirde-tungsten/nitrogen doped ordered mesoporous carbon'. Together they form a unique fingerprint.

Cite this