Journal
JOURNAL OF POWER SOURCES
Volume 278, Issue -, Pages 296-307Publisher
ELSEVIER
DOI: 10.1016/j.jpowsour.2014.12.080
Keywords
Oxygen reduction reaction; Multi walled carbon nanotubes; Cobalt; Nitrogen; Rotating disk electrode; Gas diffusion electrode
Funding
- European Community's Seventh Framework Programme (FP7) for the Fuel Cells and Hydrogen Joint Technology Initiative [278054]
Ask authors/readers for more resources
Two catalysts are synthesized by wet impregnation of multi walled carbon nanotubes (MWCNT) with a complex formed between Co(II) ions and the nitrogen-containing molecule 2,4,6-tris(2-pyridyl)-1,3,5-triazine (TPTZ), followed by one or two identical heat treatments in N-2 atmosphere at 800 degrees C for 3 h. Catalysts are fully characterized by FESEM, EDX, BET, XRD, FTIR, TGA, XPS analyses, and electrochemical techniques. The electrocatalytic activity towards oxygen reduction reaction (ORR) of the catalysts in acid conditions is assessed by means of a rotating disk electrode (RDE) apparatus and a specific type of cell equipped with a gas diffusion working electrode (GDE). In both testing approaches, the catalyst heattreated twice (Co-N/MWCNT-2) exhibits higher electroactivity than the catalyst heat-treated once (Co-N/MWCNT-1). Chronoamperometries both in RDE and GDE cell are also performed, showing less electroactivity decay and better current performance for the catalyst heat-treated twice. (C) 2014 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available