Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5147273 | International Journal of Hydrogen Energy | 2016 | 6 Pages |
Abstract
This work presents the oxygen reduction reaction (ORR) activity of three different plasma-synthesized cobalt oxides supported on carbon (CoOx/C) in 0.1Â M KOH and 0.1Â MÂ K2CO3 at 323 and 348Â K. To evaluate the stability of the catalyst material, cyclic voltammograms (CVs) were recorded. To investigate the catalytic activity, a high-temperature rotating ring-disk electrode (RRDE) was used. Cobalt based catalyst materials seem to be a good alternative to costly platinum-based catalysts. This work shows the temperature dependent catalytic activity of plasma-treated cobalt acetate precursor material. This work showed that the increase of temperature to 323Â K resulted in an increase in activity for ORR for the three catalyst materials, but a further temperature increase up to 348Â K leads to a decrease in activity.
Related Topics
Physical Sciences and Engineering
Chemistry
Electrochemistry
Authors
Lisa M. Uhlig, Douglas Stewart, Gustav Sievers, Volker Brüser, Alexander Dyck, Gunther Wittstock,