Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5146940 | International Journal of Hydrogen Energy | 2017 | 9 Pages |
Abstract
In an attempt to improve the electrocatalytic performance of non-precious metal CoDETA/C catalyst for the oxygen reduction reaction (ORR) both in acid and alkaline media, herein, four types of post-treatment, including acid leaching and its re-pyrolysis, alkaline leaching and its re-pyrolysis are investigated. XRD indicates that there is a dissolution of nanometal Co after leaching in acid electrolyte and the formation of Co(OH)2 in alkaline electrolyte. Raman shows that the degree of defect decreases after post-treatment. Electrochemical results display that post-treatment of leaching and its re-pyrolysis have a positive influence on the ORR electrocatalytic activity of CoDETA/C catalyst both in acid and alkaline electrolytes. In special, acid leaching and acid leaching combined with re-pyrolysis is a wise way to increase the electrocatalytic performance of CoDETA/C catalyst in acid and alkaline electrolyte, respectively. Application of leaching and its re-pyrolysis is thus revealed to be useful for improving the ORR electrocatalytic performance of CoDETA/C catalyst.
Related Topics
Physical Sciences and Engineering
Chemistry
Electrochemistry
Authors
Hui-Juan Zhang, Xu Zhang, Haoliang Li, Weimin Zhang, Zi-Feng Ma, Junhe Yang,