Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5146799 | International Journal of Hydrogen Energy | 2017 | 8 Pages |
Abstract
Transition metals have attracted particular research interest for sustainable ORR electrocatalysis but zero-valent ones have been often ignored. In this work metallic cobalt nanoparticle decorated graphene aerogel (CoNPs/rGO aerogel) was synthesized via a facile hydrothermal reaction, followed by thermal annealing in reducing H2 atmosphere. As-prepared CoNPs/rGO aerogel demonstrates commercial Pt/C-comparable ORR activity through a predominant four-electron pathway, as well as excellent durability and methanol tolerance superior to Pt/C in alkaline medium. This work suggests that metallic cobalt nanoparticle is highly efficient to boost the ORR activity of neighboring carbon besides various cobalt compounds.
Related Topics
Physical Sciences and Engineering
Chemistry
Electrochemistry
Authors
Xiangqian Liu, Yanan Yu, Yanli Niu, Shujuan Bao, Weihua Hu,