Journal
SCIENCE CHINA-CHEMISTRY
Volume 58, Issue 1, Pages 180-186Publisher
SCIENCE PRESS
DOI: 10.1007/s11426-014-5279-4
Keywords
cobalt oxide nanocrystals; fuel cells; non-precious electrocatalysts; nitrogen doped carbon nanocages; oxygen reduction reaction
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Funding
- National Natural Science Foundation of China [51232003, 21473089, 21373108, 21173115]
- National Basic Research Program of China [2013CB932902]
- Jiangsu Province Science and Technology Support Project [BE2012159]
- Suzhou Science and Technology Plan projects [ZXG2013025]
- National Science Fund for Talent Training in Basic Science [J1103310]
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Taking advantage of the nitrogen (N)-participation and large surface area of N-doped carbon nanocages (NCNCs), the CoO (x) nanocrystals are conveniently immobilized onto the NCNCs with high dispersion. The CoO (x) /NCNCs hybrid exists in the mixed valence with predominant CoO over Co3O4 and demonstrates superb oxygen reduction reaction activity and stability remaining similar to 94% current density even after operation over 100 h. These results suggest a promising strategy to develop advanced electrocatalysts with the novel NCNCs or even beyond.
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