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Journal Article

Coupling Effect Between Cobalt Oxides And Carbon For Oxygen Reduction Reaction

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http://pubman.mpdl.mpg.de/cone/persons/resource/persons22148

Su,  Dang Sheng
Shenyang National Laboratory for Materials Science Institute of Metal Research, Chinese Academy of Science;
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;

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Citation

Liu, J., Jiang, L., Tang, Q., Zhang, B. S., Su, D. S., Wang, S., et al. (2012). Coupling Effect Between Cobalt Oxides And Carbon For Oxygen Reduction Reaction. ChemSusChem: chemistry & sustainability, energy & materials, 5(12), 2315-2318. doi:10.1002/cssc.201200563.


Cite as: http://hdl.handle.net/11858/00-001M-0000-000E-AFEC-D
Abstract
Same selectivity hides different pathways: The same apparent 4-electron process for the oxygen-reduction-reaction hides different pathways over carbon-supported cobalt oxide catalysts depending on the potential. At low overpotentials, the ORR intermediate HO2− preferably disproportionates to oxygen, whereas at high overpotentials the disproportionation and reduction reaction occur in parallel.