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Coupling Effect Between Cobalt Oxides And Carbon For Oxygen Reduction Reaction
Author(s) -
Liu Jing,
Jiang Luhua,
Tang Qiwen,
Zhang Bingsen,
Su Dang Sheng,
Wang Suli,
Sun Gongquan
Publication year - 2012
Publication title -
chemsuschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.412
H-Index - 157
eISSN - 1864-564X
pISSN - 1864-5631
DOI - 10.1002/cssc.201200563
Subject(s) - disproportionation , cobalt , catalysis , oxygen , chemistry , carbon fibers , oxygen reduction reaction , inorganic chemistry , selectivity , photochemistry , oxide , cobalt oxide , materials science , electrochemistry , electrode , organic chemistry , composite number , composite material
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 HO 2 − preferably disproportionates to oxygen, whereas at high overpotentials the disproportionation and reduction reaction occur in parallel.