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- Title
Catalytic Disproportionation of the Superoxide Intermediate from Electrochemical O<sub>2</sub> Reduction in Nonaqueous Electrolytes.
- Authors
Zheng, Dong; Wang, Qiang; Lee, Hung‐Sui; Yang, Xiao‐Qing; Qu, Deyang
- Abstract
Tris(pentafluorophenyl)borane (TPFPB) was found to be an efficient catalyst for rapid superoxide (O2−) disproportionation. The kinetics for the catalytic disproportionation reaction is much faster than the reaction between O2− and propylene carbonate. Therefore, the negative impact of the reaction between the electrolyte and O2− produced by the O2 reduction is minimized. The cathodic current for O2 reduction can be doubled in the presence of TPFPB. The high reduction current resulted from the pseudo two-electron O2-reduction reaction due to the replenishment of O2 at the electrode surface. This discovery could lead to a new avenue for the development of high-capacity, high-rate, rechargeable Li-air batteries.
- Subjects
SUPEROXIDES; CATALYSIS; NONAQUEOUS electrolytes; ELECTROCHEMISTRY; PEROXIDES
- Publication
Chemistry - A European Journal, 2013, Vol 19, Issue 26, p8679
- ISSN
0947-6539
- Publication type
Article
- DOI
10.1002/chem.201204506