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Title: Kinetic investigation of catalytic disproportionation of superoxide ions in the non-aqueous electrolyte used in Li–air batteries

Journal Article · · Journal of Power Sources
 [1];  [1];  [1];  [2];  [1]
  1. Univ. of Massachusetts Boston, Boston, MA (United States)
  2. Brookhaven National Lab. (BNL), Upton, NY (United States)

Superoxide reacts with carbonate solvents in Li–air batteries. Tris(pentafluorophenyl)borane is found to catalyze a more rapid superoxide (O2-) disproportionation reaction than the reaction between superoxide and propylene carbonate (PC). With this catalysis, the negative impact of the reaction between the electrolyte and O2-produced by the O2 reduction can be minimized. A simple kinetic study using ESR spectroscopy was reported to determine reaction orders and rate constants for the reaction between PC and superoxide, and the disproportionation of superoxide catalyzed by Tris(pentafluorophenyl)borane and Li ions. As a result, the reactions are found to be first order and the rate constants are 0.033 s-1 M-1, 0.020 s-1 M-1and 0.67 s-1M-1 for reactions with PC, Li ion and Tris(pentafluorophenyl)borane, respectively.

Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE)
Grant/Contract Number:
SC00112704; DEAC02-98CH10886
OSTI ID:
1177851
Alternate ID(s):
OSTI ID: 1778389
Report Number(s):
BNL-107735-2015-JA; R&D Project: MA453MAEA; VT1201000
Journal Information:
Journal of Power Sources, Vol. 274, Issue C; ISSN 0378-7753
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 18 works
Citation information provided by
Web of Science

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Cited By (4)

Mn-doped La 0.6 Sr 0.4 CoO 3 perovskite catalysts with enhanced performances for non-aqueous electrolyte Li–O 2 batteries journal January 2016
A novel acid catalyst based on super/subcritical CO 2 -enriched water for the efficient esterification of rosin journal July 2018
Recent Advances in Non-Aqueous Electrolyte for Rechargeable Li-O 2 Batteries journal June 2016
Redox mediators: a shuttle to efficacy in metal–O 2 batteries journal January 2019