Reactions in the Rechargeable Lithium–O2 Battery with Alkyl Carbonate Electrolytes
Top Cited Papers
- 27 April 2011
- journal article
- research article
- Published by American Chemical Society (ACS) in Journal of the American Chemical Society
- Vol. 133 (20), 8040-8047
- https://doi.org/10.1021/ja2021747
Abstract
The nonaqueous rechargeable lithium–O2 battery containing an alkyl carbonate electrolyte discharges by formation of C3H6(OCO2Li)2, Li2CO3, HCO2Li, CH3CO2Li, CO2, and H2O at the cathode, due to electrolyte decomposition. Charging involves oxidation of C3H6(OCO2Li)2, Li2CO3, HCO2Li, CH3CO2Li accompanied by CO2 and H2O evolution. Mechanisms are proposed for the reactions on discharge and charge. The different pathways for discharge and charge are consistent with the widely observed voltage gap in Li–O2 cells. Oxidation of C3H6(OCO2Li)2 involves terminal carbonate groups leaving behind the OC3H6O moiety that reacts to form a thick gel on the Li anode. Li2CO3, HCO2Li, CH3CO2Li, and C3H6(OCO2Li)2 accumulate in the cathode on cycling correlating with capacity fading and cell failure. The latter is compounded by continuous consumption of the electrolyte on each discharge.Keywords
This publication has 50 references indexed in Scilit:
- Protected anodes for lithium-air batteriesSolid State Ionics, 2011
- A review of the features and analyses of the solid electrolyte interphase in Li-ion batteriesElectrochimica Acta, 2010
- Some Possible Approaches for Improving the Energy Density of Li-Air BatteriesJournal of the Electrochemical Society, 2010
- Electrochemical studies on epoxidised natural rubber-based gel polymer electrolytes for lithium–air cellsJournal of Power Sources, 2008
- Acetone as oxidative decomposition product in propylene carbonate containing battery electrolyteElectrochemistry Communications, 2005
- Formation of reactive intermediates [ROOOOR] from the addition of superoxide ion (O2.bul.-) to carbon tetrachloride, trichlorotrifluoromethane, trichloromethylbenzene, benzoyl chloride, n-butyl bromide, and n-butyl chloride in acetonitrileChemical Research in Toxicology, 1988
- Gas-phase ion-molecule reactions of dioxygen anion radical (O2-.bul.)Journal of the American Chemical Society, 1985
- Proton-induced disproportionation of superoxide ion in aprotic mediaJournal of the American Chemical Society, 1982
- Reactivity of superoxide ion with carbonyl compounds in aprotic solventsJournal of the American Chemical Society, 1979
- Cleavage of esters by superoxideThe Journal of Organic Chemistry, 1976