articleJournal of the American Chemical SocietyApr 27, 2011Closed access

Reactions in the Rechargeable Lithium–O 2 Battery with Alkyl Carbonate Electrolytes

SAStefan A. FreunbergerYCYuhui ChenZPZhangquan PengJMJohn M. GriffinLJLaurence J. Hardwick

Toyota Motor Corporation (Belgium) · Paul Scherrer Institute

PubMed
Indexed incrossrefpubmed

Abstract

The nonaqueous rechargeable lithium-O(2) battery containing an alkyl carbonate electrolyte discharges by formation of C(3)H(6)(OCO(2)Li)(2), Li(2)CO(3), HCO(2)Li, CH(3)CO(2)Li, CO(2), and H(2)O at the cathode, due to electrolyte decomposition. Charging involves oxidation of C(3)H(6)(OCO(2)Li)(2), Li(2)CO(3), HCO(2)Li, CH(3)CO(2)Li accompanied by CO(2) and H(2)O 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-O(2) cells. Oxidation of C(3)H(6)(OCO(2)Li)(2) involves terminal carbonate groups leaving behind the OC(3)H(6)O moiety that reacts to form a thick gel on the Li anode.…

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Topics & keywords

Topics
Keywords
  • Electrolyte
  • Chemistry
  • Anode
  • Cathode
  • Battery (electricity)
  • Carbonate
  • Lithium (medication)
  • Alkyl
UN Sustainable Development Goals
  • Clean water and sanitation
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