High-Performance Lithium-Oxygen Battery Electrolyte Derived from Optimum Combination of Solvent and Lithium Salt.

ABSTRACT: To fabricate a sustainable lithium-oxygen (Li-O₂) battery, it is crucial to identify an optimum electrolyte. Herein, it is found that tetramethylene sulfone (TMS) and lithium nitrate (LiNO₃) form the optimum electrolyte, which greatly reduces the overpotential at charge, exhibits superior oxygen efficiency, and allows stable cycling for 100 cycles. Linear sweep voltammetry (LSV) and differential electrochemical mass spectrometry (DEMS) analyses reveal that neat TMS is stable to oxidative decomposition and exhibit good compatibility with a lithium metal. But, when TMS is combined with typical lithium salts, its performance is far from satisfactory. However, the TMS electrolyte containing LiNO₃ exhibits a very low overpotential, which minimizes the side react

SUBMITTER: Ahn SM 

PROVIDER: S-EPMC5644260 | biostudies-literature | 2017 Oct

REPOSITORIES: biostudies-literature