5 years ago

“Water-in-Salt” electrolyte enabled LiMn2O4/TiS2 Lithium-ion batteries

“Water-in-Salt” electrolyte enabled LiMn2O4/TiS2 Lithium-ion batteries
High electrochemical reversibility of the TiS2 anode in “Water-in-Salt” electrolyte (21m LiTFSI in H2O) is demonstrated for the first time. The wide electrochemical window and low chemical activity of H2O in the “Water-in-Salt” electrolyte not only significantly enhanced the electrochemical reversibility of TiS2 but also effectively suppressed the hydrolysis side reaction in the aqueous electrolyte. Paired with a LiMn2O4 cathode, the LiMn2O4/TiS2 full cell delivers a relatively high discharge voltage of 1.7 V and an energy density of 78Whkg1 as well as a satisfactory rate performance.

Publisher URL: www.sciencedirect.com/science

DOI: S1388248117301996

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